arctanx的导数怎么求

arctanx求导推导：y=arctanx，x=tany，dx/dy=secy=tany+1，dy/dx=1/(dx/dy)=1/(tany+1)=1/(1+x)。求导是数学计算中的一个计算方法，它的定义就是，当自变量的增量趋于零时，因变量的增量与自变量的增量之商的极限。在一个函数存在导数时，称这个函数可导或者可微分。可导的函数一定连续。不连续的函数一定不可导。基本函数的求导公式：1、y=c(c为常数) y"=0；2、y=x^n y"=nx^(n-1)；3、y=a^x y"=a^xlna；4、y=e^x y"=e^x；5、y=logax y"=logae/x；6、y=lnx y"=1/x；7、y=sinx y"=cosx；8、y=cosx y"=-sinx；9、y=tanx y"=1/cos^2x；10、y=cotx y"=-1/sin^2x；11、y=arcsinx y"=1/√1-x^2；12、y=arccosx y"=-1/√1-x^2；13、y=arctanx y"=1/1+x^2；14、y=arccotx y"=-1/1+x^2。

设x=tany那么tany"=sex^y那么arctanx"=1/(tany)"=1/sec^y所以sec^y=1+tan^y=1+x^2则(arctanx)"=1/(1+x^2)

首先结果是 1/(1+x^2)推导过程x=tany对x求导1=y"*sec^2y=>y"=1/sec^2y=1/(tan^2y+1)=1/(x^2+1）觉得好请采纳 不懂可以追问

到底是 y/arctanx 还是 arctan(y/x) 啊？前者的导数等于 1/arctanx，后者的导数等于 (1/x) / [1+(y/x)^2] = x / (x^2+y^2) 。

arctanx的导数：y=arctanx，x=tany，dx/dy=secy=tany+1，dy/dx=1/(dx/dy)=1/(tany+1)=1/(1+x)。 扩展资料 　　求导公式： 　　1、C"=0(C为常数)； 　　2、(Xn)"=nX(n-1) (n∈R)； 　　3、(sinX)"=cosX； 　　4、(cosX)"=-sinX； 　　5、(aX)"=aXIna （ln为自然对数)； 　　6、(logaX)"=1/(Xlna) (a>0，且a≠1)； 　　7、(tanX)"=1/(cosX)2=(secX)2

题目若 y 是 x 的函数， 应有 arctan(y/x) = ？ ， 构成方程才对头。

y=arctan(x/a)我先推导一下正切函数的求导公式，咳咳，因为忘了。我只记得复合函数求导法则和正余弦导数。现在来推吧。tan(x)"={sin(x)×[1/cos(x)]}"=cos(x)×[1/cos(x)]+sin(x)×[-1/cos^(2)(x)]×[-sin(x)]=1+tan^(2)(x)，不要化简成sec^(2)(x)了，那样不好算。继续求题目所求。tan(y)=x/atan(y)"=(x/a)"[1+tan^(2)(y)]×y"=1/ay"=(1/a)/[1+(x/a)^2]=a/[a^(2)+x^(2)]

如下图，供参考。

y = arctan(ax)tany = ax(secy)^2 y" = ay" = a/(secy)^2= a/(1+(ax)^2)扩展资料常用导数公式：1、y=c(c为常数) y"=02、y=x^n y"=nx^(n-1)3、y=a^x y"=a^xlna，y=e^x y"=e^x4、y=logax y"=logae/x，y=lnx y"=1/x5、y=sinx y"=cosx6、y=cosx y"=-sinx7、y=tanx y"=1/cos^2x

1.(atctanx)"=1/(tany)"=1/sec^2y=1/(1+tan^2y)=1/(1+x^2)利用反函数求导法则2.lim(h-->0)(arctan(x+h)-arctanx)/h3.令arctan(x+h)-arctanx=u,tanu=h/[1+(x+h)x]h=(1+x^2)tanu/(1-xtanu)4.=limu(1-xtanu)/(1+x^2)tanu=1/(1+x^2)5.tanu等价uarctangent（即arctan）指反正切函数，反正切函数是反三角函数的一种，即正切函数的反函数。一般大学高等数学中有涉及。

arctanx求导推导：y=arctanx，x=tany，dx/dy=secy=tany+1，dy/dx=1/(dx/dy)=1/(tany+1)=1/(1+x)。求导是数学计算中的一个计算方法，它的定义就是，当自变量的增量趋于零时，因变量的增量与自变量的增量之商的极限。在一个函数存在导数时，称这个函数可导或者可微分。可导的函数一定连续。不连续的函数一定不可导。基本函数的求导公式：1、y=c(c为常数) y"=0；2、y=x^n y"=nx^(n-1)；3、y=a^x y"=a^xlna；4、y=e^x y"=e^x；5、y=logax y"=logae/x；6、y=lnx y"=1/x；7、y=sinx y"=cosx；8、y=cosx y"=-sinx；9、y=tanx y"=1/cos^2x；10、y=cotx y"=-1/sin^2x；11、y=arcsinx y"=1/√1-x^2；12、y=arccosx y"=-1/√1-x^2；13、y=arctanx y"=1/1+x^2；14、y=arccotx y"=-1/1+x^2。

(atctanx)"=1/(tany)"=1/sec^2y=1/(1+tan^2y)=1/(1+x^2) 利用反函数求导法则lim(h-->0)(arctan(x+h)-arctanx)/h令arctan(x+h)-arctanx=u ,tanu=h/[1+(x+h)x] h=(1+x^2)tanu/(1-xtanu)=limu(1-xtanu)/(1+x^2)tanu=1/(1+x^2)tanu等价uArctangent（即arctan）指反正切函数，反正切函数是反三角函数的一种，即正切函数的反函数。一般大学高等数学中有涉及。

arctanx求导推导：y=arctanx，x=tany，dx/dy=secy=tany+1，dy/dx=1/(dx/dy)=1/(tany+1)=1/(1+x)。求导是数学计算中的一个计算方法，它的定义就是，当自变量的增量趋于零时，因变量的增量与自变量的增量之商的极限。在一个函数存在导数时，称这个函数可导或者可微分。可导的函数一定连续。不连续的函数一定不可导。基本函数的求导公式：1、y=c(c为常数) y"=0；2、y=x^n y"=nx^(n-1)；3、y=a^x y"=a^xlna；4、y=e^x y"=e^x；5、y=logax y"=logae/x；6、y=lnx y"=1/x；7、y=sinx y"=cosx；8、y=cosx y"=-sinx；9、y=tanx y"=1/cos^2x；10、y=cotx y"=-1/sin^2x；11、y=arcsinx y"=1/√1-x^2；12、y=arccosx y"=-1/√1-x^2；13、y=arctanx y"=1/1+x^2；14、y=arccotx y"=-1/1+x^2。

arctanx求导推导：y=arctanx，x=tany，dx/dy=secy=tany+1，dy/dx=1/(dx/dy)=1/(tany+1)=1/(1+x)。求导是数学计算中的一个计算方法，它的定义就是，当自变量的增量趋于零时，因变量的增量与自变量的增量之商的极限。在一个函数存在导数时，称这个函数可导或者可微分。可导的函数一定连续。不连续的函数一定不可导。基本函数的求导公式：1、y=c(c为常数) y"=0；2、y=x^n y"=nx^(n-1)；3、y=a^x y"=a^xlna；4、y=e^x y"=e^x；5、y=logax y"=logae/x；6、y=lnx y"=1/x；7、y=sinx y"=cosx；8、y=cosx y"=-sinx；9、y=tanx y"=1/cos^2x；10、y=cotx y"=-1/sin^2x；11、y=arcsinx y"=1/√1-x^2；12、y=arccosx y"=-1/√1-x^2；13、y=arctanx y"=1/1+x^2；14、y=arccotx y"=-1/1+x^2。

