一、用if或unless填空。

1. ______ he wants to see me, you can tell him to wait,

2. ______ it snows tomorrow, we'll have a day or two off.

3. We won't go to his party ______ he invites us.

4. She is sure to pass the examination ______ she is ill.

5. I'll take that computer ______ I have enough money.

6. ______ my grandma wears glasses, she can see better.

7. I won't buy that backpack ______ it costs less than ￥20.

8. ______ I'm tired, I'll have a rest for tea.

二、用所给词的正确形式填空。

1. If he __________(get) a low mark in the test, he __________ (study) harder;

2. If you __________ (swim) every day this summer, you__________(be) very healthy.

3. If he __________ (not hurry),he __________ (not see) the beginning of the match.

4. You can't go out unless you __________ (finish) your homework.

5. Unless I save my money carefully, I __________ (not be) able to buy a football.

6. If it __________(not rain) tomorrow, we __________ (go) to the park.

7. If he __________ (return) to the school, I __________ (let) you know.

三、句型转换。

1. People grow corn in the north of China. （改为被动句）

  Corn __________ __________ in the north of China.

2. Jim can’t decide what he should do next. （改为同义句）

  Jim can’t decide __________ __________ __________ next.

3. It took him two hours to play with a computer last night. （改为同义句）

  He __________ two hours __________ with a computer last night.

4. They are happy to see each other. (改为感叹句)

  __________ __________ they are to see each other!

5. Everyone should give back these books on time.（改为被动句）

  These books should __________ __________ back on time.

6. He has worked in this school for five years. (就划线部分提问)

  __________ __________ has he worked in this school?

7. From then on, the fox no longer came to the village. （改为同义句）

  From then on, the fox didn’t come to the village __________ __________.

四、选择题。

(    )1. If you ______ to the party, you’ll have a great time.

     A. will go     B. went     C. go       D. going

(    )2. What will father ______ us from Japan?

    A. take       B. bring      C. carry     D. make

(    )3. If you      the water, it       into gas.

    A. boil, turns   B. boil, will turn    C. will boil, turn    D. will boil, will turn

(    )4. I ______ her the answer if she ______me.

    A. can tell, will ask  B. will tell, will ask  C. would tell, ask   D. will tell, asks

(    )5. --What are you going to do tomorrow?

       --We’ll go to the library tomorrow if it ______.

  A. isn’t rain   B. rain    C. won’t rain   D. doesn’t rain

(    )6.--Do you know when he will come back tomorrow?

     --Sorry, I don’t know. When he ______ back, I’ll tell you.

A. comes     B. will come     C. come     D. may come

(    )7. What will you do if you ______ to the old folk’s home visit?

  A. go       B. went       C. going        D. will go

(    )8. I’ll give the book to him if he ______ here next Sunday.

 A. will come    B. comes    C. is coming     D. came

(    )9. There ______an English film in our school tomorrow.

     A. is going to have    B. will have    C. is going to be     D. has

(    )10. When my mother returned last night, I ______ a book.

      A. read     B. am reading   C. was reading   D. am going to read

(    )11. I won’ leave here until he       back.

      A. come        B. comes       C. will come      D. came

(    )12. I’ll wake you up when he ______back.

    A. will      B. is going to come      C. comes      D. come

(    )13. She will come to help us if she      too busy tomorrow.

     A. is        B. isn’t       C. will be      D. won’t be

(    )14. If I find his phone number, I       you.

     A. tell       B. told       C. will tell      D. have told

(    )15.       you don’t go to bed earlier, you will feel tired tomorrow.

A.Unless     B. If       C. Though       D. Until