- 余辉
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现在完成时,由助动词ter的直陈式现在时变位加上主动词的过去分词构成,它可以表示在过去发生,并延续到现在的动作,常常和a partir de、desde、ultimamente等词或者词组连用。
现在完成时
http://baike.baidu.com/view/191047.htm2023-08-04 14:13:5412
现完时态的构成是什么?
现在完成时态是由“have/has+过去分词”构成。主要有两个含义:1、表示动作发生在过去,但与现在的情况有联系,有时无时间状语,有时和一些表示不确定的过去时间状语连用,如:many times,just,yet,ever,never等连用。2、表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作,用于延续性动词,且句中常带有表示一段时间的时间状语,如:for two months, so far等。现在完成时的标志词是:already、yet、just、never、ever、before、since1、already adv.早已,已经;先前;用在肯定句中(be动词、助动词、情态动词之后,实意动词之前)常与yet进行转换。例如:I have already finished the work.翻译:我已经完成这项工作了。改为否定句:I haven"t finished the work yet.翻译:我还没有完成这项工作。二、yet adv.还;但是;已经;又,再放在否定句和一般疑问句句末。例句:1、I didn"t receive a letter from him yet.翻译:我还没有收到过他的信。2、Have you eaten yet?翻译:你吃饭了吗?三、just只用于陈述句,意思是:刚才,放在have和has的后面。例句:I have just receivde a letter .翻译:我刚收到一份信。以上内容参考:百度百科-现在完成时态2023-08-04 14:14:221
现在完成时态
现在完成时1.现在完成时表示到现在为止已完成或仍在持续的动作、状态;强调对现在的影响、联系,或表示经历、经验即用过去发生的动作来说明现在的情况。2.现在完成时的形式是have(has)+过去分词。3.现在完成时是用过去发生,到现在已完成或刚完成的动作来说明现在的情况,或说明到目前为止所完成的动作。 I have opened the door. 我已打开门了。 表示门现在是开着的。 He has come back from town. 他已经从城里回来了。 表示人现在此处。4.现在完成时用在过去已完成而其结果对现在仍有影响的动作来说明经历、经验,或表示某种感情色彩。 Mr. Lee speaks good English. He has learned English for ten years. 李先生说一口好英语,他学了十年英语了。 表示经历、经验。 What have you done! 你做的什么事啊! 表示对所做的事表示不满。5.在表示时间或条件的状语从句中用现在完成时表示未来完成的动作。 You may go swimming if you have done your homework before nine o"clock. 如果你在九点以前做完功课,你可以去游泳。6.当现在完成时表示从过去某时持续到现在的动作或状态,以说明经历、经验,与for或since引导的表示一段时间的副词短语连用时,谓语动词要用be, keep, learn, live, read, serve, stay, study, teach, watch, work, write等表示持续的动词,不可使用arrive, become, begin, borrow, buy, come, close, die, end, enter, get, go, hear, graduate, join, leave, lend, lose, marry, open, put, reach, receive, return, see, shut, start, stop等表示终止的动词。 中文:他到这里三天了。 (误)He has arrived here for three days. (正)He has been here for three days.7.终止动词的否定式可与for或since引导的表示一段时间的副词短语或状语从句连用。 I haven"t seen her for five years. 我五年没见到她了。8.与ever, never,just, always等表示不确定的时间副词连用时,可用现在完成时也可用一般过去时。 中文:你听说过这样一个人吗? Have you ever heard of such a man? 本句为现在完成时。 Did you ever hear of such a man? 本句为一般过去时。9.have(has) been to与have(has) gone to的比较。 Have you been to Hong Kong? 你去过香港吗? 现在已不在香港。 He has gone to Hong Kong. 他已去香港了。 他现在已不在本地。参考资料:http://www.typefree.com/Grammar2006/data/gram/gram106.htm2023-08-04 14:14:381
现在完成时的概念,希望能讲得通俗一点,谢谢!
现在完成时的概念,希望能讲得通俗一点,谢谢! 现在完成时(结构:have+过去分词) (1) 现在完成时表示从过去持续到现在的动作或状态 现在完成时的这种用法通常与由since或for引导的时间状语连用。如: The old man have lived here for more than enty years. 老人已在此住了20多年了。 (2) 现在完成时表示过去发生的对现在有影响的动作 [1] 现在完成时的这种用法有时不带时间状语,有时可以和already, before, ever, just, lately, never, once, recently, yet等一些所指时间不具体的时间状语连用。如: Have you ever been to Australia? 你去过澳大利亚吗? [2] 有时现在完成时和now, today, this morning, this week, this year等表示现在的时间状语连用。如: I haven" t seen him today. 我今天没见过他。 I have seen him only once this year. 我今年只见过他一次。 (3) 现在完成时在时间和条件状语从句中表示将来完成的动作 I"ll go to the party as soon as (or when) I have finished my homework. 我完成作业后就去参加聚会。 (4) 现在完成时和until now, so far, in the past few years, up to the present等表示从某时到目前这段时间的状语连用 I have not heard from her so far. 到目前为止,我没有收到过她的信。 We have learned five hundred words up to the present. 到目前为止,我们已学了五百个生词。 但要注意:当意义明确时,适用现在完成时的句子可以不用时间状语。如: He has done a lot of work. 他干了许多工作。 She has told me about her story. 她跟我讲过她的故事。 请问PLC是什么?可以得话希望能讲得通俗一点。 实习电气工程自动化控制的机器,比如,流水等,交通十字路口的灯,电气控制的 几个初二英语问题急 1现在完成时的特征 2现在完成时的范围 3现在完成时与现在完成进行时求通俗一点 现在完成时态的结构【have+过去分词】,分两种使用情况1.表示动作【发生在过去,持续到现在】2.强调对现在的影响,翻译为‘已经" 现在完成进行时的结构是【have+been+doing】,强调动作还没结束,将继续进行下去 如:They have been working for tow hours.他们已经工作两小时了。 英语中现在完成时的概念? 过去的事情对现在有影响..一开始吧..我对这个概念好复杂..其实举几个例子就可以说清楚了..我已经在这住3年了 住3年了 表明现在还在住..所以对现在有影响 是现在完成时我3年前在这住 三年期 表示现在不在这住..所以对现在没影响 是过去时这个 影响..很抽象..我再想个例子..我擦了黑板 这样一般用于对话的..导致现在我可以在上面写东西..是对现在的影响,所以是现在完成时我擦过黑板 这样一般用于叙述某件事时,只是特指做过什么,没有什么影响语法:have/has (not) doneI have cleaned the blackboard so that I can write something on it.我擦了黑板以至于我能写东西在上面.(叙述这件事时.这个动作是对现在造成的影响.)I cleaned the blackboard and left.我擦完黑板我就走了.(这件事只是纯粹的描述某件事的发生,对现在一点影响都没有) 现在完成时的概念,结构,及运用,急啊 现在完成时 概念: 现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联络,也就是说,动作或状态发生在过去但它的影响现在还存在. 结构: have(has)+过去分词(done) 使用典型例句 I have lost my wallet.(含义是:现在我没有钱花了.) Jane has laid the table.(含义是:已可以吃饭了.) Michael has been ill.(含义是:现在仍然很虚弱) He has returned from abroad. (含义是:现在已在此地) 现在完成时使用中通常和一般过去时相区别,一般过去时也发生在过去,但是基本和现在不再有联络 常用在回忆的描述 现在完成时态的其他要点 2. 现在完成时可以用来表示发生在过去某一时刻的,持续到现在的情况,常与for,since连用. Mary has been ill for three days. I have lived here since 1998. 3. 现在完成时往往同表示不确定的过去时间状语连用,如already, yet, just, before, recently, lately等: He has already obtained a scholarship. I haven"t seen much of him recently (lately). We have seen that film before. Have they found the missing child yet 4. 现在完成时常常与表示频度的时间状语连用,如often, sometimes, ever, never, ice, on several oasion等: Have you ever been to Beijing I have never heard Bunny say anything against her. I have used this pen only three times. It is still good. Gee has met that gentleman on several oasions. 5. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如now, up to these few days/weeks/months/years, this morning/week/month/year, now, just, today, up to present, so far等: Peter has written six papers so far. Man has now learned to release energy from the nucleus of the atom. There has bee too much rain in San Francisco this year. The friendly relations and cooperation beeen our o countries have been enhanced in the past few years. Up to the present everything has been suessful. 6. 现在完成时表示现在之前业已完成的动作,虽然其效果或影响仍然存在但已不再继续,但是有一些现在完成时的句子,在后面加上for+一段时间,则现在完成时的动作就表示延续性. Thomas has studied Russian. (现在不再学俄语) Thomas has studied Russian for three years. (=Thomas began to study Russian three years ago, and is still studying it now.(同第2点用法第一个例句) 7. 现在完成时还可以用来表示过去的一个时间到现在这段时间内重复发生的动作. We have had four texts this semester. =================== 现在完成时的“完成用法”和“未完成用法” 1.现在完成时的"完成用法" 现在完成时的"完成用法"指的是动作发生在过去某一时刻并已结束,但该动作对现在产生了影响,与现在情况具有因果关系。 例如:He has turned off the light.他已把灯关了。(动作结束于过去,但说明的是现在的情况--灯现在不亮了。) 现在完成时"完成用法"的特点是动作不延续,因此,该时态只能与表示不定的过去时间状语(如:already,yet,before,recently等)、频度时间状语(如:never,ever,once等)、包括现在时刻在内的时间状语(如:this morning / month /year...,today等)连用。 例如: Have you found your pen yet?你已找到你的钢笔了吗? 2.现在完成时的"未完成用法" 现在完成时的"未完成用法"指的是动作开始于过去某一时刻,一直延续到现在,或可能还要继续下去。 例如:He has lived here since 1978.自从1978年以来,他一直住在这儿。(动作起始于1978年,一直住到现在,可能还要继续住下去。) I have been in the army for more than 5 years.我在部队已经呆了五年多了。(动作开始于5年前,一直延续至今,有可能还要继续下去。) 