as的用法

如题所述

as可用作连词,引导比较、时间、原因及方式等四种状语从句,应注意的是,引导的比较状语从句往往有省略;引导的时间状语从句一般用一般现在时而不用一般将来时;引导原因状语从句时与“Because”和“since”引导的从句比较起起来语气最弱。
as作介词,意思时“作为”,“以……身份”。例如:He came to China as a tourist five years ago.

而表示像…一样时,like通常作介词用,而介词后面通常接名词,代名词和动名词。

as in Australia“和在澳大利亚一样”。

as……as
AS +adj(原级)+AS
AS +adv(原级)+AS
as soon as 一……就
as soon as possible 尽可能快地
as early as possible 尽可能早的
as carefully as you can 尽可能认真地
as careful as you can 尽可能认真的

1。as是连词,表示“随着”的意义。lives是life的复数,意义是“生活”。<BR>
2。as是连词,表示“因为,由于”的意义。wanting是现在分词,表示主动意义,wanting to buy cars=who want to buy cars。
As的用法小结
as可以作连词、介词及关系代词和副词。现将其用法小结如下:
(一)、 as作连词的用法:
1.作“在-------期间,当----的时候”引导时间状语从句.注意与when、 while的用法区别。
①下列情形时,只用as, 而不用when或while。
1)用于表示同一个人的两种动作交替进行,指一边----一边. 如:
The girl sings as she goes to school.
He looked behind occasionally as he went forward in the forest.
2)表示两个同步发生的动作或行?意思是随着-----的发展.如:
As time went on / by, she became more and more beautiful .
As children get older, they become more and more interested in everything.
3)表示两个短暂行为或事情几乎同时发生.如:I watched her as she read the book.
I thought of it just as you opened your mouth.
Just as the flying worm hit her face, she gave a loud cry.
4)接在名词后面表示某一个年龄段时.如:
As a young man, he was active in sports.
②when作"当……的时候"解,可以指较短的(一点)时间,也可指一段时间。如:When I was at college, I could speak several foreign languages. When the clock struck twelve, I had slept for 2hours.
③ while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词同时发生。如:Work while you work. Play while you play.
2. As =Since 作"既然"、"由于"解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由。如: As he’s been ill for ages, I will help him.
As / Since you're not feeling well, you may stay at home.
As he wasn't ready , we went without him.
3. As =in the way that作"像"、"按照……的方式"解,引导方式状语从句。如:
Do as I told you.
Remember, you must do everything as I do.
4. 用于as--- as或not / so/ as ---- as中,前一个as是副词,后一个as是连词,引导比较状语从句。如:They helped the old as much as possible.
I don't speak English so/ as well as she does.
5. 表示虽然,尽管 等,引导让步状语从句,常用倒装语序,模式为:
adj. /adv. / n.+as +主语+谓语+主句。如: Young as he is, he knows much.
Tired as they were, they walked on.
6. 表示也------一样。 She is a doctor, as was her husband.
(二)、 as作关系代词,引导定语从句,表示正如,这一点.如:
He is very careful, as we all know.
As is well-known, Taiwan belongs to China.
另外,当先行词被the same, such等词修饰时,常用as来引导定语从句。如:
Such a clever girl as she can learn anything quickly.
I was reading the same book as he bought yesterday.
(三)、as作介词的用法.
1.表示好像。如:He dressed as a policeman.
2. 表示作为当作。如:I found a job as a guide.
3. 当某人是某身份时。如:As a child , she was sent to abroad.
