as的意思如下：
adv（程度或数量上）同样，一样；例如，诸如
conj像……一样；（说明某事应完成的时间或发生的频率）；照……方式，和……一样；正如，如同；当……时候，在……时候；虽然，尽管；因为，由于；（关系）就像，相当于；以至于（与so或such连用表结果）
例句：
Her skin was as smooth as silk
她的皮肤像丝绸一样光滑。
一、 as作连词的用法:
1 作"当……的时候",引导时间状语从句。注意与when、 while的用法区别。
① when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 he was at college, he could speak several foreign languages
When the clock struck twelve, all the lights in the street went out
② 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
③ 但属下列情形时,只用as, 而不用when或while。
A) 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 dances as she sings on the stage
He looked behind from time to time as he went forward
B)表示两个同步发展的动作或行为,译为"随着……"。如:
As time went on / by, she became more and more worried
As children get older, they become more and more interested in the things around them
C)表示两个短促行为或事件几乎同时发生。如:
I thought of it just as you opened your mouth
Just as the flying worm hit her face, she gave a loud cry
D) 后接名词表示某一年龄段时,用as。如:
As a young man, he was active in sports
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 / Since you're not feeling well, you may stay at home
As he wasn't ready in time, 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:
He speaks English as Americans do
Remember, you must do everything as I do
4 用于asas或not so/ asas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 man as often as possible
I don't speak English so/ as well as he does
5 作"虽然"、"尽管"解,引导让步状语从句。常用倒装语序,即adj /adv / n+ as +主语+谓语+主句。如:
Tired as they were, they walked on
Child as he is, he knows a lot (child前不用冠词)
二、 as作关系代词,引导定语从句,作"正如"、"这一点"解。如:
He is very careful, as his work shows
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 boy as he can learn anything quickly
I was reading the same book as he bought yesterday
三、 as作介词的用法:
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 League member, I'll take the lead in everything (状语)
She works as a doctor (状语)
They have me as one of their own children(引起宾语补足语)
as
英 [æz , əz] 美 [æz , əz]
prep像;如同;作为;当作
adv(比较时用)像…一样，如同;(指事情以同样的方式发生)和…一样
conj当…时;随着;照…方式;因为;由于;正如;尽管
as的五种意思：
①同样，一样；例如，诸如
②conj像……一样；（说明某事应完成的时间或发生的频率）；照……方式，和……一样
③当……时候，在……时候；
④虽然，尽管；因为，由于；（关系）就像，相当于；以至于（与so或such连用表结果）
⑤prep（被看）作……（被描绘）为……
例句：
1Her skin was as smooth as silk
她的皮肤像丝绸一样光滑。
2You're as tall as your father
你和你父亲一样高。
3He's nearly as tall as you are
他差不多和你一样高了。
4It's not as hard as I thought
这没有我想象的那么困难。
5I felt as pleased as anything
我感到无比高兴。
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