此种用法的句中常需一个表示一段时间的状语(由since或for引导),或表示与现在时刻相连的时间状语(如:up to now,so far)等。 例如:I have heard nothing from him up to now.到目前为止我没有他的任何讯息。 注意:(1)现在完成时的未完成用法只适用于延续性动词,不可用于终止性动词,即瞬间完成或延续时间很短的动词。如:e,go,arrive,leave,join,bee,die等。 (2)现在完成时常见两种句型: ①主语+have / has been+for短语 ②It is+一段时间+ since从句 例如:He has been in the League for three years.或It is three years since he joined the League. 他入团已三年了 一.have/has been doing sth. 1.现在完成进行时 当后面接有一段时间的词时,或是加表示时间的词时,可以用现在完成时.如果这件事现在还在持续或还在做,则可用 现在完成进行时. 如:I have been skating for 4 hours. I have finished my homework. 2.现在完成时的被动语态. 后接动词的过去分词. 如:The building has been built for 5 years. 现在完成时概念和用法,要简略易懂的谢谢 i have finished my work already. 我已经完成了我的工作。 表示已经完成的事情。。。 标高是什么讲得通俗一点! 标高的表示分为两种:绝对标高和相对标高,它们都是表示建筑物某一部位相对于基准面(标高的零点)的高度,是建筑物竖向设计和竖向定位的依据。 绝对标高是国家统一规定的基准面为零点的标高,我国规定以青岛附近黄海夏季的平均海平面作为绝对标高额零点; 相对标高是建筑物规定的基准面为零点的标高,通常是以建筑物内首层地面(主要地面)作为相对标高的零点。 相对标高零点与绝对标高有一个明确的对应关系。 新概念英语哪一课讲现在完成时 一册 ,真的,我学过了! 英语的现在完成时 ,概念,结构, 现在完在时:have ,has +过去分词 1)表示动作到现在为止已经完成或刚完成,汉语常用“了”或“过”来表示。如: I have finished my work.我把工作做完了。 She has read all these books.她把这些书都读完了。 2)动作在过去完成,表示“经验”或“结果”。汉语常用“过”来表示。如: Have you ever seen the play The Doll"s House? 你看过话剧《傀儡家庭》吗? Yes,I have seen it ice.我看过两遍了。 I have learnt to drive.我学过开车。 多看看例句,相信你很快就能掌握。 什么时候现在完成时代替将来完成时讲得详细一点,要举 你好!可以将问题讲得详细一点吗,这样比较有助于解答!比如拿一个题目上来看看或是怎样的,有具体题目比较好分析。 你好,这并不是主将从现,主将从现一般用于if条件从句。但他也是一种条件从句,意思是我一完成我的功课就会走。 但是亲,你的句子是作业本上的句子吗2023-08-04 14:14:451
现在完成时态的定义和标志词
就是刚完成的事呀,have,或has十过去分词2023-08-04 14:14:553
英语现在完成时时态语法知识讲解
现在完成时表示过去发生的动作对现在造成的影响或结果或表示过去的动作或状态持续到现在。下面小编给大家分享了有关现在完成时的英语语法知识,一起来看看吧! 现在完成时的基本结构和句型 一.基本结构:助动词have/has+过去分词(done) 二.句型: 否定句:主语+have/has+not+过去分词+其他. 一般疑问句:Have/Has+主语+过去分词+其他. 简略答语: Yes, 主语 + have/has.(肯定) No, 主语 + haven"t/hasn"t.(否定) 现在完成时的用法详解 一、现在完成时句型构成 基本结构:主语+have/has+动词的过去分词(p.p)(V-ed) e.g done 二、现在完成时用法 ①肯定句中:主语+has/have+动词的过去分词(p.p)(V-ed)+宾语(或者其他). ②否定句中:主语+haven"t/hasn"t+动词的过去分词(p.p)(V-ed)+宾语. ③一般疑问句中:Have/Has+主语+动词的过去分词(p.p)(V-ed)+宾语(或者其他).(末尾用问号) 三、现在完成时用法要点 1.现在完成时不能单独与准确时间连用,(如表示过去的时间状语) 如yesterday(morning、afternoon),last(morning、afternoon)等,除非与for,since连用. 2.现在完成时往往同表示不确定的过去时间状语连用 如already(肯定,句中),yet(否定,疑问,句中),just,before,recently,still,lately,never等: He has already obtained a scholarship.他已经获得了一份奖学金。 I haven"t seen much of him recently (lately).我已经很久没有看到他(最近的)。 We have seen that film before.我们以前已经看过那部电影了。 Have they found the missing child yet?他们找到失踪的孩子了吗? 3. 现在完成时态经常与表示频度的时间状语连用, 如often,sometimes,ever,never,twice,on several occasion等: Have you ever been to Beijing?你以前去过北京吗? I have never heard Bunny say anything against her.我从来没有听到Bunny说她的坏话。 I have used this pen only three times. It is still good.这支钢笔我只用过三次。它仍然是好的。 George has met that gentleman on several occasions.乔治已经在好几个场合见过那个先生几次。 4. 现在完成时还往往可以同包括现在时间在内的时间状语连用 如now,up to these few days/weeks/months/years,this morning/week/month/year,just,today,up to present,so far等: Peter has written six papers so far.彼得写了六篇论文,到目前为止。 Man has now learned to release energy from the nucleus of the atom.人们现在已经学会了从原子核中释放能量。 There has been too much rain in San Francisco this year.今年以来旧金山雨水太多。 The friendly relations and cooperation between our two countries have been enhanced in the past few years.我们两国之间的友好合作关系在近几年得到了提高。 Up to the present everything has been successful.到现在为止一切都是成功的。 5.现在完成时还可以用来表示过去的一个时间到现在这段时间内重复发生的动作. 即表示从过去某个时间直到现在的这个时间范围内不断重复发生的动作或情况,并且这个不断重复的动作有可能继续下去,也有可能到现在就结束。如: How often have you seen her? 你隔多少见她一次? My father has always gone to work by bike. 我父亲一向骑车上班。 6.现在完成时的"完成用法"指的是动作发生在过去某一时刻并已结束。 例如:He has turned the light off .他已把灯关了。 现在完成时"完成用法"的特点是动作不延续,因此,该时态只能与表示不定的过去时间状语(如:already,yet,before,recently等)、频度时间状语(如:never,ever等)、包括现在时刻在内的时间状语(如:this morning / month /year...,today等)连用。 例如:Have you found your pen?你已找到你的钢笔了吗? 7.现在完成时的"未完成用法"指的是动作开始于过去某一时刻,一直延续到现在,或可能还要继续下去。 例如:He has lived here since 1978.自从1978年以来,他一直住在这儿。(动作起始于1978年,一直住到现在,可能还要继续住下去。) I have been in the army for more than 5 years.我在部队已经呆了五年多了。(动作开始于5年前,一直延续至今,有可能还要继续下去。) 此种用法的句中常需一个表示一段时间的状语(由since或for引导),或表示与现在时刻相连的时间状语(如:up to now,so far)等。 例如:I have heard nothing from him up to now.到目前为止我没有他的任何消息。 注意:(1)现在完成时的未完成用法只适用于延续性动词,不可用于终止性动词,即瞬间完成或延续时间很短的动词。如:come,go,arrive,leave,join,become,die等。 8.现在完成时常和短语 "up to now /till now","so far" (意思是从过去某一确定的时间一直延续到现在)连用。 Up to/till now he"s read many story books. 至今他已读过好多故事书。 I"ve been to New York three times so far. 至今我已到纽约去过三次。 has gone (to),has been (to),has been (in) 的区别。 has gone to:表示某人已去了某地,而没有回来(去了没回)。 has been to :表示去过某地(去过已回来)。 现在完成时误区提醒: (1)have been(to)与have gone( to)的区别:have been(to)表示“去过某地(现在已经回来了)”,可用于各人称;have gone(to)表示“去某地了(说话时某人不在当地)”,常用于第三人称,前者可与once ,never,several times等连用,后者则不能。如:They have been to Beijing twice.他们去过北京两次。 He has gone to Beijing . 他去北京了。 (2)如单纯表示一段时间,或强调一段时间,虽有since一词,也不必用完成时。如:It is two years since his father died. =His father has been dead for two years.他父亲去世已有三年了。 (3)终止性动词现在完成时的否定式,已变成一种可以延续的状态,因此可以和表示一段时间的状语连用。 如:I haven"t left here since 1997.自从1997年以来,我一直没有离开过这儿。 has been in:表示一直呆在某地, 常与时间段搭配(呆了很久)。2023-08-04 14:15:031
现在完成时态的时态结构
现在完成时由“have/has+过去分词”构成,主要有两个含义:①表示动作发生在过去,对现在有影响,有时无时间状语,有时和一些表示不确定的过去时间状语连用,如:many times,just,yet,ever,never,already,before,so far, by now等连用。②表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作,用于延续性动词,且句中常带有表示一段时间的时间状语,如:since + 时间点/从句,for two months, so far等。二 、1)现在完成时和一般过去时都能表示过去发生过的动作,但现在完成时表示过去动作对现在的影响,并且表示这一动作已完成或还可能继续下去;2)而一般过去时与现在的情况没有联系,仅表示过去的动作,且这一动作到说话时已终止。因此现在完成时不能与表示明确的过去时间如:in1949,yesterday,last week等的状语连用,并且用when或where对这些时间和地点状语提问时,一般只用一般过去时。 在“it is the first/second...time that...。”或在“it/this/that is the +最高级+名词+that...。”结构中,that从句中的动词常用现在完成时;表示到说话时为止动作发生过几次。在“it + be...+since从句”这一结构中,be可用一般现在时或现在完成时,since从句一般用过去时。have/has/had +been +动词的现在进行时。 1)过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是result (结果)。2)过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状语连用,或无时间状语。一般过去时的时间状语:yesterday, last week,…ago, in1980, just now, 具体的时间状语共同的时间状语:this morning, tonight, this April, now, once,before, already, recently,lately现在完成时的时间状语for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,不确定的时间状语3)现在完成时可表示持续到现在的动作或状态,动词一般是延续性,如live, teach, learn, work, study, know.过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。举例:I saw this film yesterday.(强调看的动作发生过了。)I have seen this film.(强调对现在的影响,电影的内容已经知道了。)Why did you get up so early?(强调起床的动作已发生过了。)Who hasn"t handed in his paper?(强调有卷子,可能为不公平竞争。)She has returned from Paris.她已从巴黎回来了。She returned yesterday.她是昨天回来了。He has been in the League for three years.(在团内的状态可延续)He has been a League member for three years.(是团员的状态可持续)He joined the League three years ago.