要点归纳
本单元复习总结状语从句( adverbial clauses)
在句子担当状语的从句叫状语从句， 可修饰谓语，形容词，副词或整个句子。用它可以表示时间，地点，原因，目的，结果，程度，条件，行为方式，比较关系，让步等。
|
种类 |
连接词 |
例句 |
|
时 间 状 语 从 句 |
由连词或连词词组when, while, as , until, till, before, after, as soon as, every
time, the moment等引导。注意： 1)从句中谓语使用现在时与主句中将来时连用的问题 2)since 引导的从句中使用一般过去时，与主句中现在完成时连用问题 |
Every time I
have fever, I have pain in my back. I haven’t met him since he left school. I’ll let you know as soon as he comes back. |
|
原因状语 从句 |
由连词或连词词组按时，as, since, because. now that(=since)等引导 |
I was late
because I got up late. Now that you are all here, let’s start at once. |
|
结果 状语 从句 |
由连词或连词词组that, so that, so…that; such…that等引导 |
Bring the picture nearer (so ) that
I can see it clearer. She was so sleepy that she could hardly keep her eyes open. |
|
条件 状语 从句 |
由连词或连词词组if, unless, so(as) long as. So far as, in case等引导 注意：从句中谓语使用现在时与主句中将来时连用的问题 |
If he comes, I’ll be very happy. As far as I know, Smith is from America. You won’t succeed unless you work hard |
|
比较 状语 从句 |
由
连词than, as…as; so…as等引导 |
Tom walked as fast as I. The weather turned out to be very good, which was more than we expected. |
|
让步 状语 从句 |
由连词或连词词组as ,though, although, even though(if), no matter + however,
whatever 等引导 注意：as(虽然) 引导的从句中使用倒装语序 |
We’ll try to finish the work in
time though we have lots of difficulties. Young as he is, he knows more than others. |
|
方式
状语从句 |
由连词或连词词组 as，as if
(though) 等引导 |
We must do as the teacher told us. He acted as if he knew what had happened. |
典题归纳
Why do you want a new job____ you’ve got such a good one already?
A. that B. where C. which D. when
解析：本题题意为：在你已经有了这么好的一份工作的情况下，你为什么还要一份新工作呢？D项中when 表示原因，意为“既然”，符合题意，故选D.
点拨： when 除了引导时间状语外，还可用于下列几种情况，
1)表示原因，相当于“ as, since”, 意为“ 既然”
2)用于一般现在时，表示条件，相当于if
3)表示让步，相当于“although”.
[高考焦点]
1．---What was the party like?(NMET93)
--- Wonderful. It’s years____ I enjoyed myself so much.
A. after B. before C. when D. since