17. Last summer I took a course on________.

A. how to make dresses　　　

　B. how dresses be made

C. how to be made dresses

D. how dresses to be made

答：A．不定式短语的构成由疑问代词what，which或疑问副词when，where，why，how等接不定式构成，疑问代词傲不定式的宾语，疑问副词做不定式的状语。如：I don’t know what to do / how to do ito 不定式短语的作用相当于名词性的从句，在句中可做主语，宾语和表语。

16. She reached the top of the hill and stopped ________ on a big rock by the side of the path.

A. to have rested　 B. resting

C. to rest　 　　　　D. rest

答：C。stop doing停止做，stop to do停下来去做。

15. ______ more attention, the trees could have grown better.

A. Given　　　　 B. To give　　　

　C. Giving　　　　 D. Having given

答：A。分词做状语时，分词的逻辑主语应和句子的主语一致。

14.　 _______ your coat at once. We must hurry.

A. Wear　　　　 B. Wearing　　

　C. Put on　　　　 D. Putting on

答：C．puton指动作，wear指状态，此处是祈使句。

13. -Good morning. Can I help you?

　 -I’d like to have this package ____, madam.

A. be weighed　　　　　 B. to be weighed

C. to weigh　　　　　　 D. weighed

答：D。have sth. done

12. She pretended _______ me when I passed by.

A.　 not to see 　　B. not seeing

C.　 to not see　 　　D. having not seen

答：A。pretend to do / not to do / to be doing / to have done...

11. -What do you think of the book?

-Oh, excellent. It’s worth _____ a second time.

A. to read　　　 B. to be read　　

C. reading　 　　D. being read

答：C。 be worth doing...

10. There was a terrible noise ______ the sudden burst of light.

A. follow　 　　　B. following

C. to be followed　　　　 D. being followed

答：B。先有闪电后有声音，所以应选B项。如：

The teacher went into the classroom, followed by some students.

Following their teacher, the students went into the classroom.

9. Go on_______the other exercise after you have finished this one.

A. to do　　　　 B. doing　

C. with　　　　 D. to be doing

　　　　　　　　　 go on to do...接下来傲另外一件事

答：A．注意区别　　 go on doing...接着做原来的事

　　　　　　　　 (go on with+n.继续做某事

8. Do you know the boy ___ under the big tree?

A. lay　　 B. lain　 　C. laying　　　 D. lying

答：D。注意以下三个动词的不同形式：

lie (躺) lay lain

lie (说谎) lied lied　　 lying

lay (放) laid laid laying