arctanx的导数：y=arctanx，x=tany，dx/dy=secy=tany+1，dy/dx=1/(dx/dy)=1/(tany+1)=1/(1+x)。 扩展资料 　　1、导数的四则运算（u与v都是关于x的函数） 　　（1）（u±v）"=u"±v" 　　（2）（u*v）"=u"*v+u*v" 　　（3）（u/v）"=（u"*v-u*v"）/v 　　2、导数的基本公式 　　C"=0（C为常数）、（x^n）"=nx^(n-1)、（sinx）"=cosx、（cosx）"=-sinx、（tanx）"=secx、（secx）"=tanxsecx 　　3、求导例题 　　（1）y=4x^4+sinxcosx，则（y）"=（4x^4+sinxcosx）" 　　=（4x^4）"+（sinxcosx）" 　　=16x^3+（sinx）"*cosx+sinx*（cosx）" 　　=16x^3+cosxx-sinxx 　　=16x^3+cos2x 　　（2）y=x/（x+1），则（y）"=（x/（x+1））" 　　=（x"*（x+1）-x*（x+1）"）/（x+1） 　　=（（x+1）-x）/（x+1） 　　=1/（x+1）

arctanx求导推导：y=arctanx，x=tany，dx/dy=secy=tany+1，dy/dx=1/(dx/dy)=1/(tany+1)=1/(1+x)。求导是数学计算中的一个计算方法，它的定义就是，当自变量的增量趋于零时，因变量的增量与自变量的增量之商的极限。在一个函数存在导数时，称这个函数可导或者可微分。可导的函数一定连续。不连续的函数一定不可导。基本函数的求导公式：1、y=c(c为常数) y"=0；2、y=x^n y"=nx^(n-1)；3、y=a^x y"=a^xlna；4、y=e^x y"=e^x；5、y=logax y"=logae/x；6、y=lnx y"=1/x；7、y=sinx y"=cosx；8、y=cosx y"=-sinx；9、y=tanx y"=1/cos^2x；10、y=cotx y"=-1/sin^2x；11、y=arcsinx y"=1/√1-x^2；12、y=arccosx y"=-1/√1-x^2；13、y=arctanx y"=1/1+x^2；14、y=arccotx y"=-1/1+x^2。

1、反三角函数求导公式反正弦函数的求导：(arcsinx)"=1/√(1-x^2)反余弦函数的求导：(arccosx)"=-1/√(1-x^2)反正切函数的求导：(arctanx)"=1/(1+x^2)反余切函数的求导：(arccotx)"=-1/(1+x^2)2、反三角函数负数关系公式arcsin(-x)=-arcsin(x)arccos(-x)=π-arccos(x)arctan(-x)=-arctan(x)arccot(-x)=π-arccot(x)3、反三角函数倒数关系公式arcsin(1/x)=arccsc(x)arccos(1/x)=arcsec(x)arctan(1/x)=arccot(x)=π/2-arctan(x)(x＞0)arccot(1/x)=arccot(x)=π/2-arccot(x)(x＞0)arccot(1/x)=arctan(x)+π=3π/2-arccot(x)(x＜0)4、反三角函数余角关系公式arcsin(x)+arccos(x)=π/2arctan(x)+arccot(x)=π/2arcsec(x)+arccsc(x)=π/2

arctan求导方法：设x=tanytany"=secx^yarctanx"=1/(tany)"=1/sec^ysec^y=1+tan^y=1+x^2所以(arctanx)"=1/(1+x^2)反函数的导数与原函数的导数关系设原函数为y=f(x)，则其反函数在y点的导数与f"(x)互为倒数（即原函数，前提要f"(x)存在且不为0）反函数求导法则如果函数x=f(y)x=f(y)在区间IyIy内单调、可导且f′(y)≠0f′(y)≠0，那么它的反函数y=fu22121(x)y=fu22121(x)在区间Ix={x|x=f(y)，y∈Iy}Ix={x|x=f(y)，y∈Iy}内也可导，且[fu22121(x)]′=1f′(y)或dydx=1dxdy[fu22121(x)]′=1f′(y)或dydx=1dxdy这个结论可以简单表达为：反函数的导数等于直接函数导数的倒数。例：设x=siny，y∈[u2212π2,π2]x=sinu2061y，y∈[u2212π2,π2]为直接导数，则y=arcsinxy=arcsinu2061x是它的反函数，求反函数的导数.解：函数x=sinyx=sinu2061y在区间内单调可导，f′(y)=cosy≠0f′(y)=cosu2061y≠0因此，由公式得(arcsinx)′=1(siny)′(arcsinu2061x)′=1(sinu2061y)′=1cosy=11u2212sin2yu2212u2212u2212u2212u2212u2212u2212u2212√=11u2212x2u2212u2212u2212u2212u2212√=1cosu2061y=11u2212sin2u2061y=11u2212x2

根据题意，有：y=arctanxdy/dx=1/(1+x^2)。这个反正切函数的导数是基本导数公式，需要熟记。

arctan（即Arctangent）指反正切函数。反函数与原函数关于y=x的对称点的导数互为倒数。设原函数为y=f(x)，则其反函数在y点的导数与f"(x)互为倒数（即原函数，前提要f"(x)存在且不为0）。arctanx求导方法：令y=arctanx，则x=tany。对x=tany这个方程“=”的两边同时对x求导，则（x）"=（tany）"1=sec2y*（y）"，则（y）"=1/sec2y又tany=x，则sec2y=1+tan2y=1+x2得，（y）"=1/（1+x2）即arctanx的导数为1/（1+x2）。

　　你的旅行是怎样度过的呢?有没有一次旅行令你比较难忘的呢?大家不妨写一篇60词的英语描述一下吧。以下是我推荐的难忘的旅行 英语 作文 ，供大家参考。 　　难忘的旅行英语作文篇一 　　I went to an English Summer Camp this summer vacation. It"s really a good chance to improve my English. 　　I ate, lived, learnt and played with my foreign teachers and my classmates for about three weeks. In the morning, we had a four-hour-class. 　　In the afternoon, sometimes we saw an English movie, otherwise we learned some English songs. 　　In the evening, we had our free time. We all had a lot of fun. 　　难忘的旅行英语作文篇二 　　On July 23rd my parents took me to Beijing.We stayed at YuTingqiao hotel.On the first day,we went to the Great Wall. 　　The Great Wall is very long and old.It has millions of bricks. 　　Each brick is very big and heavy.Lots of people from different countries like climbing the Great Wall. 　　We felt very tired when we climbed to the top of the Great Wall. 　　The following days,we went to the Summer Palace,,North Lake and Xiang Hill. 　　I know more about the history of China.I also like modern Beijing. 　　Later,I went back with my parents by plane.I really enjoyed the trip to Beijing. 　　难忘的旅行英语作文篇三 　　It was a sunny day.We decided to have a picnic outside the city.In the morning,we took a early bus to nanhui. 　　It was quite a colorful world.There were green trees,orange leaves,red peaches. 　　At noon we sat by the river bank and took out a lot of things,such as bread,orange juice,apples,cakes,eggs and so on.Unluckily,it began to rain. 　　We had to take a bus to go back home in a hurry. What an unforgettable picnic it was! 　　难忘的旅行英语作文篇四 　　I went to Beidaihe beach with my parents last summer. 　　It took us about three hours to get there by bus.We went swimming in the sea,went fishing and boating. 　　We also walked on the beautiful beach and buit a sand castle.We had different kinds of sea food there.People there were friendly to us. 　　So I really had a wondful and unforgetble trip. 　　难忘的旅行英语作文篇五 　　An Unforgetble Trip 　　I went to Yunnan Provice with my parents last Summer vacation.We spent a week there.We visited Kunming,Dali and Lijiang. 　　We climbed Xishan Mountain,visited the Stone Forest,went to the Flower Market,went boating on Eihai Lake and so on. 　　We also tasted the delicious food like the crossing bridge noodles.It was really a wonderful trip. 　　And I would never forget it.旅行英语作文相关推荐： 1. 旅游日记英语作文5篇 2. 关于旅游的英语作文范文 3. 出国旅游英语作文 4. 一次旅行英语作文4篇 5. 关于旅游的高中英语作文4篇

　　My good habits　　　　I also have a lot of habits. Let me talk about my good habits. I don"t watch too much TV. You know, it is bad for our eyes. Especially if you sit in front of the TV. Let"s go on. Please show your smile every day. Smiling is a good way to be healthy. It makes us glad. That"s why I like smiling very much. Then listen to me. I also save up money. Most children spend all their pocket money because they don"t know how much their parents work. Don"t waste it any longer. I used to drink a lot of soft drinks in the past. Now I drink at least eight glasses of water every day. The water is the most important thing in the world. The last thing is to do anything carefully. I usually cross the road when the ‘Green Man" is on ,it is safe. Unluckily , too many people lost their lives in traffic accidents. What a pity!　　

