新编英语语法教程 第17讲练习参考答案

新编英语语法教程 第17讲 练习参考答案

Ex. 17A

1. can type 2. can answer 3. could never understand 4. could solve 5. (What you say) might be 6. Shall I open…? 7. will come 8. Would you have…? 9. will put 10. will sit 11. would hit 12. sould sit 13. You should read 14. We must read 15. You must not smoke 16. Can you do 17. Should we wait? 18. We need not attend 19. That will be 20. that must be

Ex. 17B

a) 1. needn’t (= don’t have to, don’t need to, haven’t got to)

2. won’t have to

3. didn’t have to (= didn’t need to) 4. needn’t

5. didn’t have to 6. didn’t have to 7. needn’t 8. needn’t

9. won’t have to 10. needn’t b)

11. You had to… 12. He wasn’t to… 13. He wasn’t to… 14. You had to…

15. He said I wasn’t to… 16. They had to.. 17. We had to… 18. I wasn’t to…

19. He said you weren’t to… 20. We had to…

Ex. 17C

1. should 2. should 3. Would, should 4. would 5. should 6. would 7. should, would 8. should 9. should 10. would, would 11. should 12. would, would 13. should 14. would, would 15. should 16. should 17. Should 18. would, should 19. would 20. should, should / would

Ex. 17D

1. He may be doing his homework.

2. She may have forgotten to call me back.

3. Could you lend me 5 pounds until tomorrow? 4. I wonder if I could leave now. 5. It might rain this evening.

6. Old Tom might have left San Diego.

7. If it should rain tomorrow, the football match would be put off. 8. You should do as he says.

9. If you should change your mind, please let me know. 10. I’m surprised that he should have an accident. 11. Shall I go with you?

12. You shan’t answer her back again.

13. You mustn’t violate the traffic regulations again. 14. He must have got lost in the mountains. 15. You needn’t go and see him. 16. You needn’t have written to her. 17. You should have helped her.

18. If you would change this car, I should be very grateful. 19. Would you mind shutting the door? 20. She shouldn’t have bought that house. 21. It’s odd that she should say that.

22. Don’t call him. He’ll be taking a nap.

23. Don’t write to him. He won’t be home now. 24. Don’t bother him. He will have heard the news. 25. A lion will attack people only when hungry. 26. What will you do after graduation? 27. Mary ought to be home by now.

28. You oughtn’t to have bought a new car.

29. He used to work in Shanghai, but now he is nowhere to be found. 30. How dare you say that in the presence of the principal?

Ex. 17E

1. He may be working for Simons.

2. He may have been working for Simons. 3. He may be retiring next year. 4. He won’t be working now. 5. He’ll have heard it by now.

6. They may have been wondering what to do. 7. He can’t have lost it. 8. They must be waiting. 9. That might be true.

10. She should be home by now. 11. She may have left it at home. 12. I may have been mistaken.

13. You must have been disappointed. 14. She won’t have heard the news yet. 15. There must have been a mistake.

16. He won’t be there. 17. He can’t be there.

18. He couldn’t have made that mistake. 19. Will this be the one you want?

20. You will have been wondering all this time how it works.

Ex. 17F

1. may 2. might have 3. may have 4. possibly 5. possible 6. perhaps 7. might 8. can 9. may have had 10. could 11. might be

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