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为什么是somebody have picked it up而不是somebody must has picked it up

2023-07-18 14:06:43
TAG: has body it have
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  因为must是情态动词,后面必须用动词原形,是不能用has的,has是have的第三人称单数形式。
  somebody have picked it up意思是某人已经去把它捡起来了。

  must的用法:
  1. 表示“必须”、“一定要”
  (1) 可用于肯定句、否定句或疑问句;用于否定句时,mustn"t 的意思是“一定不要的意思是“”、“不能”,而不是“不必”。如:You must finish it today. 你一定要在今天完成它。
  You must see the doctor. 你一定要看医生。
  Must you go so soon? 你一定得这么早就走吗?
  We mustn"t think only of ourselves. 我们可不能只考虑自己。
  (2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to)。如:She asked if she must (had to) leave. 她问她是否一定要离开。她问她是否一定要离开。
  (3) 对于must 开头一般疑问句,若要作否定回答,可用needn"t,不用mustn"t。如:"Must I come over tonight?" "No, you needn"t." “我今晚必须过来吗?”“不必。”
  (4) 其后可接被动结构或进行形式。如:Something must be done to stop it. 必须采取措施来阻止它。I think I must be going. 我想我得走了。
  2. 表示推测意为“准是”、“一定是”,注意以下几点。如:
  (1) 通常只用于肯定句,在否定句或疑问句用 can 代之。如:It must be true. 那一定是真的。那一定是真的。比较。如:Can it be true? 那可能是真的吗? / It can"t be true. 那不可能是真的。
  (2) 后接动词原形,表示对现在情况的推测。如: He must be wrong. 他一定错了。The man must have a lot of money. 这个人一定有不少钱。
  【注】must 表示对现在情况的推测后接动词原形时,该动词通常为状态动词(如 be, have, know 等),若为动作动词,通常要转换其他说法。如要表示“他一定会赢”,通常不说He must win,可说He is sure to win。(He must win的意思是“他必须要赢”)他必须要赢
  (3) 其后可接进行式或完成进行式,用以谈论一个正在进行的动作。如:He must be writing a letter to his girl friend. 他一定在给他女朋友写信。Someone must have been smoking here.一定有人一直在这里抽烟。
  (4) 后接完成式,用来谈论已发生的情况。如:He must have arrived already.他一定已经到了。I didn"t hear the phone. I must have been asleep. 我没有听到电话铃,我一定是睡着了。
  3. 表示“应当”相当于should, ought to的意思。如:
  You must say hello to her.你应当跟她打个招呼。
  We must go and have a weekend there.我们应当到那里度周末。
  4. 表示“偏偏”有时表示不巧,有时表示固执,通常都是指令人不快的事。如:
  Must you make so much noise? 你就非得弄出这么大的声音吗?
  Why must you always interrupt me? Why must you always interrupt me? 你为什么硬是老要打断我?
  We were ready to leave, but the baby must catch cold. 我们刚准备好要走, 可孩子偏偏得了感冒。
  Just when I was busy, the neighbor must come and chatter. 正当我忙碌的时候,邻居偏偏过来聊天。
肖振

somebody has picked it up 有人捡起来了

或者

somebody must have picked it up 肯定有人捡起来了

it must be是什么句型

it 是形式主语,真正的主语是to eat ice cream in summer的不定式.英语中当不定时作主语时常用it来代替以避免头重脚轻.must be表示推测,肯定是的意思.
2023-07-18 02:51:421

情态动词表推测,为什么指人时还用it must be

it 是指示代词,must be表示 一种可能性,因为不知道是男性还是女性,所以用的it代替
2023-07-18 02:51:523

There must be 和It must be有什么区别??急急!!

There must be 肯定有 It must be它一定是
2023-07-18 02:52:025

itmustbesomeonedoing中doing用法

doing表示某人/某物正在做。比如,itmustberainingoutside.
2023-07-18 02:52:302

it must be the cold weather making me ill为什么用making

因为前面已经有了谓语be,而且冷天让我生病是主动的,所以make必须得用谓语动词making.
2023-07-18 02:52:414

it must be terrible to be grown up 为什么要加第二个be 这个be是什么意思??