　　家乡，是追随我一生记忆的梦。那么关于我的家乡的 英语 作文 60词有哪些呢?以下是我为大家整理的，有关我的家乡英语作文60词，希望大家喜欢。 　　我的家乡英语作文篇一 　　My hometown is in Lianjiang. It is a city in the state of Guangdong. 　　The people here are mostly fruit farmers。Some of them work in the rice cooker industry.It is also one of the largest and most developed county in GuangDong. 　　Lianjiang is a traditional agricultural county. I live in one of the small town here in. 　　我的家乡英语作文篇二 　　I live in yushan. it"s a quite community. 　　Ther are mang old people living here .mang families with yong children live here and mang students live here ,too.There are a lot of tall buildings and small gardens in my community .My home is nan apartment building. 　　There are mang stores close to my home.the bank near pharmacy. 　　我的家乡英语作文篇三 　　My hometown has changed a lot.In the past the streets were dirty but they are quite clean now. 　　And today"s hometown is rather different from that of the past for example,the traffic was terrible in the past,but it"s safe now. 　　In a word,with the lead of the CPC.my hometown has been becoming more and more beautiful! 　　我的家乡英语作文篇四 　　My hometown is very beautiful, people want to stay here forever. 　　Get up every morning, we can see the smoke-filled lake, the sun shines on the top, the sparkling shine. 　　In my hometown, the most beautiful autumn.Every autumn, the maple leaf has become its mainstream.Fruit trees in front of the dolphin family but also to bear the full fruit. 　　I love home. 　　我的家乡英语作文篇五 　　My hometown used to be a backward place, because it was deep in the mountains, where there were no nice buildings and the roads were so narrow and dirty. People lived a poor life. While in recent years, with the development of society, my hometown has been greatly changed. Now the roads are getting much wider. 　　There are many different cars and buses running on the roads. Trees and flowers are planted on the two sides of the roads. 　　They can provide us with oxygen and fight against the pollutants. So the sky becomes cleaner and brighter. 　　What"s more, you can see many modern and beautiful buildings everywhere, and the living conditions are improving. 　　People are enjoying a comfortable life now. 　　我的家乡英语作文篇六 　　My hometown is Guiyang,a small city in Southwest China,surrounded by rolling green mountains.A river runs through it,with locust trees lining along both banks. 　　In Spring the locust trees all blossom at the same time,spreading the delicate fragrance all around the city. 　　In Summer there will be little boats floating on the river,the laughter of children resonating with the sound of the running water. 　　I was born and grew up in the city,and I"m very affectionate to it.It rains a lot,but the climate is very mild,neither too cold nor too hot throughout the year. 　　It is small and not very prosperous,but people there are warm-hearted and straightforward.The life pace there is slow and peaceful.It"s a good place for spending hot summer days. 　　That is my hometown.I love her deeply from the bottom of my heart.我的家乡英语作文60词相关推荐： 1. 我的家乡英语作文及翻译 2. 介绍我的家乡英语作文5篇 3. 我的家乡英语作文 4. 介绍动物英语作文60词 5. 我的家乡英语作文带翻译

exp代表的意思就是国外的日期。国外的日期是从小到大和中国相反，最先说的号，再说月，最后说年。1、Expirydate［ikˈspaiərideit］缩写为EXP，意思是失效期，有效期。Exp．date或Expixydate；Expirationdate；Expiring。这三组外文标志都是表示失效期。3、几个常用的标志和识别：Exp＝Expirydate到期日的简称。Usebefore或Useby在以前使用。Validity有效期。Duration有效期。Stability稳定期。Storagelife贮存期限。4、保质期是指产品在规定的贮藏条件下的质量保证期限。保质期一般在产品的外包装上，消费者容易看到的地方，一般食品、药品、护肤品、日用品等都会有保质期。5、在保质期内，产品的生产企业对该产品质量符合有关标准或明示担保的质量条件负责，销售者可以放心销售这些产品，消费者可以安全使用。扩展资料：英文日期书写格式注意事项：1、在写当年年份时必须完全写明，不可用＂16代替2016；2、书写月份时，必须用全英文的形式写出或者采用大家熟知的简写形式。3、书写年份和月日时，必须在年份和月日之间加上逗号，月日之间需要注意美式还是英式写法，逗号也有所不同；4、在日期的表达上，可用序数词，如：1st，2nd，3rd，4th，5th，．．．，当然也可以使用基数词，例如简单的：1，2，3，4，5．．．。一般在美式中大都采用基数词；5、完全用数字表达日期的时候我们也要注意，如7／8／2016，针对不同的国家采用不同的格式。按美国人习惯，上述日期为2016年7月8日，而按英国习惯则是2016年8月7日。参考资料来源：百度百科-药品期限

英语的写法通常与我们的中文相反,写日期时也应该注意顺序:英语日期的写法有两种： （1）先写某日，次写月份，最后写年份。某日用序数词的缩写形式；除May ， June和July三个月份外，其余各月份均可缩写；年份均用阿拉伯数字书写，但不能把“1991”缩写成“91”等。例如： 22nd August 2006 （2）先写月份，次写某日，最后写年份。用这种写法比较普遍。某日用基数词，也可用序数词的缩写形式（必须采用公认的简写），但后边须加逗号。例如： August 22，2006 August 22nd，2006 如果在英语日记的书端里要写星期的话，可将其写在日期的前面或后面。例如： Tuesday，August 22nd，2006 August 22nd ，2006，Tuesday总的说：日期表达有多种形式。年、月、日都写时，通常以月、日、年为顺序，月份可以缩写，日和年用逗号隔开。例如： December 18, 2003 或者 Dec. 18, 2003 September 1, 2004或September 1st, 2004也可省略写成Sept. 1, 2004或Sept. 1st, 2004；B)the 1st of September in 2004

英语作文有：1、People always confuse about the meaning of happiness, they don’t know how to define it. 人们总是对幸福的意义感到困惑，他们不知道如何去定义。2、Once I read the story that the little eagles needed to practice flying in the cliff before they could fly.曾经我读到一个故事，小鹰需要在会飞前在悬崖上练习飞翔。3、My father is busy all the time, he always goes out very early and then goes home after very late. 我的爸爸一直很忙，他总是早出晚下班。4、Recently, the live show is very popular, especially the show about the father how to get along with their children.最近，真人秀很流行，特别是有关父亲如何与他们孩子相处的节目。5 、Last night, I read the news about a professor who wrote the paper 20 years ago. 昨晚，我阅读了一则新闻关于一位教授20年前写的一篇论文。6、When I am making mistakes, my parents will never be angry with me.当我犯错误的时候，父母从来不和我生气。7、On the New Year’s Eve, after finishing the dinner, for most Chinese people, they will sit at home, watching the Spring Festival Gala with their families. 在除夕夜，吃完晚饭后，对于大部分中国人来说，他们会在家里坐着，和家人观看春晚。8、When I was small, I was taught that we should help others, though it was not our duty, we should take no hesitation to do it. 当我还小的时候，我被教育我们应该帮助别人，虽然那不是我们的责任，但是我们应该毫不犹豫去做。9、We live in a world that surrounded by people, we need to communicate with others, for the purpose of share our emotions and keep survive. 我们生活在一个被人群包围的世界，我们需要和别人进行交流，为了和别人分享我们的情感和在这个世界生存。10、Before I was five years old, my parents gave me what I wanted, but as I became bigger, they changed their attitude towards me. 在我五岁以前，我的父母给予我想要的东西，但是随着我长大，他们对待我的态度发生了改变。