( 三年前入团,joined为短暂行为。)I have finished my homework now.---Will somebody go and get Dr. White?---He"s already been sent for.句子中如有过去时的时间副词(如 yesterday, last, week, in 1960)时,不能使用现在完成时,要用过去时。(错)Tom has written a letter to his parents last night.(对)Tom wrote a letter to his parents last night. 1)It is the first / second time…. that…结构中的从句部分,用现在完成时。It is the first time that I have visited the city.It was the third time that the boy had been late.2)This is the… that…结构,that从句要用现在完成时.This is the best film that I"ve (ever) seen.这是我看过的最好的电影。This is the first time (that) I"ve heard him sing.这是我第一次听他唱歌。 ---No, this is the first time I ___ here. was B. have been C. came D. am coming 答案B. This is the first time 后面所加从句应为现在完成时,故选B。---No, it"s the first time I ___ here. even, come B. even, have come C. ever, come D. ever, have come 答案D. ever意为曾经或无论何时,反意词为never,此两词常用于完成时。 This is the largest fish I have ever seen. It is / was the first time +that-clause 的句型中,从句要用完成时。注意:非延续性动词的否定形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。(错)I have received his letter for a month.(对)I haven"t received his letter for almost a month.比较since和forSince 用来说明动作起始时间,for用来说明动作延续时间长度。I have lived here for more than twenty years.I have lived here since I was born..My aunt has worked in a clinic since 1949.Some new oilfields have been opened up since 1976.I have known Xiao Li since she was a little girl.My brother has been in the Youth League for two years.I have not heard from my uncle for a long time.注意:并非有for 作为时间状语的句子都用现在完成时。I worked here for more than twenty years.(我现在已不在这里工作。)I have worked here for many years.(现在我仍在这里工作。)小窍门:当现在完成时+一段时间,这一结构中,我们用下面的公式转化,很容易就能排除非延续动词在完成时中的误使。 (对) Tom has studied Russian for three years. = Tom began to study Russian three years ago, and is still studying it now. (错) Harry has got married for six years. = Harry began to get married six years ago, and is still getting married now.显然,第二句不对,它应改为 Harry got married six years ago.或 Harry has been married for six years.2023-08-04 14:15:134
现在完成时态中动词的常见形式
一、现在完成时态中动词的构成现在完成时态是由助动词“have / has”和过去分词构成的。具体构成如下:1. 常规形式:主语 + have/has + 过去分词 + 其他补充信息例如:- I have finished my homework. (我已经完成了我的作业。)- He has never been to Japan before. (他以前从来没有去过日本。)2. 否定形式:主语 + have/has + not + 过去分词 + 其他补充信息例如:- I haven"t seen the movie yet. (我还没有看这部电影。)- She hasn"t finished her presentation yet. (她还没有完成她的演讲。)3. 疑问形式:Have / Has + 主语 + 过去分词 + 其他补充信息?例如:- Have you ever traveled to Europe? (你去过欧洲吗?)- Has she studied English before? (她以前学过英语吗?)二、现在完成时态中动词的变化在现在完成时态中,动词的变化相对简单,而且基本上遵循一般过去式中动词的变化规则。最常见的动词变化形式包括:1. 一般情况下,动词在现在完成时态中只需要在词尾加上“-ed”即可,如果是以“e”结尾的单词,只需要再加上一个“d”,如:- work - worked- play - played- dance - danced2. 如果动词以辅音字母 +“y”结尾,把“y”变成“i”,再加上“-ed”,如:- carry - carried- study - studied- worry - worried3. 不规则动词,如:- go - gone- eat - eaten- do - done2023-08-04 14:15:311
现在完成时结构
现在完成时表示过去发生的动作对现在造成影响,或是过去的状态持续到现在。基本结构为:主语+have/has +动词的过去分词,常搭配的状语有already、yet、so far等。 扩展资料 具体用法: (1)表示动作发生在过去的动作对现在造成的影响或者结果,而这种影响或者结果往往是说话人的`兴趣所在。 常用的状语有already, yet, not? yet, now, just, by this time等。 例: The bus has come here. 公共汽车已经来了。 Someone has cleaned the window. 有人已经擦了窗户。 (2)表示过去已经开始,持续到现在而且可能继续下去的动作。 与表示一段时间的状语连用,如today, this week/ month/ summer, lately, recently, these days, so far, in the past few days, since the end of last year, for a long time等。 例: We have lived here for two years. 我们在这里住了两年了。 注意:瞬间动词与延续动词 1 .瞬间动词又叫非延续性动词,还叫终止性动词。瞬间动词可以有现在完成时态, 但不可以接一段时间,若要接一段时间,须要做一些相应的变换。 2. 瞬间动词在完成时态中的否定式可以接一段时间。 常见的瞬间动词: (1) 来(come)、去(go)、到(get to/reach/arrive at)、离(leave)、看(see)、听(说)hear (2) 买(buy)、卖(sell)、开(open)、关(close)、起床(get up) (3) 参加(join/take part in)、开发(begin/start)、还(return/give)(与)借(borrow/lend) (4) 变成(become/turn)、带(bring/take)、给(give)、死(die)、完(finish/end)、接(receive/hear from) 瞬间动词接一段时间: ⑴.将时间状语改为时间段 + ago,句中谓语动词用一般过去时. eg.我弟弟参军两年了. My brother joined the army two years ago. ⑵.若保留for+时间段,since+时间点/从句, 或用在 how long 句型中,则需将终止性动词改为相应的状态动词或延续性动词 常见瞬间动词与延续性动词(或状态动词)的对应关系: come/go/arrive/get/reach/move------be in/at open-----be open die------be dead close----be closed become---be borrow---keep begin/start-----be on put on----wear leave-----be away (from) fall asleep----be asleep end/finish-----be over catch a cold-----have a cold join the army----be in the army be a soldier join the Party----be in the Party be a Party member 例: They borrowed the book two weeks ago.他们两个星期前借的这本书。 → They have kept the book for two weeks. A month has passed since he left home. 他离开家已经一个月了。 → He has been away from home for a month. 注意:以下表示法的含义及用法 have been (to): 去过或到过(某地)(表示某人过去的经历) have gone (to):去(某地)了 (现在可能已在某地) have come (to):来(某地)了 (现在可能已在某地) have been in? +一段时间: 已在某地一段时间了 例: He has been to Hangzhou several times. 他到过杭州几次了。 He has gong to Hangzhou, so he can"t help us. 他去杭州了,所以他不可能帮助我们。 He has come to our city. Let"s go to visit him. 他已经到我们城市来了,我们去拜访他吧。 She has been in London for half a year. 她在伦敦已经半年了。2023-08-04 14:16:261
英语现在完成时态构成
have has done2023-08-04 14:16:355
现在完成时态的定义,结构,连用词
它主要用来区分过去发生事情的先后顺序现在完成时由“have/has+过去分词”构成,主要有两个含义: ①表示动作发生在过去,但与现在的情况有联系,有时无时间状语,有时和一些表示不确定的过去时间状语连用,如:manytimes,just,yet,ever,never,just,already,before,sofar,bynow等连用。 ②表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作,用于延续性动词,且句中常带有表示一段时间的时间状语,如:since+时间点/从句,fortwomonths,sofar等。2023-08-04 14:16:511
什么是现在完成时
现在完成时的标志词是:already、yet、just、never、ever、before、since一、already adv. 早已,已经;先前; 用在肯定句中(be动词、助动词、情态动词之后,实意动词之前)常与yet进行转换。例如:I have already finished the work.翻译: 我已经完成这项工作了。改为否定句:I haven"t finished the work yet.翻译:我还没有完成这项工作。改为一般疑问句:Have you finished the work yet.二、yet adv. 还;但是;已经;又,再放在否定句和一般疑问句句末。例句:1、I didn"t receive a letter from him yet.翻译: 我还没有收到过他的信。2、Have you eaten yet?翻译:你吃饭了吗?三、just只用于陈述句,意思是:刚才,放在have和has的后面。例句:I have just receivde a letter .翻译:我刚收到一份信。四、never用于否定句译为:从不,放在have和has的后面。例句:I"ve never been to Beijing.翻译:我从未去过北京。五、ever用于疑问句译为“曾经,放在have和has的后面。例句:Have you ever been to Beijing?翻译:你曾经去过北京吗?六、before用于肯定句译为:以前,放在have和has的后面,一般放在句末。例句:He has never been to Beijing before.翻译:他以前从未去过北京。七、since+延续动词用一般过去时态或现在完成时态均可,意但思不一样:用一般过去时态,表示从句动作”结束“以来,主句活动在持续;用现在完成时态,表示从句动作”开始“以来,主句活动在持续。例句:1、It"s been three years since I worked in this company.翻译:我不在这家公司工作有三年了。2、It"s been three years since I have worked in this company.翻译:我在这家公司工作有三年了。编辑于 2019-03-07TA的回答是否帮助到你了?能够帮助到你是知道答主们最快乐的事啦!2023-08-04 14:17:001
现在完成时态如何回答
你好!借助助动词have或has如Haveyoufinishedyourhomework?Yes,Ihave.HasshebeentoBeijing?No,shehasn"t.百度教育团队【海纳百川团】为您解答如满意,请点击“选为满意答案”按钮,谢谢~2023-08-04 14:17:092
如何讲解“英语的现在完成时态呢?” 现在完成时态里常用的时间状语有哪些?
