八年级状语从句(一)

状语从句精讲

状语从句在复合句中作状语，修饰动词、形容词或副词等。状语从句可以表示时间、条件、原因、地点、目的、结果、让步、方式、比较等意义。

知识梳理：提纲挈领，抓住重点和难点！

各类状语从句连接词（短语）一览表：

时间 when, while, as, as soon as, since, until, after, before

I will telephone you as soon as I arrive in Shanghai.

She wants to be a teacher when she grows up.

My mother came in while I was reading last night.

条件 If, unless

We will visit the museum if it doesn’t rain tomorrow.

Our sports meeting will continue unless it rains tomorrow.

原因 As, because, since, now that

Tom didn’t go to school today because he was ill.

Since he will not do it, I have to ask someone else.

We have to go as it’s getting late.

The day breaks, for the birds are singing.

Now that you are free today, you may have a rest at home.

地点 Where

I found the book where you left it.

目的 So that, in order that

Read slowly so that everyone can follow you.

结果So that, so…that, such…that

She was so angry that she couldn’t say a word.

She is such a lovely girl that we all like her.

让步 though, although, even if, however

Though he was very tired, he still worked hard.

方式 As

I did as you told me.

比较than, (not)as…as,

The work isn’t as easy as I thought.

The more you exercise, the healthier you will be.

易混词解析：举一反三，学的更轻松！

1. while, when, as的区别：

when既可以指"时间点",与瞬间动词连用，也可以指"时间段"，与延续性动词连用（=while）。如：

When he came in, his mother was cooking.

When (While) we were at school, we went to the library every day.

While表示时间段,因此，while 从句的谓语动词要用延续性动词。如：

Please don't talk so loud while others are working.

As与when用法相似，但着重强调主句动作与从句动作同时发生，有"随着……"或"一边……一边……"之意。如：

As you get older, you get more knowledge.随着年龄的增长，你获得的知识就越多。

2．Because, as, since 的区别：

Because用于表示直接原因,回答why提出的问题，语气最强since表示显然的或已知的理由或事实，常译成"既然"，语气比because弱，主句的内容是全句句意的重心所在。

as 引出的状语从句，一般位于主句之前，表示的原因语气最弱。如：

Water is very important because we can't live without it.

I'll do it for you since you are busy.

We have to stay at home as it is raining.

3．such…that, so…that, so that 引导结果状语从句的区别：

such是形容词，修饰名词; so 是副词，修饰形容词或副词。其结构如下：

1) such + a (n)+ 形容词+单数可数名词+that……

2) such+形容词+复数可数名词+that ……

3) such +形容词+不可数名词+that……。如：

This was such a good film that I went to see it several times.

They are such good books that they sell well.

It was such bad weather that I had to stay at home.

He spoke so fast that I couldn't follow him.

He is such a lovely boy that we all like him.

=He is so lovely a boy that we all like him.

注：在"形容词+可数名词复数/不可数名词"结构中，当名词前有many, much, few, little 表示数量的多少时，名词前用so。如：

She made so many mistakes that she didn't pass the exam.

练习与巩固：熟能生巧，取得好成绩！

选择合适的连接词，完成下列句子。

1. Jim spends a lot of money on books ______he is not rich.

2. Kate fell into sleep ______she was listening to the music.

3. ----Is David at school today?

----No. He is at home ______he has a bad cold.

4. We won't have supper ______my mother comes back.

5. Speak to him slowly ______he may understand you better.

6. I’ll help you, ____ I don’t sleep for a night.

7. It is four years ______I had left that small village.

8. Jane, please turn off the lights ______ you leave the classroom.

9. We will go to the park ______it doesn't rain tomorrow.

10. _____ many children like KFC, I think they had better try not to eat it too often

11. There are few new words in the passage ______we can't understand it.

12. Go back ______you come from.

13. The train had left ____ he reached the station yesterday.

14. ----Do you have a swimming pool?

----No, we don't. At least, not ______big ______yours.

15. I haven’t heard from him ____ he went to America.

16. It is raining hard, ______we have to stay at home.

17. ______you work harder, you'll never pass the final exam.

18. Look after the children ______I am out.

19. The village is ______far away ______I can't get there on foot.

20. That is ______an interesting book ______I can't stop reading it.

21. She sang ____ she went along.

22. Don’t leave the room ____ you have finished the work.

23. We found the key ____ she had left it.

24. ____ she is young, she knows quite a lot.

25. It is ____ hot in the room ____ we have to go out for a walk.