我的网友（My Net Friend） I was only nine years old when I learnt how to use a computer. My mother is my first teacher. I know how to type, how to copy a file, and how to visit a web site on the internet. One day, mom was not at home. I turned on the computer and began to learn how to chat on net. The first one I met there was a boy called tom. He greeted me politely. When he knew that I was only a 9-year-old girl, and almost knew nothing about chatting on net, he started showing me how to use the chatting tools, how to download, and how to send e-mails. I learnt a lot from him. 石器时代的人们(Stone Age People) Millions of years ago, people lived in caves. They had fire, which gave them heat and light. They eat raw meat. It was time for lunch. The father was very hungry. He was eating some raw meat. He gave the boy some raw meat. The boy threw the raw meat into the fire. The father was very angry. He said, “You are a bad boy! Eat this meat.” the father gave it to the boy. The boy tasted the meat. It tasted nice. He ate the cooked meat. He said, “I like this meat. it tastes good.” after that, the stone age family always cooked their food on the fire 修理电视机(repairing a TV set) On the eve of spring festival, people were making dumplings while watching TV. But suddenly our TV set didn"t work. Father was so anxious that he went to uncle lees. He felt glad to help and came with some tools. 除夕之夜,家家都在高兴地包饺子看电视.突然,我们家的电视坏了.这可急坏了爸爸,他急忙请隔壁的李叔叔帮忙.李叔叔欣然应允. After a moment he fixed the set. Our whole families were so pleased that we asked him to taste some dumplings of ours. 他带着工具,不一会儿就把电视机修好了.我们全家都很高兴,热情地请他吃饺子.上学路上(on the way to school） This morning, my father took me to school by bike. I sat at the back of the bike, eating a banana. After I ate it up, I threw the skin onto the street randomly. 今天早晨,爸爸骑车带我去上学.我坐在后车座上,吃着香蕉.吃完后,我顺手将香蕉皮扔到了街上. No sooner had I done this than I realized that I had done something bad to our environment. And maybe someone would step on it and tumble over. I must pick it up. Thinking of these, I asked father to stop. I jumped off the bike and ran back to pick up the banana skin and threw it into a roadside dustbin. Seeing this, father praised me and I felt very happy. 我马上意识到我的所作所为破坏了我们的环境,或许有人会踩在上面而跌倒,我必须把它拾起来.想到这些,我让爸爸停车.我跳下自行车,跑回去拾起香蕉皮,并扔到了路边的垃圾箱里.看到这些,爸爸表扬了我.我感到很高兴. In future I will protect the surroundings more consciously and think more about others. 将来我要更自觉地保护周围的环境,更多地为他人着想.网上英语聊天(chat in English on the internet) I am greatly interested in chatting on the net, especially in English. I still remembered the first time when I logged on the legend web site and met a girl called "orange”. 我非常喜欢网上聊天,尤其是英语聊天.我仍然记得第一次登录联想网站并在“英语沙龙”聊天室遇见“橘”姑娘的情景.我们谈了一些有趣的话题. We chatted about some interesting topics. I think I can practice my English well this way. 我想我可以通过这一方法练习英语.我的新牙刷(my new toothbrush) 　　oh! my god. my toothbrush was broken last sunday. i couldn"t brush my teeth. so i went shopping with my mother. there were so many tooth brushes. 　　finally we chose a blue one. there is a blue bird in it. it made in guangzhou. it is ten yuan. it"s too expensive. but it is so beautiful. and i like it very much. so we bought it. my mother said that it is good for my teeth. then we went home. i can brush my teeth now. how happy i am! 父亲给我的礼物 When I was young,my father ,who always taught me how to be a true man,told me that it is essential to be tolerant in your life whatever happens. And that remains the most valuable present he gave me,I think To be tolerant, I need to keep calm when great trouble lies in front of me,however difficult it is to overcome it; To be tolerant ,I need to resist the temptation of all kinds of the outside world,even if it is so attractive; To be torlerant, I need to pull myself(控制自己情绪) in times of extreme sorrows and joys, no matter how they affect me. Summer Camp On Saturday, we went camping, with our teachers. First we pitched the tent. then our older brothers and older sisters played game with us. At noon, we all had a delicious lunch followed by a barbecue for dinner. At night, we had bonfire and sang and danced. We didn"t sleep until 10:20 at night. But some of the boys were so noisy we couldn＇t fall alseep. I only slept for three hours. the next morning, everybody woke up very early. After exercising in the morning, we all went to see the small pigs. On the way there, we saw a lot of geese. At 10:00, we went back to eat ice cream. It was so cold. then, we all played games together. We ate lunch at 12:00. In the afternoon, we played musical instruments and sang. After that, camp was over. We had a lot of fun at the summer camp. I am looking forward o going to another summer camp soon. Reading Is a Good Hobby With development of science and technology, new knowledge comes every day. If you stop learning even for a day,you will be lost. Reading is a good way to help you keep in touch with the outside world. Read widely and you"ll be rich in knowledge. Reading is also a good way to relax yourself. You can get a lot of fun in the books. A good book is a good friend to comfort you when you are unhappy. So long as you have a good book at hand, you"ll never feel lonely. Every valuable book will open a new world before you. A piano player（我的理想） What do I want to do when I"m older? Someone wants to be a doctor. Someone wants to be a basketball player because they are good at sport. Someone wants to be a writer and to make the writing. Someone wants to be a teacher because they like teaching children. I like playing the piano and I good at it. So I want to become a piano player. Play the piano is very interesting. And you can learn something of music. Piano can make you like music. A lot of musician and singer are love playing piano. I play the piano when I"m ten years old. Now I"m in grand five. I hope when I"m sixteen years old , I can become grand eight. I"ll be harder and harder to practise. Become a piano play is a hard job. But I believe I can do it.

The Spring Festival is very important to Chinese people. In the past，people could not often have meat，rice or other delicious food. They could only eat these during the Spring festival. So every year they hoped that the Spring Festival would come soon. Now， although people‘s life is much better，and we can eat the delicious foods everyday. People still like the festival. Because most people can have a long holiday，and we are free to go on a trip or visit our friends or have parties with our family. In the evenings，we can have a big meal in the restaurant or stay at home with family and watch the TV programs.I like the Spring Festival very much. How wonderful the Spring Festival is！春节对中国人来说非常重要。在过去，人们往往没有肉，大米或其他美味的食物吃。他们通常只能在春节吃到这些。所以每年他们都希望春节可以快点来。现在，虽然人们的生活好多了，我们每天都可以吃美味的食物。人们仍然喜欢的春节。因为大多数人可以有一个很长的假期，我们可以自由地去旅行或拜访我们的朋友或与我们的家人聚会。晚上，我们可以在餐厅大吃一顿，或与家人留在家里看电视节目。我非常喜欢春节。春节是多么的美妙啊！

1、英文日期分英式和美式，英式日期格式：Date,Month,Year；美式日期格式：“Month,Date,Year”。 2、具体举例如下： （1）8th March,2004或8 March,2004（英式）； （2）March 8th,2004或March 8,2004（美式）。

日期的书写分为英式与美式两种:1)英式的日期:日/月/年;Day/Month/Year 2)美式的日期:月/日/年;Month/Day/Year 拓展资料:①英式日期读写方式:eg. 2018年5月13日 1) 书写: 英式日期先写日期,后写月份

you can take the 99 bus from airport and get off to library .after you conniue walking,wait a moment can see the , ﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋

英语作文，60~80词，要求在内。 你好这位同学，感谢你对英语牛人团的信任，我们在此响应你的作文求助。 由于我不大清楚你的暑假是怎么过的（哈哈），只能瞎编一点内容了，就是学生们一般暑假都会做的事情。绝对正确+地道的手工作文如下： My summer vacation is filled with exciting experiences. At the very beginning of the summer, my parents took me on a trip to Yunnan. We all loved the Lijiang Old Town, especially their delicious foods! Following the trip, I spent about o weeks on my homework. Afterwards, I signed up for a piano class. Since then I"ve been practising playing the piano for 2 hours every day. 一共67个单词。如果哪里需要解释说明欢迎你随时追问。 希望我的解答对你有帮助，祝你暑假愉快，学习进步 :-) 汶川地震的英语作文要求在60至80词 The thoughts of Wenchuan Earthquake 12th May,is a date that I"ve never fot it.Wenchuan earthquake, the people to disaster areas has caused tremendous physical and mental suffering,but also makes the map as a *** all region,the people throughout the country the most about the place. This is anatural disaster caused by difficult to avoid thetragedy, it is sad, Human nature is no stronger to disaster,and the natural power of human beings exposed pletely. In the earthquake disaster.Wen Jiabao said a word,"As longas both hands,wiu be able to rebuild their homes."thesewords to the real interpretation of the ture meaning of the disaster."Time is life."meaning at this point has been the most vivid expression. No valentine"s love of the natural disasters.In abottle to save the lives of all people,the victory will e after disaster test of the Chinese naturn. 关于电影的一篇英语作文，要求在60～80词～ 在百度上搜索 英语作文，要求在下面。60词，谢谢 实在没本事把字压缩在60词--- 委婉的表达是需要很多“废话”的。你自己再压压看。 May 10, 2012 Dear Madam/Sir， At first, we should apologize for failing to say "Hello" to you personally. But we are rather familiar with your family. Your kid and your pet dog have introduced themselves once and again with the paintings covering our door and appearances in our hall respectively. We have also learnt that you like the programs on TV, for we always hear the loud sound. Moreover we are considering that your apartment must be kept clean as the wastes are frequently thrown out of your door. Let"s take care for each other because we are the people live closest on earth. Best wishes. Sincerely Yours Your neighbors 高中英语作文:《Teenager"s pressure》﹐要求在内文!!! TEENAGER"S PRESSURE Adults always say the most valuable and cheerful time is when they were teenagers, as when you grow up, there are more worries and troubles. However, teenagers also have growing pains and pressures. First, due to the nature of overpopulation, Chinese teenagers have more academic pressure than other countries". There is fierce petition everywhere which forced teenagers to develop and obtain prehensive skills, that is also the reason why many parents paid excessive tutoring for their children. Moreover, there are endless asses *** ents and exercises, especially for students facing university entrance examinations. （课业压力） In addition, nowadays, teenagers have significantly better living conditions since the fast growing of China. They are living in the so-called “information age”, they have an easier aess to every corner of the world via inter. Thus, they are facing the pressure to be too addicted or distracted from these high-tech applications and cannot concentrate on their studies. （新生事物诱惑的压力） Furthermore, teenagers are more precocious than before and they fall in love earlier than their parents" decades. Thus, they face the pressure to deal with their more plicated relationships with friends and lovers. （早熟与早恋的压力） In general, recent teenagers faces more pressures than they used to and it is important for us to know, thus to help them release from these pressures as much as possible. 213个字 瞎编的 希望对你有帮助 英语作文，要求：60-80词，求助信 Maggie： Hi,I am lingling,I am here to asking for your help.last night,I came to a dancing party and weared my sister"s new shoes.I didn"t get her permission to wear her shoes.How unlucky!The shoes was broken and i don`t have enough money to get it repaired. I am afriad to tell my sister this.What can I do??Maybe I can mend it by myself??Please give me some suggests.Thanks a lot. LingLing 刚写完，希望对你有助喔。。 英语作文，要求60词 I have some habbits,some are good,but some are bad. I like reading very much.From reading science books,I get a lot of knowledge.From reading novels,I lose myself in the stories.I like doing sports,too.It helps me keep healthy.Also I never put today"s work till tomorrow.They are all my good habbits.They help me a lot in my daily life. However,I also have some bad habbits.For example,sometimes I do my homework slowly,and stay up till very late.During meals I prefer meat to vegetables.And sometimes I play puter games too long without having a reat.They are all harmful to my health. 建议你下个翻译软体，然后把你的作文编辑进去，会翻译出你要的作文。 希望采纳 求英语作文（60——80字内） As the economy increase, the life is being better than before. The situation that students celebrate their birthdays on restaurants is popular. The problem is that should we students go to a restaurant for our birthday. Some students say yes because it is helpful for improve friendship, and it also gave clas *** ates a chace to municate and relax. However, others against the ideal. The reasons are that it is a waste of money and resource, and it also lead a bad ethos. To conclude, i think we students should not go to a restaurant for our birthday. 一篇初三英语作文：travelling。要求60词至80词 Travelling I love travelling, not only for that I can enjoy the scenery, but I can learn about other places as well. I have gone to many places. While I was in primary school, my parents brought me to Chengdu, Sichuan province. I visit Du Fu"s home there, and learned a lot about the most famous poet in Chinese history. This is just one of my travelling experiences. Travelling is a pleasure for me. 【73 words】

英文日期分英式和美式,如下: 1) 8th March,2004 或8 March,2004（英式） 2) March 8th,2004 或March 8,2004 （美式） 扩展资料 　　日期写法宜遵从下列规则： 　　1)年份必须完全写明,不可用"04代替2004; 　　2)月份必须用英文拼出或采用公认的"简写,January(Jan.),February(Feb.),March(Mar.),April(Apr.),May,June,July,August (Aug.),September(Sept.),October(Oct.),November(Nov.),December(Dec.); 　　3)日期可用序数词,如：1st,2nd,3rd,4th,...；也可用基数词,如：1,2,3,4,.但美式大多采用后者； 　　4)在年份和月日之间必须用逗号隔开； 　　5)日期不可全部采用如7.12.2003或7/12/2003的阿拉伯数字书写,否则会引起误解.因为英美在这方面的习惯用法不同.按美国人习惯,上述日期为2003年7月12日,而按英国习惯则是2003年12月7日.

A travel to ShanghaiAs we know, Shanghai is a famous financial centre of China. It is also a great place for holiday. This summer holiday, I went to Shanghai with my families. We went there by high-speed train. We had a lot of fun there. We saw the Oriental Pearl Tower. We took photos of animals in Shanghai wildlife Park. We went to the Bund. It is known as the "name card" of Shanghai. We ate the famous Nanshan Crab Soup Bun. We also visited the Shanghai Old City God"s Temple. We enjoyed ourselves very much. How wonderful the trip is. I"ll never forget it.

Last sunday. I and my father, mother, grandparents, brother went to bailongshan by bus. In the morning we came down the mountain. I saw wooded mountains, wild flowers bloom. We climb up the hill along the mountain path. Come halfway up the mountain, I feel a little tired，it began to rain,My West Lake silk umbrella missed,. Dad said to me,“tingting， don"t do anything halfway.”at last，So I insisted reached the top, the top of the scenery so beautiful.We were flying kites, I was thirsty, my mother bought me a bottle of water, .finally we went home.finally，Since then, I"ve kept the umbrella。i was very happy

　　英语是一门与日常生活息息相关的科目,其注重日常的实践与应用,其不仅能够提升学生的口语交流能力,对学生写作水平的提升也有极大的作用和帮助。下面，是我为你整理的初中英语作文60字左右，希望对你有帮助! 　　初中英语作文60字左右篇1 　　Hello everyone! My name is Zhang Li, I am twelve years old, and I am in Class four, Grade one. I like playing football, running, swimming and drawing. Yang Hua is my friend, he is my desk mate. He is taller than me. We have the same hobbies. We often play football or go swimming together after school. This is me and my friend. We would like to be your friends too. 　　大家好!我的名字叫张力，我12岁了，我在初一4班。我喜欢踢足球、跑步、游泳和素描。杨华是我的朋友，他是我的同桌。他比我高。我们有相同的爱好。我们放学后经常在一起踢足球。这就是我和我的朋友。我们很乐意也成为你们的朋友。 　　初中英语作文60字左右篇2 　　I get up at seven ou2019clock in the morning every day. After I brush my teeth and wash face, I eat my breakfast. My mother makes the breakfast for me. I go to school at 7:30am, and come back from school at 6 pm. Before I go to bed I will do some homework. I usually go to sleep at 10 pm. On the weekend, I will go to play football with my friends, in the summer we like to go swimming. These are my daily life. 　　我每天早上7点起床。刷牙洗脸之后我就吃早餐，早餐是我妈妈做的。我7：30去学校，下午6点放学。在我上床睡觉之前我会做一些作业。我平时是10点睡觉。周末的时候，我会跟朋友去踢足球，夏天时去游泳。这些就是我的日常生活。 　　初中英语作文60字左右篇3 　　English is very important today, we have English classes in school every day. How do I study English? In the morning before I go to school, I will listen to the English text recording, follow the recording to read the text. And before the class in the school, we will have an English words dictation. After school I will do some English homework. In the evening, before I go to bed, I will listen to the English channel on the radio to improve my listening. I also have some foreign net friends, we can talk in English on line so I can practice my speaking. These are how I study English. 　　在今天英语是很重要的，我们每天都有英语课。我如何学习英语?在早上上学之前，我会听课文录音，跟着读课文。在学校上课之前，我们会有一个英语单词听写。放学后我会做一些英语作业。晚上的时候，在我睡觉之前，我会用收音机收听英语频道来提高我的听力。我还有一些外国网友，我们可以在网上用英语交谈来练习我的口语。这些就是我怎样学习英语的。

