作业帮 > 英语 > 作业

as的知识点有什么

来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:英语作业 时间:2024/07/04 04:13:28
as的知识点有什么
as的知识点有什么
一、as充当连词
as常常用来引导一个分句,在句子中充当状语,表示时间、比较、理由等.
1.as引导比较状语从句,意为“像……一样”,常用句型为“as(adv.)... as(conj.) ..., not so/as...as...”.
I'm not so good at drawing as you.我不像你那样擅长画画.
She is as wise as(she is)active.她又活泼又聪明.
注:(1)在比较级前可加一个表示倍数等的状语.
The population of his city is twice as largeas that of mine.
(2)可跟一个作状语的结构(副词或介词短语等).
I saw him as recently as last month.我最近见到他是在上个月.
The number of peoplew ho lost homes reached as many as 250,000.失去家园的
人数多达25万.
(3)英语中有很多表示比较的成语.
as black as coal
as blind as a bat
as brave as a lion
as brig ht as day
as busy as a bee
as cold as ice
as easy as ABC
as fat as a pig
as hot as fire
as light as air /a feather
as likeas two peas /beans
as poor as a church mouse
as rich as a Jew
as sound as a bell
as strong as a horse
as stupid as a donkey
as sweet as honey /sugar
as whiteas snow
as red as blood
2.as引导方式状语从句,表示“像……一样”,“按照”.
You must do everything as I do.你必须照我做的那样做.
I have changed it as you suggested.我已按你建议的那样改了.
3.as引导时间状语从句,常表示伴随情况,“正当,一面……一面”.
She often sings as sheg oes along .她常边走边唱.
As the students watched him quietly, he mixed the three(petrol,castor oil and vinegar)together.正当学生们聚精会神地观看时,他把三样东西(汽油、蓖麻油、醋)搅拌在一起.
注:(1)as soon as表示“一……就”.
As soon as Li Wei comes,I'll tell her about it.
(2)as引导的从句可表示两个动作同时发生,说明一个阶段的情况.
We get wiser as weget older /as time passes on.随着年岁逐增/时间的推移,我们变得更加精明.
(MET90No.15)the day went on,the weather got worse.
A.With B.Since C.While D.As
(3)有时可以引导一个名词.
As a young man,Abraham Lincoln worked in a store and later in a post office.林肯年轻时曾在商店和邮局工作过.
4.as引导原因状语从句,表示“由于,因为”(语气比because弱),常置于句首.
As I'm ill,I won't go.我有病,不去了.
As it's raining hard,we can not go climbing.天下着大雨,我们不能去爬山了.
5.as引导让步状语从句,表示“虽然,尽管”,常用在“adj./n./adv.+as”结构中.
Poor as he was ,he was honest.他很穷,却很诚实.
Child as he is ,he knows a lot.尽管他是个孩子,但懂得很多.
Fast as he ran,he didn't catch the bus.虽然他跑得很快,但没能赶上汽车.
6.as引导目的和结果状语,这时常与so搭配.
He raised his voice so as to be he ard.他提高嗓门,好让别人听见.
Will you be so kind as to help me?请你帮帮我好吗?
二、as充当代词
1.as常充当关系代词,引导非限制性定语从句,从句可放在句首、句中和句末.as指代整个句子,它在从句中作主语、宾语或表语.
As is known to us all,the earth turns round the sun.众所周知,地球绕着太阳转.
The earth,as is known to us all,turns round the sun.
He succee ded,as we had expected.正如我们所预料的一样,他成功了.
She's a fine dancer,as her mother used to be.她是一个出色的舞蹈家,正如她母亲以前那样.
('99上海卷)is mentioned above,the number of the students in senior high schools is increasing.
A.Which B.As C.That D.It
常用的这种类似插入语的句式有as is said above,as it is ,as is often the case,as is reported in the newspaper,as we had pointed out等等.
2.与such或the same等词搭配,引导定语从句,as在从句中作主语、宾语、表语或状语.
I never he ard such stories as he told.我从未听过像他讲的这样的故事.
Our country is no longer the same as it used to be.我国同以前不一样了.
I shall do it in the same way as you did.我将按你做的方法去做.
三、as充当介词
介词as后面常跟名词或代词,意为“作为”,表示人或物的作用、地位、角色、职业等.
He works as a teacher.他当老师.
As a student,it is bad manners to come late to class.作为一名学生,上课迟到是不礼貌的.
He use s his coat as a blanket.他用衣服当毯子.
教材中有许多动词与as连用构成固定词组.
四、as充当副词
as作为副词,常用在形容词和副词的比较结构中,意为“像……一样,同样”.
She sings as(adv.)well as(conj.)a singer.她歌唱得跟歌唱家一样好.
Tom runs fast,but I run just as fast.汤姆跑得快,我跑得也一样快.
五、as构成的常用词组
1.as a matter of fact实际上,事实上
As a matter of fact,I'm very fond of house work.
2.as a result结果(发生某情况)
As a result,he was given an excellent job.
3.as a /the result of由于
As the result of the heavy rain,wecouldn't go out.
4.as...as possible/sb.can尽可能……的,尽某人所能
He began to run as fast as possible/he could.
I tried to be as friendly as possible.
5.as follows如下
Our plan is as follows.
6.as for至于,说到
As for me,I shall never re turn there.
7.as good as几乎已经,实际已经
Everything was as good as settled.一切都差不多安排好了.
比较:Your composition is as good as his.你的作文和他的作文一样好.
8.as /so far as就……,尽……,达到……程度
As far as I know,they are all poets.据我所知,他们都是诗人.
比较:We might go as far as the school and back.我们可以走到学校那边,然后回来.
9.as /so longas只要,如果
As /So long as it doesn't rain,we can play.只要不下雨,我们就能玩.
比较:I've waited as long as two hours.我一直等了整整两小时.
10.as well as同样,和,也,而且
He can speak German as we ll as English.他既会讲英语也会讲德语.
比较:He can speak English as well as she.他和她英语讲得一样好.
11.as many /much /deep /large,ect.as达……程度,多/深/大……达
As early as his second film,Chaplin had developed his own manner of acting.
早在他第二部电影中,卓别林就形成了自己的表演风格.
The well is as deep as eight metres.这口井深达八米.
12.as usual像平常一样
She would go homeas usual for Christmas.
13.so as to以便,为了
He got up early so as to catch the first bus.
14.such as像……之类,例如
He knows a lot of poets ,such as Shelley and Byron.
15.may(might /could)as well不妨,不如
You may as well wait upstairs.
The n you might as well stay
百度专家组为您解答,请按一下手机右上角的采纳!谢谢!