你好,知道认证外语行家为你解答。这个句型是itmustbe形容词todosomething第一个be是跟着must走的,must作为情态动词,之后必须用be动词原型。你肯定已经知道了。第二个be是充当do的位置。这个be相当于become,是实意动词,不是be动词,意思是“成为”。“成为一个大人(长大)一定是件恐怖的事情。”希望对你有帮助:-)
2023-07-18 02:52:521

为什么用 it

it 表示的that woman这个整体。
2023-07-18 02:53:219

It must be him.可不可以说It must be he.讲出理由

1. 一般都用: It must be him.英语语法规定:如果人称代词单独做主语/表语时,则一般用宾格而不用主格.再如:-Who are you? --It"s me, Mike.--I like football. --Me, too.2. 除非是一个强调句型的完整句子,且该代词...
2023-07-18 02:53:371

it must be _____(interest)

interesting
2023-07-18 02:53:575

it must be Maria. 为什么要用it?

英语中对未知身份的人表示猜测时通常用It表示。
2023-07-18 02:54:123

it must be fun 为什么用must be 不用单独用must 或者单独用be

你用华文完全翻译的,英文不可以这样
2023-07-18 02:54:202

It must be ********

你好,你的句子是强调句。以下是非强调句:I am sure that something that happens to those winter-born children accounts for their faring poorly. 然后,it must be ------(第二个) that-----是强调句结构,something做主语,不是宾语。第一个that是定语从句的连接词,做主语,修饰something, happen to sb.===发生在某人身上, those winter-born children 做happen to 的宾语,accounts for their faring poorly做something的谓语和宾语。must be 解释为---- 肯定,一定,表推测,在强调句中作谓语 还有,something在你的句子里做must be的表语,在非强调句中做主语。 明白了吗?
2023-07-18 02:54:291

it must be+名词能不能做主语从句?

还没有ST名师目前他不能做主语从句的。
2023-07-18 02:54:382

it must be .改为一般疑问句

it must be some bananas,aren"t they?
2023-07-18 02:54:471

It must be him.对吗?可不可以说It must be he.讲出理由

1. 一般都用: It must be him.英语语法规定:如果人称代词单独做主语/表语时,则一般用宾格而不用主格。再如:-Who are you? --It"s me, Mike.--I like football. --Me, too.2. 除非是一个强调句型的完整句子,且该代词即为在强调句型中为被强调的主语。如:It must be he who/that stole your car yesterday.昨晚一定是他偷了你的车子。
2023-07-18 02:54:551

There must be 和It must be有什么区别?

其中 must 是情态动词,是没有区别的。余下的就是 there be 和 it be 的区别了;there be 表示某个地方会出现或存在什么事物;it be 表示某个事物会出现什么性质。
2023-07-18 02:55:021

it must be the wind

答案:freezing. 分析句子结构可知,第一个句子为强调句型,第二个句子需要一个形容词来作表语,表示天冷的结果,所以使用形容词freezing;故答案为freezing.
2023-07-18 02:55:101

it must be worry还是worried

是worried。worry和worried的区别是worry既是名词,又是动词。从时态方面讲,worried是worry的过去式,从主被动方面讲,worry是主动式,worried是被动式,动词的被动式be+这个单词的过去形式,be worried about表示一个状态,而worry about表示一个动作,就像 determine to do sth和 be determined to do sth的用法一样。worry的基本意思是使困扰,使烦恼,指不停地非难、刺激以致破坏某人平静的心境或使其感到绝望或受挫,强调企图或效果。worry也可表示担心,为什么发愁。worry可用作不及物动词,也可用作及物动词。用作及物动词时,接名词、代词、that/wh-从句作宾语,还可接以动词不定式或形容词充当补足语的复合宾语。
2023-07-18 02:55:161

must的用法?

must 表示猜测:1. must do/be:e.g. you must like singing, don"t you? You must be a doctor, aren"t you?2. must have donee.g. you must heve met him, didn"t you ?3. must be doinge.g. you must be reading a book, are you?
2023-07-18 02:55:369

