as引导哪些状语从句

Question

如题所述

Answer 1

1.As可以引导定语从句.有时可译为“正如”.此时,常常是as从句在前,主句在后.
例如：As we can see,he is a Chinese.
2.As 还可引导原因状语从句,“因为,由于”
例如：As he is so lazy,he never cooks by himself.
3.As还可引导时间状语从句,“当,随着”
例如：As the weather is colder and colder,the leaves of the tree is less and less.
4.As还可引导方式状语从句,“按照”
例如：You must do the work as I have told you.
5.As还可引导让步状语从句.“尽管”.但是注意,as引导方式状语从句时从句必须倒装.而且这种倒装和一般的倒装不一样.as从句的倒装一般是把从句的表语或作状语的副词提到as之前,（如果表语是一个带有不定冠词a或an的单数名词,倒装后a或an必须省略).
例如：Though he is a little boy,he knows a lot.如果变成由AS引导,就必须变成：
Little boy as he is,he knows a lot.
Though he works hard,he never succeed.
可变为 Hard as he works,he never succeed.

Answer 2

1．时间状语从句：
as（当……的时候）, as soon as（一……就……）,
As / When I came home, I met an old schoolmate of mine.我回家的时候遇到了我的一位老同学。
I’ll ring you up as soon as I get an answer from him.我一有他的答复就给你打电话。
2．原因状语从句
表示原因的状语从句可以由as（由于）
As she was ill, she didn’t come to the party.由于病了，她没来参加晚会。
3．条件状语从句
so /as long as（只要）, as/ so far as（就……而言）,
As/So long as we don’t lose heart, we’ll find a way to overcome the difficulty.只要我们不灰心，我们就能找到克服困难的方法。
As/So far as I know, he is an expert on DNA.据我所知，他是一个DNA专家。
4．方式状语从句
方式状语从句常由as（与……一样）, as if（仿佛）, as though（仿佛）等词引导：
Do in Rome as the Romans do.入乡随俗。
Leave things as they are.让一切顺其自然。
She stood at the door as if (=as though) she were waiting for someone.她站在门口，仿佛在等人似的。（由as if或 as though引导的从句中可用虚拟语气）
5．比较状语从句
as（与……一样）
Our country is as big as the whole of Europe.我们的国家同整个欧洲一样大。
The result was not as/so good as I had expected.结果不如我预料的那么好。

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Answer 3

三个状语从句。作“因为”解释时引导原因状语从句，作“尽管”时引导让步状语从句，作“当什么时候”引导时间状语从句。