有关as的用法

有关as的用法 as的用法和使用技巧?

as的用法和使用技巧?

as的用法和使用技巧?

1、as作副词,表示程度,意为“同样地”。在“as…as…”,“not-as…as…”结构中的第一个as是副词,作“和/与…(不)一样”解。

2、as作介词。作“如,像”解。或者为“充当,作为”。

3、as作连词,常用来连接主句和状语从句。引导时间状语从句:作“当…的时候”解,有“随着…”之意,与while意义相近,强调两个动作同时发生;或某事一发生,另一事立即发生。引导原因状语从句:作“因为,由于”解,与because的用法相近。引导方式状语从句或比较状语从句:作“正如,(如)像”解。引导让步状语从句:作“虽然,尽管”解。这时从句常用倒装语序,即把从句中的表语、状语或动词原形放在as之前。

4、as作关系代词。引导限制性定语从句:用在“such…as”,“the-same…as”,“as…as”等结构中,常译作“像…一样的人(或物)”,“凡是…的人(或物)”。引导非限制性定语从句:用来指代它前面的整个句子(即先行句),意思是“这一点”。这个分句可以位于句首、句中或句末。

as 用法?

一、 as作连词的用法:

1. 作#34当……的时候#34,引导时间状语从句。注意与when、 while的用法区别。

① when作#34当……的时候#34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. 工作的时候工作。玩的时候玩。

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#34一边……,一边……#34。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#34随着……#34。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#34既然#34、#34由于#34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#39re not feeling well, you may stay at home.

As he wasn#39t ready in time, we went without him.

3. as=in the way that, 作#34像#34、#34按照……的方式#34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 man as often as possible.

I don#39t speak English so/ as well as he does.

5. 作#34虽然#34、#34尽管#34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#34正如#34、#34这一点#34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#34作为#34少数情况可引起宾语补足语。如:

As a League member, I#39ll 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)

短语

as well 也;同样地;还不如

as well as 也;和…一样;不但…而且

as one 一致的