第四单元知识点

一．语法：

状语从句：

1.含义：在主从复合句中修饰主句中的动词，形容词，副词等的从句。

2.分类：时间状语从句，原因状语从句，让步状语从句，目的状语从句，地点状语从句

等等。

1)when引导的时间状语从句：

when意为“当......时；在......时”，可表示“时间点”或“时间段”，引导的从句可以用延续性动词，也可以用非延续性动词。用when时，从句的动作可与主句的动作同时发生，也可以先于主句的动作发生。

When I got home, he was having supper.

When he was a boy of five, he began to learn English.

When you exercise, it makes your bones stronger.

○补：时间状语从句常用一般现在表示将来的意义，也就是“主将从现”。

(1)When I grow up, I will join the army.

(2)When they hear this, they will be very angry.

2)because引导的原因状语从句：

because意为“因为”，用来回答由why提问的问句。但它引导的从句一般不放在句子开头。

I missed the train because I got up late.

Bones are important because they help us move freely.

2)although或though引导的让步状语从句：

意为“尽管，虽然”，although比though正式更加，语气更强。一般情况下可以互换。

Although/Though it was rained hard, we still worked in the field.

=It was rained hard, but we still worked in the field.

Although/Though they are very light, bones are strong enough to support our weight.

练习：

1.Sarah’s mother can’t make supper, ______ she has a sore hand.

A. so

B. because

C. but

D. although

2. Her grandparents are still in good health_____ they are over eighty.

A. though

B. as soon as

C. until

D. because

3. ---Would you like some milk?

---No, thanks. I don’t like it, ______ I know it’s good for my health.

A. because

B. although

C. if

D. but

4. ___I got back, I found my mother was cooking for me.

A. When

B. Before

C. Since

D. Although

5. _____many children like sugar, I think they had better try not to eat it

too often.

A. Because

B. When

C. Although

D. If

6. Tony never spends money on buying books____ he doesn’t like reading.

A. but

B. because

C. though

D. until

7. Amy was reading a book____ I came in.

A. when

B. while

C. because

D. though

8.____they have some opposite views, they all think Chinese medicine is

helpful.

A. Until

B. Although

C. Since

D. Because

9. Because he missed the train _____ he couldn’t get there on time.

A. so

B. /

C. but

D. though

10. _____It rained hard, but we still went there.

A. Although

B. Though

C. /

D. Because

11. _____I grow up, so I can dress myself.

A. Because

B. /

C. But

D. When

12. Though he is a child,____ he can do everything very well.

A. because

B. but

C. /

D. so

二．句型：

用来询问对方情况或询问病人病情的常用语：

(with sb.)?

=What’s the trouble? 意为“(某人)怎么了？”

=What’s wrong?

3)回答：

如果没事：Oh, it’s OK./It’s nothing.

如果有事：I have a headache/fever/ cold.../I don’t feel very well.

Eg. (1)---What’s the matter, Tom?

---I don’t feel very well.

(2)What’s the matter with your?

练习：

1.What’s the matter____ you?