英语情态动词must用法

你好! 1. 表示“必须”、“一定要”(1) 可用于肯定句、否定句或疑问句;用于否定句时,mustn"t 的意思是“一定不要的意思是“”、“不能”,而不是“不必”。如:You must finish it today. 你一定要在今天完成它。You must see the doctor. 你一定要看医生。Must you go so soon? 你一定得这么早就走吗?We mustn"t think only of ourselves. 我们可不能只考虑自己。(2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to)。如:She asked if she must (had to) leave. 她问她是否一定要离开。她问她是否一定要离开。(3) 对于must 开头一般疑问句,若要作否定回答,可用needn"t,不用mustn"t。如:"Must I come over tonight?" "No, you needn"t." “我今晚必须过来吗?”“不必。”(4) 其后可接被动结构或进行形式。如:Something must be done to stop it. 必须采取措施来阻止它。I think I must be going. 我想我得走了。2. 表示推测意为“准是”、“一定是”,注意以下几点。如:(1) 通常只用于肯定句,在否定句或疑问句用 can 代之。如:It must be true. 那一定是真的。那一定是真的。比较。如:Can it be true? 那可能是真的吗? / It can"t be true. 那不可能是真的。(2) 后接动词原形,表示对现在情况的推测。如: He must be wrong. 他一定错了。The man must have a lot of money. 这个人一定有不少钱。【注】must 表示对现在情况的推测后接动词原形时,该动词通常为状态动词(如 be, have, know 等),若为动作动词,通常要转换其他说法。如要表示“他一定会赢”,通常不说He must win,可说He is sure to win。(He must win的意思是“他必须要赢”)他必须要赢(3) 其后可接进行式或完成进行式,用以谈论一个正在进行的动作。如:He must be writing a letter to his girl friend. 他一定在给他女朋友写信。Someone must have been smoking here.一定有人一直在这里抽烟。(4) 后接完成式,用来谈论已发生的情况。如:He must have arrived already.他一定已经到了。I didn"t hear the phone. I must have been asleep. 我没有听到电话铃,我一定是睡着了。3. 表示“应当”相当于should, ought to的意思。如:You must say hello to her.你应当跟她打个招呼。We must go and have a weekend there.我们应当到那里度周末。4. 表示“偏偏”有时表示不巧,有时表示固执,通常都是指令人不快的事。如:Must you make so much noise? 你就非得弄出这么大的声音吗?Why must you always interrupt me? Why must you always interrupt me? 你为什么硬是老要打断我?We were ready to leave, but the baby must catch cold. 我们刚准备好要走, 可孩子偏偏得了感冒。Just when I was busy, the neighbor must come and chatter. 正当我忙碌的时候,邻居偏偏过来聊天。 若满意,请采纳!若有疑问,欢迎追问!
2023-07-18 02:56:161

must用来表示什么?

1. 表示“必须”、“一定要”(1) 可用于肯定句、否定句或疑问句;用于否定句时,mustn"t 的意思是“一定不要”、“不能”,而不是“不必”:You must finish it today. 你一定要在今天完成它。You must see the doctor. 你一定要看医生。Must you go so soon? 你一定得这么早就走吗?We mustn"t think only of ourselves. 我们可不能只考虑自己。(2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to):She asked if she must (had to) leave. 她问她是否一定要离开。(3) 对于must 开头一般疑问句,若要作否定回答,可用needn"t,不用mustn"t:"Must I come over tonight?" "No, you needn"t." “我今晚必须过来吗?”“不必。”(4) 其后可接被动结构或进行形式:Something must be done to stop it. 必须采取措施来阻止它。I think I must be going. I think I must be going. 我想我得走了。2. 表示推测。意为“准是”、“一定是”(1) 通常只用于肯定句,在否定句或疑问句用 can 代之:It must be true. 那一定是真的。It must be true. 比较:Can it be true? 那可能是真的吗? / It can"t be true. 那不可能是真的。(2) 后接动词原形,表示对现在情况的推测: He must be wrong. 他一定错了。The man must have a lot of money. 这个人一定有不少钱。注:must 表示对现在情况的推测后接动词原形时,该动词通常为状态动词(如 be, have, know 等),若为动作动词,通常要转换其它说法。“他一定会赢”,通常不说He must win,可说He is sure to win。(He must win的意思是“他必须要赢”) (3) 其后可接进行式或完成进行式,用以谈论一个正在进行的动作:He must be writing a letter to his girl friend. 他一定在给他女朋友写信。Someone must have been smoking here.一定有人一直在这里抽烟。(4) 后接不定式的完成式,用来谈论已发生的情况:He must have arrived already.他一定已经到了。I didn"t hear the phone. I must have been asleep. 我没有听到电话铃,我一定是睡着了。3. 表示“应当”。相当于should, ought to的意思You must say hello to her.你应当跟她打个招呼。We must go and have a weekend there.我们应当到那里度周末。4. 表示“偏偏”有时表示不巧,有时表示固执,通常都是指令人不快的事:Must you make so much noise? 你就非得弄出这么大的声音吗?Why must you always interrupt me? 你为什么硬是老要打断我?We were ready to leave, but the baby must catch cold. 我们刚准备好要走, 可孩子偏偏得了感冒。Just when I was busy, the neighbor must come and chatter. 正当我忙碌的时候,邻居偏偏过来聊天。
2023-07-18 02:56:311

