12. -I’m sorry, but were you speaking to me?

　 -Yes. Would you please _____ in this room?

A. don’t smoke　　　　　 B. not to smoke

C. not smoke　　　　　　 D. not smoking

答：C。Would you please后接省去to的不定式。

11. -Did your team lose the game?

-_____. Our players didn’t play so well as they could.

A. I’m afraid so　　　　　 B. 1 don’t think so

C. I believe not　　　　　 D. I hope so

答：A。其他选项与句童不符。

10. -Do you think you’ll get a pay rise next year?

-________.

A. I hope so　　　　 　　B. I’m afraid so

C. I believe not so　　　　 D. Who says it

答：A。I hope so. 我希望如此。

9. -Are you a student?

　 -No, but I________.

A. used to　　 　B. used　

C. used to be　 　D. used to was

答：C。 used to 也是不定式省略的一种形式，如Do you often go there? No, but I used to.但动词be一般不省。

8. The boy wanted to ride his bicycle in the street, but his mother told him _________

A. not to　　　 B. not to do

C. not do it　　 D. do not to

答：A。to保留，to后的动词省略。

7. Why_________ go with us?

A. not to　 B. don’t　 C. not　　 D. not you

答：C。不定式在why引导的问句中省去to。why not go 相当于 why don’t you go.

6. -1’11 be away on a business trip. Would you mind looking after my garden?

-Not at all. _________.

A. I’ve no time　　　　　 B. I’d rather not

C. I’d like it　　　　 　　D. I’d be happy to

答：D。此题考查不定式的省略。to保留，to后的动词省略。

5. -Do you think it’s going to rain over the weekend?

-_____.

A. I don’t believe　　　 B. I don’t believe it

C. I believe not so　　　 D. I believe not

答：D。Do you think (believe, suppose, expect) ...?等句式的肯定回答是 I think (believe, expect, suppose) so。其否定回答形式是 I think (believe, expect, suppose) not. 或 I don’t (think, expect, suppose) so。

4. -Would you like to go with us?

　 - _______, but I’m busy now.

A. I’d love　 　　B. I’d love to

C. I love　　 　　D. I’d like

答：B。不定式的省略分两类；1. 省去to的用法。①在would rather, had better, would rather...than等句式中省去to。②在why的问句中省去to。③情态动词(ought除外)接省去to的不定式。④不定式在感观动词和使役动词后做宾补时省去to。2. 保留to，to后的动词省略，如I’d love to/I’d like to/I’m going to/try to/mean to/plan to/hope to/wish to.

3. He would rather die than ________.

A. giving in　 　　B. give in

C. to give in　 　D. gave in

答：B。 would rather...than...表示“宁愿……而不……”，后接省去to的不定式。