现在完成时的构成 have∕has + P.P. 现在完成时的用法 ⑴ 与just连用,表示刚刚完成的动作或状态(just放在have∕has与P.P.之间). I have just had lunch. He has just finished his homework. ⑵ 表示动作发生在过去,持续到现在,有可能延续到将来,常与since“自从…”(后面跟一点时间)for(后面跟一段时间)连用. I have learned English since 2000. He has lived there for 10 years. ⑶ 表示过去的动作对现在的影响. He has lost his key. ⑷ 与最高级连用,表示“到目前为止最…” You"re the cleverest girl that I"ve seen. ⑸ 与It∕This the first time that…连用, 表示“第一次……” It∕This is the first time that he has learned English. ⑹ have∕has been to…曾经去过…(已经回来了) have∕has gone to…去了…(还没回来) I have been to Shanghai. Tom has gone to Shanghai.2023-08-04 14:17:181
现在完成时态句子(我要20个)
1. He has turned off the light. 他已把灯关了。2. Have you found your pen yet?你已找到你的钢笔了吗?3. He has lived here since 1978.自从1978年以来,他一直住在这儿。4. I have been in the army for more than 5 years.我在部队已经呆了五年多了。5. I have heard nothing from him up to now.到目前为止我没有他的任何消息。 6. He has been in the League for three years.= It is three years since he joined the League. 他入团已三年了。7. The train has arrived. 火车到了。8. Have you joined the computer group? 你加入电脑小组了吗?9. Jill has bought a new computer.吉尔买了一台新电脑。10. I have just turned off the light. 我刚刚把灯关上。11. She has lost her bike. 她把自行车丢了。12. We have had much snow this winter. 今年冬天多雪。 13. She has taught in the school for ten years. 她在这所学校教书已经10年了。 14. I haven"t eaten anything since breakfast. 我从早饭起就一直没有吃东西。 15. He has done a lot of work in the past two years. 在过去两年中他做了许多工作。 16. I have learned about two hundred English words this morning. 本月我学了大约200个英语单词。 17. I have been to the Great Wall twice. 我曾经去过长城两次。18. She hasn"t left home for a year. 她离开家还不到一年。 19. I haven"t seen Jamie for two months. 我两个月没见杰米了。 20. The old man hasn"t returned to his hometown for about fifty years. 这位老人约有50年没有回家乡了。2023-08-04 14:17:263
现在完成时的结构
主语+have/has+过去分词2023-08-04 14:17:569
现在完成时
be doing sth.2023-08-04 14:18:593
现在完成时怎样使用?
2023-08-04 14:19:161
现在完成时和过去时的区别
01过去式表示过去某一时刻发生的动作或单纯叙述过去的事情,强调动作。现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响。比如,I saw this film last week.强调的是动作,表明看过这个电影。I have seen this film last week.强调的是动作的影响,表明看过这个电影后知道电影的内容。02现在完成时可表示持续到现在的动作或状态,动词一般是延续性的,比如each, learn, work, study等。而一般过去式的动词一般是非延续的,比如come, go, leave, start, die, finish,等。03过去式常与时间状语连用;现在完成时通常与模糊的时间状语连用,或者没有时间状语。一般过去时的时间状语有yesterday,just now,······ago,in 1900s,once等。现在完成时的时间状语有for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always等。04对于过去发生的,一直持续到现在的动作,只能用现在完成时。而一般过去时只能描述已经结束的动作。2023-08-04 14:19:266
现在完成时的标志词是什么?
现在完成时的标志词是:already、yet、just、never、ever、before、since2023-08-04 14:20:132
什么时候,现在完成时态用have/has been+~~~~?
have/has后面加been的是现在完成时的被动语态如:thehomeworkhasbeenfinishedbyme.=ihavefinishedthehomework.2023-08-04 14:20:372
初中英语的现在完成时、过去完成时、现在完成进行时的区别
简单的讲:现在完成时 是对现在的影响 。 过去完成时 是过去的过去 。 现在完成进行时是现在完成时态下的真正做某事。2023-08-04 14:20:463
现在完成时的标志词有哪些?
1.for+时间段;I have learned English for ten years. 2.常见的副词:lately;recently, just,up to now, till now, so far, these days, in the past few years/months/weeks/days 3.注意:for+时间段;since+时间点 They have lived in Beijing for five years. They have lived in Beijing since l995. 4.This is the first time that I have watched stars through a telescope. 第几次做某事,后面跟现在完成时。2023-08-04 14:20:553
一篇英语作文(现在完成时态)带中文翻译
I have never been late for school.But yesterday I came very close.By the time I got up,my father had already gone into the bathroom.I had to wait for him.Then I had a quick supper and ran to bus stop.By the time I got there ,the bus had already left.I was very sad.By the time I walked school,the bell had rung.我上学从来没有迟到过,可是,昨天,险些迟到,我起床时,爸爸应经去洗澡了。我只能等爸爸出来,然后我吃了点快餐跑步到公交车站,可当我赶到时,公交车刚好开走,我很是沮丧,当我步行到达学校时上课铃已经响起。2023-08-04 14:21:132
现在完成时的标志词有哪些?
现在完成时,由助动词ter的直陈式现在时变位加上动词的过去分词构成,它可以表示在过去发生,并延续到现在的动作。2023-08-04 14:21:281
现在进行时和现在完成进行时有啥区别?