it must be late是虚拟语气吗?

这不是虚拟语气,这是用情态动词must 表示对现在的肯定推测。you must be very tired after working hard 虚拟通常用would. Could. 等构成。If I were you I would do the same.
2023-07-18 02:56:521

must be i miss you什么意思

一定是我想你
2023-07-18 02:57:005

语法it must be paid attention to

it must be paid attention to这句是对的, 一定要保证 pay attention to 的完整性pay attention to 注意No attention was paid to his advice.他的建议没有引起注意。
2023-07-18 02:57:166

It must be your book,的反义疑问句

isn"t it?
2023-07-18 02:57:345

请教英语语法 I think it must be he who did it. 这里为何用he,而不用宾格him

后半句有点像强调句的结构,只是把it was he改成了it must be he. 如果是it was he who did it就是典型的强调句,但也可以说it must be he who did it.
2023-07-18 02:57:501

怎么填 ?为什么?It must be fun, ( )? (反意疑问句)

答案是:isn"tis 当must做情态动词表示推测判断的意思时,反义疑问句应该随着must后面的单词的变化而变化,本句可以理解为:Ithinkitisfun,isn"tit? 其他的比如:he musthaveseenthemovie,hasn"the?他必定看过这部电影,不是吗?~手工翻译,尊重劳动,欢迎提问,感谢采纳!~
2023-07-18 02:57:591

it must be morning,____ the birds are singing

for,结果 for 原因
2023-07-18 02:58:194

Who ------it be? It must be Mr.Wang A may B must C might D can

D 语气回答是肯定,前面也要相应的
2023-07-18 02:58:277

It must be a什么?是chicken还是horse还是trick还是treat

单独的话,都可以
2023-07-18 02:58:424

It must be my.这句话对不对啊?是my还是mine?