　　每个人都有一个家庭，家是爱的起源地，我的家庭的英语作文并不难写。下面是我给大家精心挑选的my family英语作文60词六年级，希望大家喜欢!供你参考和阅读! 　　my family英语作文60词六年级篇1 　　My family 　　My family lives in Taiwan, but my father doesn"t. He lives in China. My family name is Jian. I have one brother and one sister. My name is Jeff. My brother"s name is Art. My sister"s name is Sophia. My father"s name is Jian Zong-he and my mother"s name is Jenny. I like to watch TV and play PC games. My brother likes them, too. My father and my mother both like to watch TV. My brother and I are both junior high school students. My father is a businessman. My mother is a businesswoman. I like my family very much. 　　my family英语作文60词六年级篇2 　　My family 　　My family lives in Hsi-hu. there are four people in my family. they are my father, my mother, my sister and I. My father is tall and thin. He is a handsome man. He has big eyes. His hair is straight. He likes to watch TV and movies and read books. My mother works in an office. She cooks very well. She likes to read books, too. She is short and thin. My sister is a student. She is an independent girl. She is very graceful. I am a student, too. But I study in a junior high school. I go to school every weekend. I like to play dodge ball and listen to music very much. much. I like my family because each family member helps me a lot. 　　my family英语作文60词六年级篇3 　　My family 　　I love my family, because I have a happy family. 　　My father is an English teacher. His name is Jacky. He is thirty-eight. He likes playing basketball. Whatu2019s my mother job? Is she a teacher? Yes, youu2019re right! My mother is very kind and nice, she is thirty-seven. My mother is always laborious work. I love my parents! 　　On Saturday and Sunday, I often go to the library and play the piano, My father go to play basketball. Sometimes, we watch TV and listen to music at home. 　　I love my family. Because Iu2019m very happy to live with my parents together!

英文日期书写顺序英文日期书写顺序分英式和美式，举例如下。美国：月日年（January 8th,2014 或January 8,2014 ）英国：日月年（8th January,2014 或8 January,2014）英文日期书写格式日期书写表达注意事项：1)年份必须完全写明，不可用"14代替2014;2)月份必须用英文拼出或采用公认的简写，即 January (Jan.),February (Feb.),March(Mar.),April(Apr.),May,June(Jun.),July(Jul.),August(Aug.),September (Sept.),October(Oct.),November(Nov.),December(Dec.);注意：五月份没有缩写所以后面不用加.号，九月是Sept四位或者Sep三位的缩写都可以，其他的都取前三位。3)日期可用序数词，如：1st,2nd,3rd,4th,5th,...；也可用基数词，如：1,2,3,4,5,...。但美式大多采用后者；4)在年份和月日之间必须用逗号隔开；5)注意如7.12.2014和7/12/2014的区别，否则会引起误解。因为英美在这方面的习惯用法不同。按美国人习惯，上述日期为2014年7月12日，而按英国习惯则是2014年12月7日。

春节的英语作文60词 　　农历的第一天是春节，是我国最盛大的节日，下面是我为大家搜集的.春节英语作文60词，欢迎大家借鉴。 　　春节英语作文60词一 　　Far and away the most important holiday in China is Spring Festival, also known as the Chinese New Year. To the Chinese people it is as important as Christmas to people in the West. The dates for this annual celebration are determined by the lunar calendar rather than the GREgorian calendar. 　　so the timing of the holiday varies from late January to early February. To the ordinary Chinese, the festival actually begins on the eve of the lunar New Year"s Day and ends on the fifth day of the first month of the lunar calendar. But the 15th of the first month, which normally is called the Lantern Festival, means the official end of the Spring Festival in many parts of the country. 　　Spring Festival is the most importantand popular festival in China.Before Spring Festival ,the people usually clean and decorate their houses.And they go to the Flower Fairs to buy some flowers.During Spring Festival ,the adults usually give lucky money to children.People often get together and have a big meal.Some people eat dumpling for dinner. 　　春节英语作文60词二 　　Will Christmas Replace the Spring Festival? 　　Christmas arouses increasing attention year by year in China. Christmas cards become popular with students. People hold Christmas parties and exchange Christmas girts. A lot or TV and radio programs about Christmas are on. Meanwhile the Spring Festival is less appealing (有吸引力的)to youngsters. Thus some people wonder whether Christmas will replace the Spring Festival. 　　This worry is fairly unnecessary. Why ? One reason lies that Christmas only affects Christians，college students and joint-venture (合资企业)workers. Another reason is that Christmas is mostly celebrated in cities. Few people in countryside show extreme interest in this exotic(带有异国情调的) festival. By contrast，the Spring Festival is the most influential traditional festival in every family. 　　I think，it is natural that with increasing exchanges with the West，a lot of Western holidays have been gradually introduced into China. For us Chinese we should never neglect or even discard our own traditional festivals. For centuries Chinese have observed this traditional holiday to welcome the beginning of a new year. And we will treasure the Spring Festival forever. 　　春节英语作文60词三 　　The lunar new year is a great occasion to the chinese people. it lasts about the first four days of the year,during which people do not work except for the workers on duty. students do not go to school,and shops are closed. 　　several days before the new year,people begin to prepare. farmers kill pigs,sheep,cocks and hens. city dwellers buy meat fish and vegetables. houses are cleaned; coupletsare posted on the doors. colourful lanterns are hung at the gate. 　　On the eve of the new year,each family has its members gatherd together and eats a family reunion dinner. after the meal they watch tv until the clock strickes twelve. then every family sets off long strings of small firecrackers and other fire works to welcome the new year. on the first day of the new year,almost everyone is dressed in his or her best. when people meet on the way,they say to each other “happy new year”. friends and relatives pay new year calls and gives presents to each other. children indulge themselves in games. 　　春节英语作文60词四 　　Chinese Spring Festival celebrating the end of winter and the warmth of spring. It began in the last day of the lunar year, end in the 15th day of lunar New Year, also is the Lantern Festival. During the Spring Festival, people use red lantern and Spring Festival couplets decorate a house, put on all kinds of colored clothes, often visit friends and relatives or together eat dumplings, fish, meat and other delicious food. The children are looking forward to receiving red envelope money, and together they play each other the fireworks, with happy. Street with dragon and lion dance and some other carnival activities, CCTV will held the grand Spring Festival gala. ;

下面是我整理的初二英语作文60词左右的范文，赶紧收藏起来好好学习吧，供大家参考。 以“How to Eat in a Healthy Way”为题的演讲稿 How to Eat in a Healthy Way Hello, everybody. I"m Li Hua.Today my topic is how to eat in a healthy way. Firstly, we should never eat fried food or foods with lots of sugar because they are not good for health.Secondly, try to eat more vegetables and fruit.Because they can make us become much healthier. My eating habits are good.For example, I often eat healthy foods, like wholemeal bread, eggs, vegetables and milk for breakfast and rice, noodles, and vegetables for dinner. I hope everyone can eat in a healthy way. 低碳生活 My Low-carbon Life The environmental pollution is worse and worse today. Many trees are cut down, and water and air are polluted. As a student I try to have a low-carbon life to save energy and reduce pollution. Firstly, I often walk to school. It can reduce air pollution. Secondly, I always turn off the lights and fans when leaving the classroom. Thirdly, I always make full use of paper and other school things and never waste water. I wish more students to join me and make the earth more and more beautiful. 保护环境，人人有责 How to be a greener person It"s our duty to protect the inviyonment around us. When we go to school, we should ride a bike or take a bus. When we go out for activities, we shouldn"t step on the grass. We can"t draw everywhere. When we go shopping, we"d better use a cloth bag. At home we can save water and electricity. When we leave a room, we should turn off the ligts. At school we can collect wast paper and recycle things, such as bottles, cans and plastic bags. We shoudn"t listen to pop music or spit in pulic. Let"s do something to protect our environment.

以结尾来判断:1结尾的 1st. 2结尾的 2nd. 3结尾的 3rd. 其余的加th.21st 22nd 23rd 24th 25th....

