英语学习资料
状语从句
【考点直击】
用来修饰主句中的动词，副词和形容词的从句叫状语从句。根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句， 原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。
1. 时间状语从句：时间状语从句常用when, as, while, before, after, since, till, until, as soon as等连词来引导。例如：
It was raining hard when got to school yesterday.
While he was doing his homework, the telephone rang.
He had learned a little Chinese before he came to China.
(2)在时间状语从句里，通常不用将来时态，用现在时态表示将来的动作或状态。例如：
I’ll ring you up as soon as I get to New York.
(3)在带有till或until引导的时间状语从句的主从复合句里，如果主句用肯定式，其含义是“一直到……时”，谓语动词只能用延续性动词。如果主句用否定式，其含义是“直到……才……”, “在……以前不……”, 谓语动词可用瞬间动词。例如：
The young man read till the light went out。 We won’t start until Bob comes.
2. 条件状语从句
(1)条件状语从句通常由if, unless引导。例如：
What shall we do if it snows tomorrow? Don’t leave the building unless I tell you to.
(2)在条件状语从句里，谓语动词通常用现在时态表示将来的动作或状态。例如：
I’ll help you with your English if am free tomorrow. He won’t be late unless he is ill.
(3)“祈使句 + and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。例如：
Hurry up, or you’ll be late. =If you don’t hurry up, you’ll be late.
Study hard and you will pass the exam. =If you study hard, you will pass the exam.
3. 原因状语从句
(1)原因状语从句通常由because引导。例如： He didn’t come to school because he was ill.
(2)because表示直接原因，语气最强。Because引导的原因状语从句多放在主句之后。回答由why提出的问题，只能用because。例如： --Why aren’t going there? --Because I don’t want to.
(3)because和so不能同用在一个句子里。
4. 结果状语从句：(1)结果状语从句由so…that, such…that, so that引导。例如：
He is so poor that he can’t buy a bike for his son.
She is such a good teacher that everybody likes her.
My pencil fell under the desk, so that I couldn’t see it.
(2)so…that语such...that可以互换。例如：
在由so...that引导的结果状语从句中，so是副词，与形容词连用。其结构是: “...so + 形容词（副词）+ that + 从句”。例如：He was so glad that he couldn’t say a word.
The hall is so big that it can hold 2,000 people.
Mother lives so far away that we hardly ever see her.
在由such…that引导的结果状语从句中，such是形容词，它修饰的可以是单数或复数可数名词，也可以是不可数名词；名词前面可以带形容词，也可不带。如果是单数可数名词，前面需加不定冠词a或an。例如：It was such a hot day that nobody wanted to do anything.
He had such long arms that he could almost touch the ceiling.
He made such rapid progress that he did very well in the mid-term.
有时上述两种结构是可以互换的。例如：
It was such a wonderful film that all of us wanted to see it again.
=The film was so wonderful that all of us wanted to see it again.
It is such an important match that nobody wants to miss it.
=The match is so important that nobody wants to miss it.
(3)如果名词前由many, much, little, few等词修饰时，只能用so, 不用such。例如：
Soon there were so many deer that they ate up all the wild roses.
He has so little time that he can’t go to the cinema with you.
5. 比较状语从句：比较状语从句通常由as…as, 比较级 + than…等连词引导。例如：
Tom runs faster than John does. This classroom is as big as that one.
6. 目的状语从句：通常由 so that, in order that引导。例如：
We started early so that we could catch the first train.
We used the computer in order that we might save time.
7. 让步状语从句：(1)让步状语从句通常由although, though等连词引导。例如：
Though he is young, he knows a lot. Although I am tired, I must go on working.
(2)although(though)不能用在同一个句子中。例如：
我们不说：Though it was raining hard, but he still went out.
应说：Though it was raining hard, he still went out. 或It was raining hard, but he still went out.
单项填空
1. _______ he’s old, he can still carry this heavy bag. A. Though B. For C. So
2. ---Do you know if he _______ to play basket ball with us?
---I think he will come if he ______ free tomorrow.
A. comes; is B. will come; is C. will come; will be
3. In the zoo if a child _____ into the water and can’t swim, the dolphins may come up to help him. A. will fall B. falls C. is falling
4. We will stay at home if my aunt ___ to visit us tomorrow. A. comes B. come C. will come
6. I was late for class yesterday _______ there was something wrong with my bike.
A. when B. until C. because
7. I’ll go swimming with you if I ________ free tomorrow. A. will be B.. am C. was
8. In the exam, the ________ you are, ______ the _______ mistakes you will make.
A. careful; little B. more careful; fewest C. more careful; fewer
9. You should finish your lessons ___ you go out to paly. A. before B. after C. when D. while
10.. The teacher spoke louder_____all the students could hear him.
A. so that B. because C. in order
11. It is ______ that we’d like to go out for a walk.
A. too lovely a day B. so lovely a day C. such lovely a day
12. Mary had ______ much work to do that she stayed at her office all day.
A. such B. so C. too D. very
13. ___I felt very tired, I tried to finish the work. A. Although B. Because C. As
14. Write to me as soon as you ____to Beijing. A. will get B. get C. got
