状语从句考点：(1)主句与从句的时态呼应问题；(2)连接词的选择（注意区别几组连接词：while/ as/ when引导时间状语从句；because/ since/as/for引导原因状语从句；if/unless引导条件状语从句；so... that/such...that引导结果状语从句等。
Neither Bruce nor Susan can speak French.
Mother bought a new schoolbag for me at the beginning of this term.
Go straight on and you will find a toilet.
I would like to go with you, but I can't.
Hurry or you will be late.
She practices every day, so she plays the piano very well.
It must have rained last night, for the ground is wet.
We know (that) there are two kinds of sports.
He decided (that) he was not going to say anything about it
No one knows whether/if they have decided on the date of the meeting.
Could you tell me how I can get to the nearest subway station?
She told me what she had seen in the museum.
I think it necessary that everybody should try his best to help fight pollution.
(5) 由形容词sorry, afraid, sure, glad等引出的宾语从句。如：
We were surprised that Peter was the first to come.
I am sure that you will be a success in the future.
(1)由when, while, as, since, until, as soon as等连词引导的时间状语从句。如：
It's more than ten years since they came to Shanghai.
Please send me an E-mail as soon as you arrive in Switzerland.
We shall go for a picnic if it doesn't rain tomorrow.
I won't buy the dress unless it fits me well.
(3) 由because, since, as, now that等词引导的原因状语从句。如：
He asked for leave because he had to see the dentist.
Now that everyone is here, shall we begin our discussion?
Although it was very late, he went on working.
(5)由so that, in order that引导的目的状语从句。如：
He ran as fast as he could so that the people in Athens could learn the news earlier.
(6)由so... that, such... that等词引导的结果状语从句。如：
He ran so quickly that we couldn't keep up with him.
The bus broke down, so we had to walk to the cinema.
English is such a useful language that it is spoken in many countries.
(7) 比较状语从句。常用的句型有as... as与more than结构。（参见形容词、副词一章）
在复合句中作定语的从句称为定语从句。定语从句一般直接跟在被修饰的名词之后。被修饰的名词称为“先行词”。定语从句一般由关系代词who, whom, that, which引导，它位于先行词与定语从句之间，本身又在定语从句中充当某个成分。如：
The boy who/that is reading under the tree is my elder brother.
The present which/that you gave me for my birthday is very nice.
The woman who will give us a talk tomorrow is a famous professor.
Do you know the girl (whom) we met outside the school gate?
The story which tells about three monkeys is very interesting.
The magazine (which) I borrowed from the library was newly published.
The pictures that hang on the back wall were all painted by her.
The restaurants (that) they have set up are welcomed by children.
(4)如果先行词被序数词、形容词最高级、不定代词all, everything, nothing等以及only修饰时，关系代词必须用that。如：
All that we need is fresh water.
I'll never forget the first job that I found.
Judy is the most honest girl that I have ever seen.