4. as引导的介词短语大多用作状语,as译为"作为";少数情况可引起宾语补足语。如:
As a Party member, I'll take the lead in everything. (状语)
She works as a model. (状语)
She has me as one of her best friends.(引起宾语补足语)
(四)、作副词的用法 1 表示与------等同。如:This dress is twice as expensive as that one. 2 像,如等。如:As before, he remained unmoved.
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第1个回答  2013-12-12
as
n. acanthoma的变形
as1 [强 æz; 弱əz]
adv.
[表示程度]同样地,相同地,一样地,相等地,达到…程度
[后接形容词或分词]被认为,被看作是,(从某种方式)与…对比时
[后接 directed, agreed, promised 等分词]照…一样,按照(规定的、同意的、答应的)方式
诸如,例如
conj.
[表示比较]像…(一样),达到…程度,以至于:
It flew straight as an arrow.
它直飞如箭。
You are as good as you think you are.
你像你自己认为的一样好。
[表示方式]以…的方式,按照;如同,如同…那样:
Do as you are told.
照吩咐去做。
Do as we do.
我们怎么干,你就怎么干。
[表示时间] 当…的时候,在…的同时,和…同时;当,正值:
She wept as she spoke.
她边说边哭。
Pay as you enter.
进来时付钱。
[表示原因]因为,由于,鉴于;既然:
As you object, we won't go.
由于你反对,我们不去了。
As you are leaving last, lock up.
你是最后一个离开,把门锁好。
[与so连用,表示结果或目的]:以至于,结果是:
The question is so obvious as to need no reply.
这问题很清楚,不必回答。
[表示让步,词序倒装]虽然,尽管,纵:
Tall as she was she couldn't reach the oranges.
她虽然长得这么高,仍够不着那些橙子。
Strange as it seems,it is so.
虽然看来很怪,但事实如此。
[口语][引导名词从句,在主从复合句的主句中]= that:
I don't know as I should.
我不知道我该这么做。
I don't know as I do.
我不知道我知道。
[与 so 连用,表示目的]为了,为使,以便:
Students should take notes so as to make revision easier.
为了便于复习,学生应该记笔记。
[常与 so 连用,表示比例或关系]正像;随着…:
As the wind blew harder,so the sea grew rougher.
风越刮越大,海浪也越来越汹涌。
仿佛,好像( = as if):
It seems as she's never happy.
她似乎生活得一点也不愉快。
根据;[与 go 连用]按照…的一般标准来说:
as far as it goes
就一般标准来说,就其本身来说
[口语][引导名词从句, = that]
[方言]比;与其…(不如…)( = than)
pron.
如(情形或事实所表示);这一点,这一事实,那一情况
[用于比较,前为such 或 the same,或与后跟形容词的 as 连用,引导定语从句,等于who,which或that]照此;如;像…样的人(或事物);凡是…的人(或事物)
也一样( = and so)
[方言][引导定语从句,= who,whom,which 或 that]
prep.
当作;作为;以…的资格,以…的身份:
He poses as a friend.
他摆出一副朋友的样子。
I do not think much of her as a musician.
她作为一名音乐家,我认为不怎么样。
像,如同,跟…一样:
The risk is as nothing compared to the gain.
所冒风险与所得相比不足挂齿。
The thief disguised himself as a policeman.
那贼乔装打扮成警察。
[表示比较]像…(一样):
as early as 1848
早在1848年
eyes as clear as crystals
水晶般明亮的眼睛
例如:
a card game, as bridge
一种牌戏,例如桥牌
In some words in English the initial h is not sounded,as honour,hour,honesty,etc.
英语里有些词如 honour,hour,honesty等等的首字h不发音。
为了…的目的:
I only said it as a joke.
我只是开玩笑说说而已。
以…的形式:
We all start life as babies.
我们都是从婴儿开始人生的旅程的。
由于…的理由[as being的省略形式]:
He was detained as suspects.
他因是嫌疑犯被拘留。
起…的作用;(在剧中)扮演…的角色:
The illustration shows Mr.John as prince in Hamlet.
这个插图说明约翰先生在《哈姆雷特》一剧中扮演王子这个角色。
当某人在…的时候:
As a child,he was rather naughty.
他小时候挺淘气。
第2个回答  2020-02-01
第3个回答  2020-03-09
第4个回答  2020-03-20