It must be mine!肯定是我的!It must be me!肯定是我!这才是对的!
2023-07-18 02:58:492

~~~~It must be fun.和It must be funny.的区别

fun也是形容词
2023-07-18 02:58:593

it must be karen marsh

这里的场景 有可能是 说话者没看到 这个人,只是猜测,这时候就必须用It .比如有人在外面敲门,主人会问,who is it? 专业八级为您服务.
2023-07-18 02:59:061

It must /might / can’t /could be sb其中的英语知识

这些词汇同属于情态动词, 其后加动词原形。can and could表示能力和客观可能性。may and might表示允许和请求。must通常为need的肯定形式,can"t是can的否定形式。might and could 皆表示过去式,语气较弱,也同样表示虚拟语气,例如,明天他可能会来。he might come tomorrow。用might而不是will may。
2023-07-18 02:59:151

求高手帮我解释下这两句英语.1.It must be terrible to be grown up.(这个to be?

1."长大一定是很恐怖/惨的了." to be=成为,是 grown up=长大成人了 因为是be terrible to do something,所以要用be作为动词. 2."可是这些是下星期三的表演要用的." for=为了 不可以去掉,因为如果去掉了,意思就变成"可是他们是下星期三的表演",扭曲了原意.,9,1. 做大人肯定一点都不好玩 (在孩子的眼里) to be:成为 it 是先行代词,代短语 to be grown up 句子也可以写成这样:To be grown up must be terrible 2. 最好结合上下文看是 “但它们是用于下星期三演出的”、还是“但他们是为下星期三演出的” for:为......目的,在这里不能去掉...,2,应该是1. It must be terrible to be a grown-up 吧。 grown-up是一个合拼词, 是成人的意思。 那这句话是, 要当大人一定很可怕 。 2。 for 是为了什么的意思。 这句里不可以去掉。 并且这句子结构是 主语 + 谓语 + 介词 句子意思是, 但是他们是为了下星期三的表演的。...,1,求高手帮我解释下这两句英语. 1.It must be terrible to be grown up.(这个to be grown up到底怎样理解啊?为什么要用to be?) 2.“but they"re for next wednesday‘s performance.”(中间为什么要用for,可以去掉吗?)
2023-07-18 02:59:211

it must be her还是hers为什么

it must be her还是hers为什么hers 是名词性物主代词这里要用名词性物主代词,所以用hersit must be her还是hers为什么hers 是名词性物主代词这里要用名词性物主代词,所以用hers
2023-07-18 02:59:282

it must be terrible to be grown up.

不是,是实际主语。形式主语是it.实际上就是To be grown up must be terrible.it is ...+不定式,有两类用法,容易搞混。一种是主语it做形式主语而不定式是实际主玉语,另一种是主语it实际上是不定式的宾语而不定式做主补修it。It is hard to do .这里不定式是做主补,属于后一种。
2023-07-18 02:59:381

it must be fun 为什么用must be 不用单独用must 或者单独用be

因为句子结构的问题,这句不能去掉be,因为be为动词作谓语。可以说itisfun。可是意思变了。而且mustbe还是固定配搭,表示必须;一定;一定是;必须是
2023-07-18 02:59:581

it+must+be后怎么加代词?

回答如下:be动词后面应该跟宾格人称代词。例如:It must be him. 肯定是他。
2023-07-18 03:00:041

It Must Be? 歌词

歌曲名:It Must Be?歌手:刘若英专辑:听说?It Must Be?手机带错拿成遥控器 没充电的相机想绑马尾没有橡皮筋我迷迷糊糊刚睡醒为了准时 遇见你的出现 像是简讯随时提醒one two Falling in love就算言不及义没有话题 错过一部约会电影three four 不用太在意It must be good (要让你明白)我的爱情 是待你流览网站Oh come on show me12345…12345…my baby和我恋爱带我去101看夜景 教我长北极星一路上塞车也没关系多放几首更精彩的秘密one two Falling in love就算没有逻辑不合格规律 也能下载你的心情three four 不用太神秘it must be good (拥有你的爱)我的爱情 是等你上线状态Oh come on show me12345…12345…my baby 和我恋爱it must be goodhttp://music.baidu.com/song/2077767
2023-07-18 03:00:121

it must be terrible to be grown up 为什么要加第二个be 这个be是什么意思??

你好,知道认证外语行家为你解答。这个句型是it must be 形容词 to do something第一个be是跟着must走的,must作为情态动词,之后必须用be动词原型。你肯定已经知道了。第二个be是充当do的位置。这个be相当于become,是实意动词,不是be动词,意思是“成为”。“成为一个大人(长大)一定是件恐怖的事情。”希望对你有帮助 :-)
2023-07-18 03:00:201

什么情况下肯定推测用it must be 什么情况下用he/she must be