日期英文缩写如下：英文星期缩写：星期一Mon，星期二Tues，星期三Wed，星期四Thur，星期五Fri，星期六Sat，星期天Sun。月份的英语缩写：一月Jan，二月Feb，三月Mar，四月Apr，五月May，六月Jun，七月Jul，八月Aug，九月Sept，十月Oct，十一月Nov，十二月Dec。英文日期缩写：1st、2nd、3rd、4th、5th、6th、7th、8th、9th、10th；11th、12th、13th、14th、15th、16th、17th、18th、19th、20th；21st、22nd、23rd、24th、25th、26th、27th、28th、29th、30th、31st。英语日期的表示法英语中月份和星期名称都是专有名词，它们的首字母必须大写，并且前面无需用冠词。用英语表示日期，其顺序为月＋日＋年，日和年之间需用逗号隔开。如：August 2nd，2021(2021年8月2日）。也可以用日＋月＋年来表示。如：10th May，2021(2021年5月10日）英语日期前介词的使用：若指在哪一年或哪一月，则用介词in，若具体到某一天，则需用介词on。①She was born in 1998.②She was born in August.③She was born in August 1998.④She was born on 2nd August, 1998.

英文日记通常由书端和正文两个部分组成。日记常以第一人称记下当天生活中的所见、所闻、所做或所想的事情。中、英文的日记三格式大致一样。英语日记的书端是专门写日记的日期、星期和天气的。左上角是日期(年、月、日)、星期。右上角写上当天的天气情况，如：Sunny, Fine, Rainy, Windy, Snowy, Cloudy等。 　　 日期表达有多种形式。年、月、日都写时，通常以月、日、年为顺序，月份可以缩写，日和年用逗号隔开。例如： December 18, 2003 或者 Dec. 18, 2003 　　　　 　　A) September 1, 2004或September 1st, 2004也可省略写成Sept. 1, 2004或Sept. 1st, 2004；B)the 1st of September in 2004(月份不可以缩写) 　　　　 　　B)只有月、日 　　　　 　　September 1或September 1st(月份可以缩写) 　　　　 　 C)只有年、月 　　　　 　　September 2004或the September of 2004(月份不可以缩写) 　　　　 　　以上的1或1st都应读作the first。 　　　　 　　2.星期也可以省略不写，可将其放在日期前或后，星期和日期之间不用标点，但要空一格，星期也可缩写。如： 　　　　 　　Saturday, October 22nd, 2004；October 22nd, 2004 Saturday 　　　　 　　3.天气情况必不可少。天气一般用一个形容词如 :Sunny, Fine, Rainy, Snowy 等表示。写在日期之后，用逗号隔开，位于日记的右上角。如： 　　　　 　　Saturday, March 4, 2004, Windy；1st January, 2004, Fine 　　　　

看来你是想空手套白狼吗？如果是请别人帮助的话，应该有句礼貌的语言，这么旁若无人般的对着电脑大要你想要的这个东西合适吗？再说了大家都素不相识的，这里又不是你个人的秘书处，别人凭什么要按照你的要求为你作答你又凭什么这样无偿的占有别人的劳动果实并且没有1句礼貌的语言。

　　又一个周末到来，你的周末打算怎么过呢?写一篇 英语 作文 介绍一下吧。下面是我为大家整理的我的周末英语作文60字，欢迎大家阅读。 　　我的周末英语作文篇一 　　Last weekend,I did a lot of things.It was fun! 　　On Saturday morning,I cleaned the room.Then I did my homework. 　　It"s so hard.After that,I went to the library. 　　I have some questions so I need to find the answers in the books. 　　The next day,I flied kites in the park.As soon as I came back home from the park,my friends phoned me to go to the zoo. 　　When we went back home,it was very late.So I played the giutar for a few time and then went to bed. 　　我的周末英语作文篇二 　　Today is sunday.I am in hainan with my friends now.it is a sunny day,I got up early at Seven thirty,I watched a movie with my brother in the morning,it was a interesting film. 　　And in the afternoon,I went swimming with my best friends . 　　I was tired.But I was happy ,too.Uh...What a wonderful day it is! 　　我的周末英语作文篇三 　　I had a happy weekend.On Saturday morning,I did my homework.It was a little easy. 　　On Saturday afternoon,I played with my friends at my home,some played chess,others played at my room.It was funny. 　　On Saturday night,I studied at school.On Sunday morning,I went shopping with my sister,On Sunday afternoon,I staying at home. 　　On Sunday night,I studied at school,too.This is my happy weekend! 　　我的周末英语作文篇四 　　I had a busy weekend。On Saturday morning,I cleaned my room.It was tired,but my room very clean.In the afternoon,I play sports with my mother. 　　In the evening,I did my homework。On Sunday morning，I went to the library. 　　I read a book about Chinese.I like went to the library. 　　On sunday afternoon，I went to the farm to helped the farmers pick apples. 　　Then I went to the home. In the evening.I went to the supermarket with my mother.It was interesting. 　　I really love this weekend.I hope every weekend happy. 　　我的周末英语作文篇五 　　I have a very busy weekend. 　　I and my best friend in the morning to go to the playground to play soccer. 　　At noon, I and my best friend to go hiking. 　　In the evening, we were watching the moon, we are very pleased that this is really a happy day. 　　This is my weekend, it was busy, and very happy! 　　我的周末英语作文篇六 　　I went to Beijing Zoo on Saturday morning. 　　I went there with my teachers by bus. It took us half an hour to get there. There were many kinds of animals. First, we went to see pandas. 　　They were my favorite animals. How lovely they were! Then we watched the elephant show. The elephants were so clever that they were able to answer some math questions. 　　At last, I took some photos of them. I had a great time. 　　I stayed in Beijing Zoo for 2 hours.我的周末英语作文60字相关推荐： 1. 我的周末英语作文60词 2. 我的周末英语作文50词 3. 描写我的周末英语作文 4. 我的一天英语作文60字 5. 关于周末的英语作文