现在进行时的基本用法:1.表示现在( 指说话人说话时) 正在发生的事情.We are waiting for you.2.习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行.Mr.Green is writing another novel.(说话时并未在写,只处于写作的状态.)She is learning piano under Mr.Smith.3.表示渐变的动词有:get,grow,become,turn,run,go,begin等.The leaves are turning red.It"s getting warmer and warmer.4.与always,constantly,forever 等词连用,表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩.You are always changing your mind.现在完成时行时的用法:现在完成进行时表示从过去某一时间开始一直延续到现在的动作.现在这个动作可能刚刚终止,也可能仍在进行.I have been sitting here all afternoon.我在这儿坐了一下午了.How long has it been raining?雨下了多久了?They have been fighting for independence since 1960s.他们从60年代以来一直为独立而斗争.现在完成进行时和现在完成时的区别1)现在完成进行时一般强调过去发生的动作现在仍在继续.现在完成时强调过去发生的动作现在已经完成或表示曾经发生过.I have been writing an article.我一直在写一篇文章.(仍在)I have written an article.这已写好一篇文章.(已完成)I have been reading that book since last week.上周以来,我一直在读那本书.(还在读)I have read that book before.以前我曾读过那本书.(动作在过去曾经发生过)2023-08-04 14:21:588
现在完成时态的标志性的词语有哪些?
yet already in the last five/few years for + 一段时间 since every never up to/till now so far Up to the present once recently lately 1.现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在. I have lost my wallet.(含义是:现在我没有钱花了.) Jane has laid the table.(含义是:已可以吃饭了.) Michael has been ill.(含义是:现在仍然很虚弱) He has returned from abroad. (含义是:现在已在此地) 2. 现在完成时可以用来表示发生在过去某一时刻的,持续到现在的情况,常与for,since连用. Mary has been ill for three days. I have lived here since 1998. 3. 现在完成时往往同表示不确定的过去时间状语连用,如already, yet, just, before, recently, lately等: He has already obtained a scholarship. We have seen that film before. Have they found the missing child yet 4. 现在完成时常常与表示频度的时间状语连用,如often, sometimes, twice, on several occasion等: Have you ever been to Beijing George has met that gentleman on several occasions. 5. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如now, up to these few days/weeks/months/years, this morning/week/month/year, now, just, today, . 6. 现在完成时表示现在之前业已完成的动作,虽然其效果或影响仍然存在但已不再继续,但是有一些现在完成时的句子,在后面加上for+一段时间,则现在完成时的动作就表示延续性. Thomas has studied Russian. (现在不再学俄语) Thomas has studied Russian for three years. (=Thomas began to study Russian three years ago, and is still studying it now.(同第2点用法第一个例句) 7. 现在完成时还可以用来表示过去的一个时间到现在这段时间内重复发生的动作. We have had four texts this semester. 例如:He has turned off the light.他已把灯关了。(动作结束于过去,但说明的是现在的情况--灯现在不亮了。) 现在完成时"完成用法"的特点是动作不延续,因此,该时态只能与表示不定的过去时间状语(如:already,yet,before,recently等)、频度时间状语(如:never,ever,once等)、包括现在时刻在内的时间状语(如:this morning / month /year...,today等)连用。 例如: Have you found your pen yet?你已找到你的钢笔了吗? 例如:He has lived here since 1978.自从1978年以来,他一直住在这儿。(动作起始于1978年,一直住到现在,可能还要继续住下去。) I have been in the army for more than 5 years.我在部队已经呆了五年多了。(动作开始于5年前,一直延续至今,有可能还要继续下去。) 此种用法的句中常需一个表示一段时间的状语(由since或for引导),或表示与现在时刻相连的时间状语 例如:I have heard nothing from him up to now.到目前为止我没有他的任何消息。 注意:(1)现在完成时的未完成用法只适用于延续性动词,不可用于终止性动词,即瞬间完成或延续时间很短的动词。如:come,go,arrive,leave,join,become,die等。2023-08-04 14:22:451
简述英语现在进行时,现在完成时,一般现在时,一般过去时的语法和注意问题,别简单写,越详细越好!
翻语法书2023-08-04 14:23:091
现在完成时态到底是什么鬼?
本文适合有一定时态基础的学员看,还没学过时态的同学估计看不懂。总之适合复习总结,不适合拿来学习新知哈。 这几天讲完成时态讲到吐。初中孩子的反应都差不多,基本上都能说“完成时就是指过去发生了一个动作对现在产生了影响,或者一个动作从过去持续到现在。”可是很少有学生真的明白这句话的意思,做题的时候还是一脸懵X. 本文针对口语和应试,大概就是我上课的流程,为了迎合应试的套路做了一点总结,当然语法其实是前人总结的东西,我用我的方式讲出来,目前受到的反馈还是良好,学生觉得思路清晰了很多,大家根据自己的实际情况捡点来用吧,有部分知识点,因为要迎合考点,可能有些强词夺理,读者朋友们就不要跟我纠结了。记住就行了。 首先,在咱们中国人的概念里,就只有过去现在将来三种时态。也就是黑土白云参加的那个节目总结的“昨天,今天,明天”。对应英文的时态分别是: 一、一般过去时 ,动词用did形式,如果强调某个时间点发生的事情,就用 过去进行时 ,was/were doing考试的时候,常用的情景就是“我昨天打电话你没接,哦,我昨天这个时候正在洗澡”I was taking a shower when you called me. 二、一般现在时 ,动词用do/does形式,如果强调现在某个时刻正在发生的事情,就用 现在进行时 ,am/is/are doing.考试的时候一般有很明显的提示,比如look!有人正在跳舞,Listen有人正在唱歌……这种类似的提示。 三、 一般将来时 ,动词用will do或者be going to do,将来进行时的形态按理说是will be doing但是在考试中意义不大,所以很多语法教材并没有讲将来进行时这个东东。将来时态最喜欢和一般现在时态一起被考,也就是传说中的“主将从现”——如果明天下雨,我就不去了If It rains tomorrow, I will not go.表示条件的从句用一般现在时,表示结果的主句用一般将来时。 你说外国人怎么就这么麻烦,有了以上三个大时态还不够,非得要整个完成时态,有意义么? 有的。 首先,完成时态 “心机” 比过去时态更重,它强调两个字 “已经” 。 咱们来翻译这两个句子。 (1)I finished my homework.我做完了作业。 (2)I have finished my homework.我已经做完了作业。 看到没有,多了两个字,“已经”。两个句子都是表示做完了某件事,但是第一句,只是简单的陈述,多用在写日记或者跟别人描述自己的经历的时候,感情色彩是中性的,要知道说话的人究竟想干啥,还得听下一句才行。 而第二句嘛,用的是完成时态,have/has+done是动词的公式,为什么说公式呢,其实也是套路,have在这个地方不是实意动词,它只是为了帮助后面那个done组成完成时态的一个助动词,严格说来是没有意义的,非得要翻译的话,就只能翻译成”已经”。 就是因为多了“已经”这两个字,所以咱们要用完成时态,因为完成时态有潜台词,完成时态感情更充沛。 第二句话,咱们有很多联想的空间,比如我已经做完了作业,我可以去玩么?我可以看电视么?我可以打游戏么?因为我已经做完作业了呀! 再比如: 小明硬要借本书给我看,我没有明确拒绝,高冷地回了一句I have already read the book,啥意思啊?我看过这本书了,我已经看过这本书了,所以呢,不用借给我了。 这就是所谓的过去发生的动作对现在产生了影响。 “我看过这本书”对我现在回答小明的态度产生了影响。 再次强调,完成时态和过去时态都可以表示过去发生的一个动作,但是完成时态的那个动作对现在仍然有影响,比较简单粗暴的理解就是完成时态拼死了都想强调两个字“已经”。因为完成时态的感情更充沛,有潜台词。比如I have left home,意思我是已经出门了别来找我了,I have finished my task,意思是我已经完成任务了你别再罗里吧嗦好了么? 其次,完成时态跟的是时间段,过去时态跟的是时间点。这个点和段跟中文的意义有些偏差,咱们为了考试,就记一些关键词。 时间点: (1)last week,last summer反正有last的 (2)2 days ago, 3 years ago, long time ago反正有ago的 (3)然后就是地球人都知道的yesterday,the day before yesterday (4)还有比较含蓄的比如in1991 以上代表英文的“时间点”,看到它们,就是过去时态! 时间段: (1)最明显的是for +一段时间,for 10 years之类的 (2)然后是since+过去的时间点(注意since 1991和in 1991的区别,前者是时间段用完成时,后者是时间点用过去时) (3)比较含蓄的比如次数:twice ,three times, many times e.g I have told you many times我已经告诉过你很多次啦。 (4)另外,never和ever用完成时态的几率也很高,但不绝对。一个表示从来不,一个表示曾经做过。 I have never been so scared in all my life 我一生中从来没有这么害怕过。 Have you ever been to Beijing? 你去过北京么? 看到以上的字眼,就好像看到考卷君在挑衅:来呀我就是想让你用完成时态,你倒是用呀?!可是仍然有不少同学不能明白考卷君的良苦用心。 来来来,大总结: A因为完成时态强调“已经”,所以考试的时候看到already或者yet那就是完成时态跑不掉了,记得already和yet都只是起到强调作用,有它没它句子没差,但是考试就喜欢考,already用在肯定句,yet用在否定或者疑问句。 e.g Have you finished your task yet? 肯定回答,I have already finished my task. 否定回答,I haven"t finished my task yet.或者简写Not yet(还没呢!) B因为完成时态跟的是时间段,咱们看到for+一段时间或者since+过去时间点,或者次数,咱们会用完成时态。 还有没见过世面的娃也会用完成时态:我从来没看过这么有趣的电影。 I have never seen such an interesting film. 喜欢炫耀的娃也喜欢用完成时态:你去过成都么? Have you ever been to Chengdu? 明白了吧?最后给大家再补充两个考点: 第一个考点: Have been to去了回来了 have goneto去了没回 概念大家都知道,但是很多同学做题就会搞混淆,所以总是会选错。 大家记得: 吹牛的人喜欢用have been to,因为他喜欢站在你面前夸夸其谈 I have been to many countries in the world.我去过这世界很多国家。 找人的时候打电话的时候喜欢用have gone to Where is Shirley? Oh, Shirley is not here, she has gone to Beijing. (老是有人去北京也不知道为啥。) 已经读书的时候我也经常记混,后来我想了一个法子,叫强词夺理法,我把“gone”看着是继续,go on的双胞胎,表示在路上,没在这里。 Have been to叫去过,have gone to叫去了,记住了么? 第二个考点: Tom已经死了好多年了 。这个考点,很多人都知道,因为被坑了很多次还是记不住。 完成时态要跟时间段。但是有些词能力不够,没有办法帮完成时态完成这个心愿,因为瞬间性动词跟不了时间段。但是完成时态执意要跟一段时间的话,咱们的瞬间动词只有放弃自我,变成可以延续的表达。看下面的句子: 1他已经死了。He has died. 他已经死了好多年。He has been dead for many years.(总不能说最后一口气吊了十年都没死成吧) 2他已经离开了。He has left. 他已经离开几个月了。He has been away for months. 3他已经买了这辆自行车。He has bought the bike 这辆自行车他已经买了一周了。He has had/kept the bike for a week.(真实的情况是拥有这辆自行车已经一周了,不是买卖递钱的动作持续了一周。) All in all,完成时态之所以存在,是因为它更有心机,更富感情,而且它的状态是可以持续更久的。 比如下面这段问答: Have you bought the bike Yet? Yes, I have.I bought it a week ago. 欢迎大家提问,本文会适时更新。 【连载】《口语闯进门》目录2023-08-04 14:23:161
