练习题

1.  If I _____  you, I ____  very happy.

A. were, would be     B. am, shall be 

C. were, shall be      D. am, would be

2.  If he had not lost his money, he ____ the piano last week.

      A. would  buy        B. had  bought

      C. could have bought    D. bought

3. ____I known it, I should have told him.

       A. Have    B. Had 

       C. Having   D. If

4. ____ the clouds, you would find the airplane in the sky easily.

    A. Were it not for   

    B. If it had not been for

     C. If it were not    

      D. Had it not been for

5. If I had known that, I ___  so.

       A. wouldn’t do     B. won’t do

       C. didn’t do      D. wouldn’t have done

6. If it ___ so hard, we’d go to town.

     A. isn’t raining   B. weren’t raining

     C. doesn’t rain     D. isn’t going to rain

参考文章19.1If引导的从句是真实的

19.2If引导的从句与现在的事实相反------虚拟语气

19.3If引导的从句与过去的事实相反

19.4If引导的从句与将来的事实相反的笔记

1.答案A    2答案C  3.答案B  4.答案A  5.答案D

6.答案B

7. He _____ you if you ____ to see him that afternoon.

  A. might tell, were going    

  B. told, were going

  C. might have told, had gone 

  D. should tell, went

8. If you had started sooner, you ____ there.

      A. may have got      B. might have got

      C. shall have got      D. must have got

9. If we were to be 2oo years old, we ____ everything.

A. will change      B. can change

C. could change     D. shall change

10. I don’t think that I shall fail, but if I ___ I would try again.

A. fail             B. would fail

C. should fail        D. had failed

11. If you ____ to see Mary, what would you tell her?

A. are              B. will be going

C. must             D. were

12. If the train leaves at half past ten, there ____ no time to lose.

A. would            B. is

C. will              D. has

7.答案C   8.答案B   9.答案C   10.答案C  11.答案D

12.答案B