Most of times, it does not matter. When dealing with subjects emphasizing events or things, "it must be" would be better. When dealing with persons, "he/she must be" could be the best. It must be true that hybrids use less gas because most people are buying the hybrids when the gas price going up.He must be right that his wife gave birth to a boy because he was there when his wife delivered the baby. It must be true when he said he got a son because he was there when his wife gave a birth to his first baby.
2023-07-18 03:00:291

英语翻译1.It must be pointed out that it is one of our basic Sta?

1.必须指出的是,这是我们的基本状态政策,控制人口增长,提高人口素质. 2.它估计,世界人口可达到6000000000年底的世纪. 3.它必须牢记的是没有秘密的成功是努力工作. 4.从这里可以看出,不会有困难我们可以征服世界. 5.人是劳动的产物众所周知. 6.它是一种常见的说法,有明确目标的人一定会成功的. 7.很明显,敌人是没有和平的愿望. 8.难以想象爱迪生是怎么工作管理二十小时的每一天. 9.很难说这一计划是否可行. 10.毫无疑问的是,别人也会来帮助你如果你有任何困难. 11.他们无疑已经取得了一系列实验. 12.据说蝙蝠使用雷达已经有数百万年. 13.说实话,我们犯的许多错误可能避免. 14.我们知道,但直到最近的问题解决了. 15.必须承认,你已经做了什么答应做. 16.在我看来,这是不同的一个你看到. 17.可以肯定的是我们还有很长的路要走. 18.这一切都表明,没有什么可以阻止我们达到我们的目的. 19.据我们所知,他用了一年多写的书. 20.它已被证明,每种物质,不管是什么是的,都是由原子构成的. 21.我们已经决定要建立一个铁路的基地内必须完成的那一年. 22.这是明显的(明显),成功的创新取决于我们共同的努力. 23.坦率地说,无论你喜不喜欢它,你没有其他选择. 24.这是自然的,有可能有麻烦复杂的思想简单的英语. 25.更为重要的是,他们的协议谈判正在进行. 26.我们会成功,只要我们坚持不懈. 27.坦白地说,你所说的真理不适用这里所发生的事. 28.这是真的,我们必须加倍努力;否则我们不能赶上发达国家. 29.我想当然地认为他们会支持这个想法. 30.在某种意义上,一个成功的科学家他从不满足于自己已取得的成就.,8,1.必须指出的是,它是我国的一项基本国策,控制人口增长,提高人口素质。 2.这是(已经)估计,世界人口将达到60亿,到本世纪末。 3.一定要记住的是成功的秘密是努力地工作。 4.可以看出,世界上任何困难我们都能克服。 5。正如我们所知,人是劳动的产物。 6。俗话说:为自己设定目标的人肯定会成功的 7。很明显,敌人没有渴望和平的愿望。 8。很难...,0,英语翻译 1.It must be pointed out that it is one of our basic State policies to control population growth while raising the quality of the population. 2.It is (has been) estimated that the worlds population could reach 6 billion by the end of the century. 3.It must be kept in mind that there is no secret of success but hard work. 4.It can be seen from this that there is no difficulty in the world we can overe. 5.As is known man is the product of labor. 6.It is a mon saying that man who has a settled purpose will surely succeed. 7.It is clear that the enemy has no desire for peace. 8.It is hard to imagine how Edison managed to work twenty hours each day. 9.Its hard to say whether the plan is practicable. 10.There is no doubt that others will help you if you have any difficulties. 11.It seems certain that they have made a series of experiments. 12.It is said that bats have been using radar for millions of years. 13.To tell the truth,many mistakes we made could have been avoided. 14.As we know,it was not until recently that the problem was solved. 15.It must be admitted that you havent done what you promised to do. 16.In my opinion,this puter is different from that one you saw. 17.It is certain that we have a long way to go. 18.All this shows that nothing can prevent us from reaching our aims. 19.As far as we know,it took him more than a year to write the book. 20.It has been proved that every substance,no matter what it is,is made up of atoms. 21.It has been decided that we are going to build a railway whose base must be pleted within his year. 22.It is obvious (evident) that the success of the innovation depends on our concerted efforts. 