现在完成时和一般现在时一起用可以吗
可以比如说I love reading and I have read a lot of books.在表示“持续性”时,两者表示持续时间的长短是有些区别的。现在完成时态表示“过去的”动作持续,持续多久尚不清楚;而一般现在则表示动作和状态不仅仅简单持续,更是一种持续的“习惯、现象”等。举个比较通俗的例子: I love you. 我爱你(一直铁定不变的爱你) I have loved you. 我爱你(这份爱能持续多久那就不清楚了) Tom rides to school. 汤姆骑车上学(养成了这种习惯,不存在变数了) Tom has ridden to school. 汤姆骑车上学(这种行为存在变数,比如以后也许会by bus)现在完成时: 用来表示之前已发生或完成的动作或状态,其结果的确和现在有联系。动作或状态发生在过去 但它的影响现在还存在;也可表示持续到现在的动作或状态。其构成: have (has) +过去分词。 I have not seen Jim for three years. 我已经三年没有见到Jim了。 分析:我和Jim已经3年不见,此后也可能继续见不着。但是我见不着他不算是一种持续的习惯、现象吧?一般现在时的用法: 1) 经常性或习惯性的动作,常与表示频腮度的时间状语连用。 时间状语: every…, sometimes, at…, on Sunday I leave home for school at 7 every morning.2) 客观真理,客观存在,科学事实。 The earth moves around the sun. Shanghai lies in the east of China.3) 表示格言或警句中。 Pride goes before a fall. 骄者必败。 注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。例:Columbus proved that the earth is round..4) 现在时刻的状态、能力、性格、个性。 I don"t want so much. Ann Wang writes good English but does not speak well.比较:Now I put the sugar in the cup. I am doing my homework now. 第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如:Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时。2023-08-04 14:23:231
I __(study)English for 5 years. 根据这个请讲讲现在完成时和现在完成进行时的区别,谢谢了。
这里两个空填 have studied I have studied English for 5 years 我已经学习英语5年了。(对现状和将来并无暗示或描述)I have been studied English for 5 years 我学习英语五年(并将继续学下去) 这个,其实如果后面没有比较清晰表达现在仍然怎样的话,通常还是用现在完成时比较多的。【楼主参考下~希望对你有帮助~】2023-08-04 14:23:333
时态问题1!!!!!
英语中及物动词有两种语态,即主动语态和被动语态。主动语态表示主语是动作的执行者被动语态表示主语是动作的承受者。被动语态由“助动词be+及物动词的过去分词”构成。助动词be有人称、时态和数的变化。 1. 一般现在时的被动语态构成:is / am / are + 及物动词的过去分词 Our classroom is cleaned everyday. I am asked to study hard. Knives are used for cutting things. 2. 一般过去时的被动语态构成:was / were + 及物动词的过去分词 A new shop was built last year. Dinosaur eggs were laid long long ago. 3. 现在完成时的被动语态构成:has / have + been + 及物动词的过去分词 This book has been translated into many languages. Many man-made satellites have been sent up into space by many countries. 4. 一般将来时的被动语态构成:will+ be + 及物动词的过去分词 A new hospital will be built in our city. Many more trees will be planted next year. 5. 含有情态动词的被动语态构成:情态动词+ be + 及物动词的过去分词 Young trees must be watered often. Your mistakes should be corrected right now. The door may be locked inside. Your homework can be handed in tomorrow. 6. 现在进行时的被动语态构成:am / is / are + being + 及物动词的过去分词 Uncle Wang is mending my bike now.→ My bike is being repaired by Tom now. They are planting trees over there. → Trees are being planted over there by them. 7. 不定式的被动语态:to + be + 及物动词的过去分词 There are two books to be read. → There are twenty more trees to be planted.2023-08-04 14:23:435
现在完成时态的用法。
Present perfect tense的格式是have(has)+ 过去分词现在完成式是和现在有关的1)表示刚完成的事,如:I have brushed my teeth 2)表示过去的所发生的动作,其结果继续到现在的状态it has become cold3)表示某状态,从过去某时继续到现在,如:She has came to uk for 4 years4)表示过去某时的经验,即我们文章的「曾经」,如:i have been to korea5)在时间,或条件的副词子句中,用来代替未来完成式,如:Let"s wait till he has finished reading the book.2023-08-04 14:23:591
现在完成时态的结构
现在完成时由“have/has+过去分词”构成,主要有两个含义:①表示动作发生在过去,对现在有影响,有时无时间状语,有时和一些表示不确定的过去时间状语连用,如:many times,just,yet,ever,never,already,before,so far, by now等连用。②表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作,用于延续性动词,且句中常带有表示一段时间的时间状语,如:since + 时间点/从句,for two months, so far等。二 、1)现在完成时和一般过去时都能表示过去发生过的动作,但现在完成时表示过去动作对现在的影响,并且表示这一动作已完成或还可能继续下去;2)而一般过去时与现在的情况没有联系,仅表示过去的动作,且这一动作到说话时已终止。因此现在完成时不能与表示明确的过去时间如:in1949,yesterday,last week等的状语连用,并且用when或where对这些时间和地点状语提问时,一般只用一般过去时。 在“it is the first/second...time that...。”或在“it/this/that is the +最高级+名词+that...。”结构中,that从句中的动词常用现在完成时;表示到说话时为止动作发生过几次。在“it + be...+since从句”这一结构中,be可用一般现在时或现在完成时,since从句一般用过去时。have/has/had +been +动词的现在进行时。 1)过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是result (结果)。2)过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状语连用,或无时间状语。一般过去时的时间状语:yesterday, last week,…ago, in1980, just now, 具体的时间状语共同的时间状语:this morning, tonight, this April, now, once,before, already, recently,lately现在完成时的时间状语for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,不确定的时间状语3)现在完成时可表示持续到现在的动作或状态,动词一般是延续性,如live, teach, learn, work, study, know.过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。举例:I saw this film yesterday.(强调看的动作发生过了。)I have seen this film.(强调对现在的影响,电影的内容已经知道了。)Why did you get up so early?(强调起床的动作已发生过了。)Who hasn"t handed in his paper?(强调有卷子,可能为不公平竞争。)She has returned from Paris.她已从巴黎回来了。She returned yesterday.她是昨天回来了。He has been in the League for three years.(在团内的状态可延续)He has been a League member for three years.(是团员的状态可持续)He joined the League three years ago.( 三年前入团,joined为短暂行为。)I have finished my homework now.---Will somebody go and get Dr. White?---He"s already been sent for.句子中如有过去时的时间副词(如 yesterday, last, week, in 1960)时,不能使用现在完成时,要用过去时。(错)Tom has written a letter to his parents last night.(对)Tom wrote a letter to his parents last night. 1)It is the first / second time…. that…结构中的从句部分,用现在完成时。It is the first time that I have visited the city.It was the third time that the boy had been late.2)This is the… that…结构,that从句要用现在完成时.This is the best film that I"ve (ever) seen.这是我看过的最好的电影。This is the first time (that) I"ve heard him sing.这是我第一次听他唱歌。 ---No, this is the first time I ___ here. was B. have been C. came D. am coming 答案B. This is the first time 后面所加从句应为现在完成时,故选B。---No, it"s the first time I ___ here. even, come B. even, have come C. ever, come D. ever, have come 答案D. ever意为曾经或无论何时,反意词为never,此两词常用于完成时。 This is the largest fish I have ever seen. It is / was the first time +that-clause 的句型中,从句要用完成时。注意:非延续性动词的否定形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。(错)I have received his letter for a month.(对)I haven"t received his letter for almost a month.比较since和forSince 用来说明动作起始时间,for用来说明动作延续时间长度。I have lived here for more than twenty years.I have lived here since I was born..My aunt has worked in a clinic since 1949.Some new oilfields have been opened up since 1976.I have known Xiao Li since she was a little girl.My brother has been in the Youth League for two years.I have not heard from my uncle for a long time.注意:并非有for 作为时间状语的句子都用现在完成时。I worked here for more than twenty years.(我现在已不在这里工作。)I have worked here for many years.(现在我仍在这里工作2023-08-04 14:24:191
英语中在什么情况下使用现在完成时?