　　高中英文日期书写格式 　　英文日期分英式和美式,举例如下: 　　1) 8th March,2004 或8 March,2004(英式) 　　2) March 8th,2004 或March 8,2004 (美式) 　　日期写法宜遵从下列规则： 　　1)年份必须完全写明，不可用"04代替2004; 　　2)月份必须用英文拼出或采用公认的简写，即 January (Jan.),February (Feb.),March(Mar.),April(Apr.),May,June,July,August (Aug.),September 　　(Sept.),October(Oct.),November(Nov.),December(Dec.); 　　3)日期可用序数词，如：1st,2nd,3rd,4th,...;也可用基数词，如：1，2，3，4，...。但美式大多采用后者; 　　4)在年份和月日之间必须用逗号隔开; 　　5)日期不可全部采用如7.12.2003或7/12/2003的阿拉伯数字书写，否则会引起误解。因为英美在这方面的习惯用法不同。按美国人习惯，上述日期为2003年7月12日，而按英国习惯则是2003年12月7日。 　　6th April,1978 是英式英文的写法. April 6th, 1978 是美式英文的写法.(注意:日子和月份中间没有逗号.) 　　6th,April,1978 　　April 6th,1978 　　April 6,1978 都正确 　　关于日期的写法，应注意以下几点： 　　①年份应完全写出，不能简写。 　　②月份要用英文名称，不要用数字代替。 　　③月份名称多用公认的缩写式。但 May, June, July, 因为较短，不可缩写。 　　④写日期时，可用基数词1，2，3，4，5，u2026u202628，29，30，31等，也可用序数词 lst, 2nd, 3rd, 4th, 5th, u2026u202628th, 29th, 30th, 31lst等。但最好用基数词，简单明了。 　　日期可有下列几种写法： 　　① Oct. 20, 2004 　　② 10 May, 2004 　　③ 3rd June, 2004 　　④ Sept. 16th, 2004 　　按美国习惯, ①最为通用日期的写法，月、日、年，月份用英文，日和年用阿拉伯数字。例如：2008年9月8日应写成：Sep. 8, 2008 或 09/08/2008 　　补充： 　　英文日期格式及缩写总结 　　日期格式： 　　英式日期格式：22nd,July,2009 或22,july,2009 格式为：日,月,年 　　美式日期格式：july 22nd,2009 或 july22,2009 格式为：月 日,年 　　中文日期格式：2009年7月22日 　　日，月，年是这样的格式 1st, Jan., 2009(要两个逗号了)，或者 01-01-2009(01/01/2009) 　　月，日，年是这样的格式 Jan. 1st, 2009 　　1st, Jan., 2009和 Jan. 1st, 2009 读法也不同： 　　1st, Jan.:First of January 　　Jan.1st:January the first 　　月份缩写： 　　January 一月 Jan. 　　February 二月 Feb. 　　March 三月 Mar. 　　April 四月 Apr. 　　May 五月 May 　　June 六月 Jun. 　　July 七月 Jul. 　　August 八月 Aug. 　　September 九月 Sept. 　　October 十月 Oct. 　　November 十一月 Nov. 　　December 十二月 Dec. 　　注意五月和九月，五月份没有缩写所以后面不用加.号，九月是Sept四位或者Sep三位的缩写都可以，其他的都取前三位。 　　日的缩写表示法： 　　1st 2nd 3rd 4th5th 6th 7th 8th 9th 10th 　　11th 12th 13th14th 15th 16th 17th 18th 19th 20th 　　21st 22nd 23rd24th 25th 26th 27th 28th 29th 30th 31st 　　日的缩写使用序数词的表示方法，有规律的，以1,2,3结尾的数字比较特殊，分别以st,nd,rd表示，其他都用th表示。 　　星期的缩写： 　　Monday 星期一 Mon. 　　Tuesday 星期二 Tues. 　　Wednesday 星期三 Wed. 　　Thursday 星期四 Thurs 　　Friday 星期五 Fri. 　　Saturday 星期六 Sat. 　　Sunday 星期天 Sun. 　　注意星期四缩写是Thur.或Thurs 　　时间的表示格式： 　　通用的各国时间表示 小时:分:秒 AM/PM，如：7:06:28 AM 　　AM 上午 after midnight 　　PM 下午 prior to midnight 　　AM是0时-12时(包括0时)，PM是12时-0时(包括12时) 　　高中英语的书信的格式介绍 　　英文书信通常由下列五个部分组成： 　　A 信头(Heading) 　　信头包括写信人地址和写信日期，通常写在信笺的右上角。在比较熟识的朋友之间的通信，写信人的地址常可略去。本课的信头就只写了写信日期，而没有写信人的地址。日期通常有下列两种定法： (a)月、日、年：如August 15, 200__ 　　(b)日、月、年：如15th august, 200__ 　　地址的写法通常是由小到大，如：门牌号、街道名、市(县)名、省名、国名(邮政编码通常写在城市名之后)。这同中文书信的地址写法完全相反。地址可以写1～3行，日期写在地址的下方(见信笺格式)。 　　B 称呼(Salutation) 　　称呼指写信人对收信人的称呼，如Dear Xiaojun，写在信头的下方和信笺的左边。称呼一般用Dearu2026或My dearu2026开头，称呼后一般用逗号。 　　C 正文(Body) 　　这是书信的主体部分，即写信人要表达的内容。正文要求文字通顺，层次分明，表意清楚。可以手书，也可以打写。 　　D 结束语(Complimentary Close) 　　它是书信结尾的恭维话，相当于文中书信最后的“祝好”、“致礼”之类的话语。本课书信中的“Best wishes”(致以最好的祝愿)就是结束语。 　　E 签名(Signature) 　　签名通常签在结束语下方的中间偏右的位置，如本课信中的Charlie.签名应是亲笔书写，即使是打写机打出的信件，最后仍需亲笔签名。在签名的上方可根据写信人和收信人的关系写上Sincerely yours/Yours sincerely(用于长辈或朋友之间)，或Respectfully yours/Yours respectfully(用于对长辈或上级)。 　　英文书信格式称谓差异 　　商务英语书信(Business or Commercial English Correspondence)是指交易时所使用的通信。在美国，常用Business writing，它包括书信、电报、电话、电传、报告书、明信片等。英语和美语在书信体例方面存在着一定的差异，比如信头和称呼、书信格式、遣词、结尾客套语等均有所不同。 　　一般来说，英国书信较为保守，许多英国人喜欢用老式书信体，用词较为正式刻板，而美国书信语言非常生气、有活力，格式也较为简便。因此当我们写信的对象是英国或其旧殖民地国家时，要使用标准式英语Queen"s English;如果写信的对象是美国或美国势力范围的地区时，就要用美国英语。当然，英国式的语言文化近年来也有变化，但总体来说，两者间的差异是很明显的。 　　商业英文书信，一般都要求用打字机或电脑整齐地打印，左边各行开头垂直的，称为垂直式或齐头式(Block style)，美国常用这种格式;每段的第一个词缩进去，称为缩进式或锯齿式(indented style)，英国常用此格式。垂直式的职务及签名都在左边的边栏界线，这种格式，在极度尊重工作效率的美国公司，已普遍采用。正式的商业英语书信要在称呼的上方写上收信公司名称和地址或收信人的名字全称、职务及地址，称为信内地址(Inside address)。信内地址的写法也有垂直式和缩进式之分，垂直式和称美国式将各行并列，缩进式或称英国式将各行依次退缩。

0是自然数。自然数是指表示物体个数的数，即由0开始，0，1，2，3，4，……一个接一个，组成一个无穷的集体，即指非负整数。自然数有有序性，无限性。分为偶数和奇数，合数和质数等。由自然数的定义可以得到0是一个自然数。扩展资料：数字0的一些特性：（1）0没有倒数（2）0的绝对值是其本身，即，∣0∣=0。（3）在所有实数的绝对值中，0的绝对值是最小的。（4）0乘任何实数都等于0，0除以任何非零实数都等于0；任何实数加上或减去0等于其本身。数列0,1,2,3,4,5,6,7,8,9,10,11,12,……n，称为自然数列。自然数列的通项公式an=n。自然数列的前n项和Sn=n（n+1）/2。 Sn=na1+n（n-1）/2自然数列本质上是一个等差数列，首项a1=1，公差d=1。0的发现始于印度。公元前2000年左右，古印度婆罗门教最古老的文献《吠陀》已有“0”这个符号的应用，当时的0在印度婆罗门教表示无（空）的位置。约在6世纪初，印度开始使用命位记数法。7世纪初印度大数学家葛拉夫.玛格蒲达首先说明了0的0是0，任何数加上0或减去0得任何数。在我国古代文字中，中文的“零”字出现很早。不过那时它不表示“空无所有”，而只表示“零碎”、“不多”的意思。如“零头”、“零星”、“零丁”。“一百零五”的意思是：在一百之外，还有一个零头五。但中国古代并没有0这个字体，只有中文的字体零来表示。参考资料来源：百度百科-自然数

一、一般的转换方法 假如A列为英文日期格式，譬如是： A119-Jul-12 A220-Jul-12 A321-Jul-12 A422-Jul-12 那么，如果你想将其转换为中文的日期，假如放在B列，首先你得将B列设置为中文的日期格式，方法是：选择B列，然后找到菜单“格式”→“单元格”。 在对话框中，找到“日期”，在右边的类型里面找到一种中文的日期格式，比如：二00一年三月十四日 然后，直接在B1中使用简单公式：=A1这样，就转换为中文日期了，其它单元格直接使用填充就搞定了。 这样，在B列，我们将得到如下的中文日期 二○一二年七月十九日 二○一二年七月二十日 二○一二年七月二十一日 二○一二年七月二十二日 二○一二年七月二十三日 如上的方法，直接使用单元格的数据类型的方法设置就可以了。 二、其它的转换方法 ①种情况 如果英文日期形式为：May 10rd，2012 像这种数据直接设置单元格格式中的日期格式是不管用的 要想变为中文日期形式，首先：把日期中的日（也就是中间的那个数）后面的rd、th、st、nd等替换为空 然后再设置单元格的格式中日期格式为yyyy-m-d（也可换成你想要的日期格式），即可 ②种情况 假如有这样的英文日期数据为：Feb 18 2008 12:00AM 这样的格式 通过如下的函数可以转换成数字型的 假设你的日期在A1 =TEXT(MID(a1,5,2)&"-"&LEFT(a1,3)&"-"&MID(a1,8,4)&" "&MID(a1,12,6),"YYYY日MM月DD日,上午/下午h时mm分")