23.To be frank,whether you like it or not,you have no other choice. 24.It is natural that one may have trouble expressing plicated ideas in simple English. 25.What is more important,the agreement they have negotiated is being carried out. 26.We will be successful as long as we persevere. 27.Frankly speaking,what you call the truth may not apply to things happening here. 28.It is true that we must redouble our efforts; otherwise we cannot catch up with the developed countries. 29.I take it for granted that they will support this idea. 30.In a certain sense,a successful scientist is a person who is never satisfied with what he has achieved.
2023-07-18 03:00:361

it must be lost

D 表示比较肯定的推断 must have done 这个就是“它肯定是丢了”,但着仍然是自己的推测.
2023-07-18 03:00:431

it must be terrible to be grown up 为什么要加be 这个be是什么意思??

请注意此句中的grown up,在有的场合是grown-up,词性是名词,意思是“成年人”。所以介词to和名词之间必须要加系动词be。不然属于语法错误。这就是为何要加be的意义。关键就是对grown up的理解。
2023-07-18 03:00:592

must的用法介绍

  下面是我为大家介绍关于情态动词must的用法,欢迎大家学习:   一、must表示“必须”、“一定要”   (1) 对于must 开头一般疑问句,若要作否定回答,可用neednu2019t,不用mustnu2019t:   "Must I come over tonight?" "No, you neednu2019t." “我今晚必须过来吗?”“不必。”   (2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to):   She asked if she must (had to) leave. 她问她是否一定要离开。   (3) 其后可接被动结构或进行形式:   Something must be done to stop it. 必须采取 措施 来阻止它。   I think I must be going. 我想我得走了。   (4) 可用于肯定句、否定句或疑问句;用于否定句时,mustnu2019t 的意思是“一定不要”、“不能”,而不是“不必”:   You must finish it today. 你一定要在今天完成它。   You must see the doctor. 你一定要看医生。   Must you go so soon? 你一定得这么早就走吗?   We mustnu2019t think only of ourselves. 我们可不能只考虑自己。   二、must表示“应当”   相当于should, ought to的意思:   You must say hello to her.你应当跟她打个招呼。   We must go and have a weekend there.我们应当到那里度周末。   三、表示“偏偏”   有时表示不巧,有时表示固执,通常都是指令人不快的事:   We were ready to leave, but the baby must catch cold. 我们刚准备好要走, 可孩子偏偏得了感冒。   Just when I was busy, the neighbor must come and chatter. 正当我忙碌的时候,邻居偏偏过来聊天。   Must you make so much noise? 你就非得弄出这么大的声音吗?   Why must you always interrupt me? 你为什么硬是老要打断我?   四、must表示推测   其意为“准是”、“一定是”,注意以下几点:   (1) 通常只用于肯定句,在否定句或疑问句用 can 代之:   It must be true. 那一定是真的。   比较:Can it be true? 那可能是真的吗? / It canu2019t be true. 那不可能是真的。   注意:must 表示对现在情况的推测后接动词原形时,该动词通常为状态动词(如 be, have, know 等),若为动作动词,通常要转换其他说法。如要表示“他一定会赢”,通常不说He must win,可说He is sure to win。(He must win的意思是“他必须要赢”)   (2) 其后可接进行式或完成进行式,用以谈论一个正在进行的动作:   He must be writing a letter to his girl friend. 他一定在给他女朋友写信。   Someone must have been smoking here.一定有人一直在这里抽烟。   (3) 后接动词原形,表示对现在情况的推测:   He must be wrong. 他一定错了。   The man must have a lot of money. 这个人一定有不少钱。   (4) 后接完成式,用来谈论已发生的情况:   He must have arrived already.他一定已经到了。   I didnu2019t hear the phone. I must have been asleep. 我没有听到电话铃,我一定是睡着了。   五、must 与 have to 的区别   (1) 时态形式不同:must 只有现在时一种形式(在宾语从句中可以表示过去),而 have to则有多种时态形式:   He said (that) she must go with me. 他说她必须同我一起去。   