现在完成时态表示过去发生的动作,对现在造成的影响或结果。常与 already,yet,ever never,just,before ,for ,since等连用2023-08-04 14:24:565
现在完成时的结构?
表示过去发生的动作对现在造成的影响或结果2.表示过去的动作或状态持续到现在3.构成 主语+have/has +动词的过去分词.基本简介现在完成时2023-08-04 14:25:3314
现在完成时的用法
不能作答2023-08-04 14:26:214
英语:什么时候用现在完成时
当表示一个开始于过去的动作,持续到现在;刚刚结束的动作;过去的一种经验或经历时,常用现在完成时态,做题是会有一些标志性的词,如:just already ever , never , so far , in the past ...years ,recently , since ..., for ...等。2023-08-04 14:26:403
现在完成时态的单词如何变化
★现在完成时的句子中发生变化的只有谓语动词.如果是主谓宾句型,格式是:主语+【have+动词完成时】+宾语例如:I have finished this work.我已经完成了这项工作.如果是主谓宾被动句型,格式是:主语+【have+been+动词...2023-08-04 14:27:091
请完述现在完成时态
由“have/has+过去分词”构成,主要有两个含义: ①表示动作发生在过去,但与现在的情况有联系,有时无时间状语,有时和一些表示不确定的过去时间状语连用,如:many times,just,yet,ever,never,already,before,so far, by now等连用。 ②表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作,用于延续性动词,且句中常带有表示一段时间的时间状语,如:since + 时间点/从句,for two months, so far等。目录1时态结构▪ 比较过去时与现在完成时▪ 用于现在完成时的句型▪ 典型例题2since用法▪ 延续动词与瞬间动词▪ 典型例题▪ 练习题21时态结构编辑现在完成时由“have/has+过去分词”构成,主要有两个含义:①表示动作发生在过去,对现在有影响,有时无时间状语,有时和一些表示不确定的过去时间状语连用,如:many times,just,yet,ever,never,already,before,so far, by now等连用。②表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作,用于延续性动词,且句中常带有表示一段时间的时间状语,如:since + 时间点/从句,for two months, so far等。二 、1)现在完成时和一般过去时都能表示过去发生过的动作,但现在完成时表示过去动作对现在的影响,并且表示这一动作已完成或还可能继续下去;2)而一般过去时与现在的情况没有联系,仅表示过去的动作,且这一动作到说话时已终止。因此现在完成时不能与表示明确的过去时间如:in1949,yesterday,last week等的状语连用,并且用when或where对这些时间和地点状语提问时,一般只用一般过去时。在“it is first/second...time that...。”或在“it/this/that is the +最高级+名词+that...。”结构中,that从句中的动词常用现在完成时;在“it + be...+since从句”这一结构中,be可用一般现在时或现在完成时,since从句一般用过去时。have/has/had +been +动词的现在进行时。比较过去时与现在完成时1)过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响。2)过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状语连用,或无时间状语。一般过去时的时间状语:yesterday, last week,…ago, in1980, just now, 具体的时间状语共同的时间状语:this morning, tonight, this April, now, once,before, already, recently,lately现在完成时的时间状语for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,不确定的时间状语3)现在完成时可表示持续到现在的动作或状态,动词一般是延续性,如live, teach, learn, work, study, know.过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。举例:I saw this film yesterday.(强调看的动作发生过了。)I have seen this film.(强调对现在的影响,电影的内容已经知道了。)Why did you get up so early?(强调起床的动作已发生过了。)Who hasn"t handed in his paper?(强调有卷子,可能为不公平竞争。)She has returned from Paris.她已从巴黎回来了。She returned yesterday.她是昨天回来了。He has been in the League for three years.(在团内的状态可延续)He has been a League member for three years.(是团员的状态可持续)He joined the League three years ago.( 三年前入团,joined为短暂行为。)I have finished my homework now.---Will somebody go and get Dr. White?---He"s already been sent for.句子中如有过去时的时间副词(如 yesterday, last, week, in 1960)时,不能使用现在完成时,要用过去时。(错)Tom has written a letter to his parents last night.(对)Tom wrote a letter to his parents last night.用于现在完成时的句型1)It is the first / second time…. that…结构中的从句部分,用现在完成时。It is the first time that I have visited the city.It was the third time that the boy had been late.2)This is the… that…结构,that从句要用现在完成时.This is the best film that I"ve (ever) seen.这是我看过的最好的电影。This is the first time (that) I"ve heard him sing.这是我第一次听他唱歌。典型例题---No, this is the first time I ___ here.was B. have been C. came D. am coming答案B. This is the first time 后面所加从句应为现在完成时,故选B。---No, it"s the first time I ___ here.even, come B. even, have come C. ever, come D. ever, have come答案D. ever意为曾经或无论何时,反意词为never,此两词常用于完成时。 This is the largest fish I have ever seen. It is / was the first time +that-clause 的句型中,从句要用完成时。注意:非延续性动词的否定形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。(错)I have received his letter for a month.(对)I haven"t received his letter for almost a month.比较since和forSince 用来说明动作起始时间,for用来说明动作延续时间长度。I have lived here for more than twenty years.I have lived here since I was born..My aunt has worked in a clinic since 1949.Some new oilfields have been opened up since 1976.I have known Xiao Li since she was a little girl.My brother has been in the Youth League for two years.I have not heard from my uncle for a long time.注意:并非有for 作为时间状语的句子都用现在完成时。I worked here for more than twenty years.(我现在已不在这里工作。)I have worked here for many years.(现在我仍在这里工作。)小窍门:当现在完成时+一段时间,这一结构中,我们用下面的公式转化,很容易就能排除非延续动词在完成时中的误使。(对) Tom has studied Russian for three years.= Tom began to study Russian three years ago, and is still studying it now.(错) Harry has got married for six years.= Harry began to get married six years ago, and is still getting married now.显然,第二句不对,它应改为 Harry got married six years ago.或 Harry has been married for six years.2since用法编辑1) since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。I have been here since 1989.2) since +一段时间+ agoI have been here since five months ago.3) since +从句Great changes have taken place since you left.Considerable time has elapsed since we have been here.4) It is +一段时间+ since从句It is two years since I became a postgraduate student.延续动词与瞬间动词1) 用于完成时的区别延续动词表示经验、经历; 瞬间动词表示行为的结 果,不能与表示段的时间状语连用。He has completed the work.他已完成了那项工作。 (表结果)I"ve known him since then. 我从那时起就认识他了。(表经历)2)用于till / until从句的差异作为延续动词一般用于肯定句,表示"做……直到……" 作为瞬间动词一般用于否定句,表示"到……,才……"He didn"t come back until ten o"clock.他到10 点才回来。He slept tll ten o"clock.他一直睡到10点。典型例题1. You don"t need to describe her. I ___ her several times.A. had met B. have met C. met D. meet答案B. 首先本题后句强调对现在的影响,我知道她的模样,你不用描述。再次,several times告知为反复发生的动作,因此用现在完成时。2.---I"m sorry to keep you waiting.---Oh, not at all. I ___ here only a few minutes.A. have been B. had been C. was D. will be答案A. 等待的动作由过去开始,持续到现在,应用现在完成时。练习题21.写出下列单词的过去式、过去分词arrive _________ _________brush _________ __________send _________ _________write _________ __________hear _________ __________fall _________ __________drop_________ __________lose _________ __________feel _________ __________lose__________ __________use _________ __________wear _________ _________think________ __________thank_________ _________own _________ __________invent ________ _________build _________ _________allow _________ __________2. 用单词的适当形式填空1).- _____ you ______(write )your letter yet ? – Yes, I _______ (write ) it last night .2)- Jim ____________ ( not finish ) his homework yet .When _______ he ________(finish ) it? - Maybe tomorrow .3) -I ________ never _______ (be) to America before . What about you ? -I _________ (go) there last year .4) –Where is your father ? -He _______ (go ) to Beijing . He ________ (leave ) five days ago . 5)-I"m sorry to keep you waiting here.-Oh, it doesn"t matter . I ________ (be) here for only a few minutes . 6) We will wait here until another bus _______ (come ) .7) –Have you finished your homework ,Tom ? – Not yet . I _________ (do) it now . 8)- When ______ you ______ (plant ) the tree ? – Last year.9) I don"t know if Mary ________ (come) .If she _______ (come), I"ll tell her what to do . 10)- _____ you _____ (go) and ______ (see) a film with me tonight ? -No, I won"t . I _______ (see) it already .11) We ______ (hold) a meeting yesterday . And there ________ (be) another one tomorrow . 