if用法归纳

1. If you eat my food, I won’t talk to you. (P58)

2. I will die , I don’t have food, (P58)

3. What shall we do if it rains tomorrow?

5. She asked me if I was fond of music. 她问我是否喜欢音乐。

6. Can you tell me if they’re planning to come? 你能告诉我他们是否打算过来吗？

7. I don’t know if she’s coming. 我不知道她是否会来。

◇相关词组

☆if you want/like如果你愿意的话

You can come and stay with us if you want.

☆if so如果是的话

Are you planning to return to work, and if so, who is going to look after the baby?

☆if not如果不是的话

Has anyone dealt with the technical problems? And if not, why not?☆if necessary/if possible 如果必要/可能的话

We are ready to fight for our rights if necessary.

I should like to be back here by 10:30 if possible.

☆even if即使

I’d rather never sell this painting, even if they offered me a million dollars.

☆what if 要是……，那怎么办？如果……那会怎样？

What if the boss walked in here now and saw us?

☆as if好像是……

She always talks to me as if she was my sister.

◇相关练习

动词填空：

1. If it ______ (be) sunny tomorrow, I ______( walk) to school .

2. We ________ (not have ) our sports meeting if the

weather ____ (not be ) fine.

3. If it _______ (rain ), my father _____ (take ) me to school in his car .

4. Tigers _______ (hunt ) for their own food if they _____ (live) in the wild.

5. If wolves ________ (be) in the wild, they ______(live) as family groups.

6. If we don’t help the wild animals in danger, they ______ (die) soon.

单项选择：

( ) don’t know if he ______ tomorrow . If he _______, I will tell him about it .

A. will come; will come

B. comes ; comes

C. comes; will come

D. will come ; comes

( ) 2. If Simon ______ hard, he ______ good at English.

A. work; is

B. works; is

C. works; will be

D. will work; will be

( ) 3. He will come ________ you ask him.

A. whether

B. unless

C. if

D. while

( ) 4. If the phone _______, can you answer it ?

A. rings

B. is ringing

C. will ring

D. rang

( ) 5. Please give me a ring if you _______next Sunday.

A. won’t go

B. don’t go

C. not go

D. not to go

( ) you know if his school _____a sports meeting next month.

A. hold

B. holds

C. to ho ld

D. will hold

( ) are not sure if it ______tomorrow. If i t ______, we won’t climb the South Hill.

A. will now, snows

B. will snow, will snow

C. snows, snows

D. snows, will snow

( ) 8. If we do nothing, there_________ no more giant pandas.

A. will have

B. will has

C. will be

D. will be going to have

( ) 9. There_________ elephants if we don’t protect them.

A. won’t be any

B. will have no

C. won’t be some

D. will be some

( ) 10. ---- Do you want to go swimming this afternoon?

----Yes, if the weather_________ warm.

A. will be

B. would be

C. was

D. is