She had to go there on foot yesterday. 昨天她不得不步行去那儿。   They have had to buy a car. 他们不得不买了辆小汽车。   (2) 强调重点不同:两者都表示“必须”,但 must 侧重于说话者的主观看法,认为有必要或有义务去做某事;have to则重于客观需要,含有“不得不”或“被迫”之意:   We must go at once. 我们必须马上就走。   If I buy that car, Iu2019ll have to borrow some money. 如果我要买那辆汽车, 我得借些钱。   (3) 否定式的意义不同:must 的否定式 mustnu2019t 意为“一定不要”、“不允许”;而 have to 的否定式 donu2019t have to 意为“不必”(=neednu2019t)。比较:   You mustnu2019t tell him about it.你一定不要告诉他这件事。(这可能是秘密)   You neednu2019t tell him about it.你不必告诉他这件事。(他可能知道了)   (4) have to可以有分词、动名词、不定式等形式,而must则没有这些形式:   He only saw her in the evening, having to be away all day. 他整天得外出,只能晚上见她。   I regret to have to trouble you again. 我很抱歉不得不再麻烦你一次。
2023-07-18 03:01:071

— Who is singing in the next room? — _____ must be Marie.

选D
2023-07-18 03:01:444

must可以表推测吗?

1. 表示“必须”、“一定要”(1) 可用于肯定句、否定句或疑问句;用于否定句时,mustn"t 的意思是“一定不要”、“不能”,而不是“不必”:You must finish it today. 你一定要在今天完成它。You must see the doctor. 你一定要看医生。Must you go so soon? 你一定得这么早就走吗?We mustn"t think only of ourselves. 我们可不能只考虑自己。(2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to):She asked if she must (had to) leave. 她问她是否一定要离开。(3) 对于must 开头一般疑问句,若要作否定回答,可用needn"t,不用mustn"t:"Must I come over tonight?" "No, you needn"t." “我今晚必须过来吗?”“不必。”(4) 其后可接被动结构或进行形式:Something must be done to stop it. 必须采取措施来阻止它。I think I must be going. I think I must be going. 我想我得走了。2. 表示推测。意为“准是”、“一定是”(1) 通常只用于肯定句,在否定句或疑问句用 can 代之:It must be true. 那一定是真的。It must be true. 比较:Can it be true? 那可能是真的吗? / It can"t be true. 那不可能是真的。(2) 后接动词原形,表示对现在情况的推测: He must be wrong. 他一定错了。The man must have a lot of money. 这个人一定有不少钱。注:must 表示对现在情况的推测后接动词原形时,该动词通常为状态动词(如 be, have, know 等),若为动作动词,通常要转换其它说法。“他一定会赢”,通常不说He must win,可说He is sure to win。(He must win的意思是“他必须要赢”) (3) 其后可接进行式或完成进行式,用以谈论一个正在进行的动作:He must be writing a letter to his girl friend. 他一定在给他女朋友写信。Someone must have been smoking here.一定有人一直在这里抽烟。(4) 后接不定式的完成式,用来谈论已发生的情况:He must have arrived already.他一定已经到了。I didn"t hear the phone. I must have been asleep. 我没有听到电话铃,我一定是睡着了。3. 表示“应当”。相当于should, ought to的意思You must say hello to her.你应当跟她打个招呼。We must go and have a weekend there.我们应当到那里度周末。4. 表示“偏偏”有时表示不巧,有时表示固执,通常都是指令人不快的事:Must you make so much noise? 你就非得弄出这么大的声音吗?Why must you always interrupt me? 你为什么硬是老要打断我?We were ready to leave, but the baby must catch cold. 我们刚准备好要走, 可孩子偏偏得了感冒。Just when I was busy, the neighbor must come and chatter. 正当我忙碌的时候,邻居偏偏过来聊天。
2023-07-18 03:01:511

itmustbeworry还是worried

是worried。worry和worried的区别是worry既是名词,又是动词。从时态方面讲,worried是worry的过去式,从主被动方面讲,worry是主动式,worried是被动式,动词的被动式be+这个单词的过去形式,beworriedabout表示一个状态,而worryabout表示一个动作,就像determinetodosth和bedeterminedtodosth的用法一样。worry的基本意思是使困扰,使烦恼,指不停地非难、刺激以致破坏某人平静的心境或使其感到绝望或受挫,强调企图或效果。worry也可表示担心,为什么发愁。worry可用作不及物动词,也可用作及物动词。用作及物动词时,接名词、代词、that/wh-从句作宾语,还可接以动词不定式或形容词充当补足语的复合宾语。
2023-07-18 03:01:581

it+must+be+his什么意思?

must be肯定、一定,整句翻译就是:(这个东西)肯定是他的。
2023-07-18 03:02:131