12)- Who _____ (win ) the men"s football match ? – We did .13) The students of Grade Three ________ (learn) more than 2000 English words so far . 14)- How long _____ your grandfather _____ (be ) dead ? – For two years . He ______ (die ) the year before last .15)- _____ you _____ (read ) this book before ? –Yes ,I ______ (read ) twice . 16) It ______ (be) five days since he ______ (leave ) his hometown . 17) I ______ (wait )you for a long time . Where _____you _____ ( be) ?18) All the children _______ (enjoy )themselves now .Some ______ (sing ) , some ______ (dance ), others _______ (play ) games .19) China _______ (send ) many man-made satellites into the space in the last three years . 20) When I ______ (leave ) school a moment ago ,it ________ (rain ) hard . 21) Don"t watch TV until your homework ________ (do) . 22) He ________just ______ (travel) to foreign countries .23) We _________ ( not see) each other since we ________ ( leave ) middle school.24) While I _______ (walk) on the road last night , I ______ (meet) an old friend of mine . 25)- ______ your mother ever______ (watch) such a film ? – No, never.3.转变句型1) He joined the army two years ago . He ______ ______ ______ the army _____ two years . 2) The man bought a new car last month . The man ______ ______ a new car ______ last month . 3) The baby fell asleep five minutes ago . The baby _______ ______ asleep _____ five minutes . 4) They opened the shop last week . The shop ______ ______ _______ for a week .5) Tom borrowed the books yesterday . Tom ______ ______ the books for only one day . 6) The film began half an hour ago . The film ______ _______ ______ for half an hour .7) She became a League member last year . She _____ ______ a League member _____ last year. 8) The girl left her hometown ten years ago .The girl _____ _____ ____ _____her hometown for ten years . 9) I got to know him three years ago . I_____ _____ him ______ three years . 10) We began to learn English two years ago . We ____ ____ English ____ two years ago [1]2023-08-04 14:27:301
现在完成时怎么用
现在完成时(Present perfect)过去发生并且已经完成的动作对现在造成影响或后果,过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态。ps:百度百科(http://baike.baidu.com/view/191047.htm#1)说的蛮详细的2023-08-04 14:27:392
现在完成时
分类: 教育/科学 >> 外语学习 解析: Present Perfect 现在完成时 现在完成时的基本构成方式是用动词have加上过去分词。它是用来表达过去发生事情的另一种方式。 He has studied English and French. 他学习过英语和法语。 I have read many books. 我读过很多书。 通常一个动词的过去分词和他的过去式是一样的,但是有一些动词的过去分词有不规则的形式。 be been go gone e e run run swim swum fly flown see seen speak spoken do done give given hide hidden bee bee take taken get gotten / got break broken shake shaken wake waken awake awaken rise risen lay lain fall fallen begin begun know known fet fotten write written choose chosen drink drunk eat eaten bite bitten show shown She has fotten her name. She has amnesia. 她已经忘记了自己的名字。她有健忘症。 I have already drunk the coffee. 我已经喝过咖啡了。 They have gone to see the President. 他们已经去见校长了。 She has e to see you. 她来看过你了。 当have被用在现在完成时态中时,它可以和前面的代名词一起组成缩写形式。 I"ve been to New York once before. 我曾经到过纽约。 He"s gone to the fish market. 他已经去过鱼市了。 We"ve e to help. 我们已经提供了帮助。 现在完成时用not来表达否定形式。当有not出现的时候,have可以和not组成缩写,但是此时不能和前面的代名词组成缩写。 She hasn"t spoken to him. 她还没和他说过话。 We"ve not spoken with her. 提问的时候,have需要被提到句首。 Have you seen Matthew? 你见过马休了么? 简单过去时和现在完成时在一定程度上有共同之处,当然事实上两者之间有本质区别。当需要指明过去一个特定的时刻发生的事情时,需要使用简单过去式。 He finished three days ago. 他三天前做完了工作。 They finished a long time ago. 他们老早就完成工作了。 当没有特定指明的时间,现在完成时和简单过去时都可以使用。 I have already finished. 我早就完工了。 I already finished. 我早就完工了。 简单过去时比现在完成时更能表达事情的结果。 John has taught math for enty years. 约翰已经教了20年的数学。 John taught math for enty years. 约翰教了20年数学。 在上面的句子中,第一句保留了约翰继续教数学的可能性。第二句表明约翰已经不再教数学了,他可能退休了,换工作了,或者去世了。 Steve and Carol have eaten at that restaurant ice. They really like it. 史蒂文和卡洛尔已经在那家饭店吃过两次饭了。他们真的喜欢那里。 Steve and Carol ate at that restaurant ice. 史蒂文和卡洛尔两次在那家饭店吃饭。 如果一件事情发生在过去并且延续到说话的这个时刻,就需要使用现在完成时。 They have lived here for a long time. 他们在这里已经生活了很长一段时间。 She has been in Australia for o years. 她到澳大利亚已经两年了。 We have studied for 5 hours straight. 我们已经连续学习了5个小时。 Tim has waited for 30 minutes. 蒂姆已经等了30分钟了。 下面的句子包含了“动作在过去发生并且已经结束”的含义。 They lived here for a long time. 他们在这里住了很长一段时间 Melissa waited for 30 minutes. 梅丽莎等了30分钟。 通常当句子里有since时我们使用现在完成时。 We have lived here since June. 我们从六月份开始就住在这里。 She has been in China since last month. 她从上个月起就在中国了。 当现在完成时前有might时,就算主格是第三人称单数形式,我们还是使用have的动词原型形式。 She might have fotten to lock the door. 她可能忘记了关门。 He might have given the painting to someone. 他可能已经把画给别人了。 Should、could、must没有简单过去时.他们用现在完成时来表达过去的状态。 He should have told you earlier. 他应该早点告诉你的。 I should have tried harder. 我应该更努力的。 She could have been nicer. 她可以做得更好的。 You must have seen him. 你一定已经见过他了。2023-08-04 14:27:591
现在完成时的用法是什么?
现在完成时(Presentperfect)过去发生并且已经完成的动作对现在造成影响或后果,过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态。句型:基本结构:主语+have/has+动词的过去分词(p.p)(V-ed)e.gdone ①肯定句:主语+have/has+动词的过去分词(p.p)(V-ed)+宾语. ②否定句:主语+have/has+not+动词的过去分词(p.p)(V-ed)+宾语. ③一般疑问句:Have/Has+主语+动词的过去分词(p.p)(V-ed)+宾语. ④特殊疑问句:特殊疑问词或词组+一般疑问句(have/has+主语+过去分词(V-ed)+其他)定义:(1)强调动作是从过去持续到现在,并有可能继续持续下去。 (2)强调对现在的影响或结果,此用法容易和一般过去时混淆。两者的区别是:一般过去时有动作发生的时间点,即过去某一时间发生某一动作;现在完成时则没有,即不强调是哪个时间点发生的动作,而强调过去的动作对现在造成的影响和结果。 (3)在过去不确定的时间里发生的动作,但是结果对现在有影响。 但过去分词一定要选择准确。 时间状语:recently,lately,since...for...,inthepastfewyears。ect.规则动词 1、规则动词:规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则: 现在完成时态-中小学教育资料(1)、一般动词,在词尾直接加“ed”。 work---worked---worked,visit---visited---visited(2)、以“e”结尾的动词,只在词尾加“d”。 live---lived---lived, (3)、以“辅音字母+y”结尾的动词,将"y"变为"i",再加“ed”。 study---studied---studied,cry---cried---cried (4)、重读闭音节结尾,末尾只有一个辅音字母,先双写该辅音字母,再加“ed”。 stop---stopped---stopped,drop---dropped--dropped2023-08-04 14:28:082
现在完成时不可以用什么提问
不可以用did、does、do来提问。现在完成时态的一般疑问句都是have或者has+主语+过去分词+其他。不能用一般时态的疑问句方式同等处理。现在完成时态是由“have或has+过去分词”构成,主要有两个含义。1、表示动作发生在过去,但与现在的情况有联系,有时无时间状语,有时和一些表示不确定的过去时间状语连用。2、表示从过去某一时间开始一直延续到现在并还可能继续延续下去的动作,用于延续性动词,且句中常带有表示一段时间的时间状语。2023-08-04 14:28:231
现在完成时态1得be动词用啥时态
be 动词的现在进行时:am /is /are being 一般现在时:am /is/ are 现在完成时:have/has been 一般将来时:shall/ will be 过去进行时:was/were being 过去完成时:had been2023-08-04 14:28:321
为什么要用现在完成时?
语言的作用是表达自己的意思。因为约定成俗,所以对方也能理解你的意思。当你想讲过去发生的事情,对现在还有影响,就要用现在完成时。因为这个结构约定成俗,人家听到这个时态知道你就是这个意思。比如说:I have eaten. 这是现在完成时。当你这样告诉别人的时候,你的意思就是我之前吃过了,并且现在还是吃饱的状态,不想再吃了。如果你说 I ate. 一般过去时。听起来的意思就是,之前吃过,那现在要不要吃呢?天知道呢,你又没说。2023-08-04 14:28:391
现在完成时态的单词如何变化
have been done动词一般变成过去分词形式!2023-08-04 14:28:563
什么时候,现在完成时态用have/has been+~~~~?
后面应该加过去式,表示现在完成且延续.2023-08-04 14:29:213
现在完成时的标志词
1.for + 一段时间2.in/during/ever+ the+ 一段时间3.since当 自从 来讲时4. 次数 once/twice/three times...many times5.already before yet recently ever by2023-08-04 14:29:314
什么叫现在完成时?
表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在.2023-08-04 14:30:014