8. I didn’t hear the phone. I___________ asleep.

A. must be　　　 B. must have been

C. should be　　　 D. should have been

答：B。从句子的时态didn’t hear可判断出B项。

7. Where is my pen? I________it.

A. might lose　　　　 B. would have lost

C. should have lost　　 D. must have lost

答：D。在使用情态动词表示推测用法时，首先应掌握其推测用法的基本句式：can主要用于疑问或否定句中表示推测；may常用于肯定或否定句中表示推测；must用于肯定句中表示推测。

can　　　　　　　　 一般式　 对现在情况的推测

may　　 +不定式　　 完成式　　 对过去情况的推测

must　　　　　　　　 进行式　 想必正在做

　　　　　　　　　 完成进行式　 想必一直在做

6. You___________ return the book now. You can keep it till next week if you like.

A. can’t　　　　　　 B. mustn’

　C. needn’t　　　　 D. may not

答：C。needn’t表示“不必”。从后一句可判断出C项。

7. The plant is deaD. I________ it more water.

A. will give　　　 B. would have given

C. must give　　　 D. should have given

答：D。 should have done 本应做但实际上没有做的事

4. There was plenty of time. She_______.

A. mustn’t have hurried

　B. couldn’t have hurried

C. must not hurry　　

D. needn’t have hurried

答：D。 needn’t have done 本不必做但实际上做了的事

3. I thought you ________like something to read, so I have brought you some books.

A. may　　 B. might　　 C. could　　 D. must

答：B。thought为过去式，must没有过去式，could一般只用于疑问或否定句中表示推测。

2. You’re late. You __________ here earlier.

A. should come　　　 　　B. ought to come

C. should have come 　　D. ought have come

　　 　　should have done 本应该做但实际上没有做到的事

答：C。　 needn’t have done本来不必做但实际上做了的事

　　 　　oughm’t to have done本不该做但实际上做了的事

　　 　could have done本来能做但役有做的事

这类结构通常表示责备、埋怨或遗憾的语气。

1. I _____ like someone to take me to the theatre.

A. will　　 B. may　 C. would　　 D. shall

答：C。would like (love) to...为固定用法，表示“宁愿”。

30. -Will you go skiing with me this winter vacation?

-It________.

A. all depend　　　　　　 B. all depends

C. is all depended　　　　　 D. is all depending

答：B。 It all depends. 那要看情况而定了。

29. -Hi, I’m glad m see you.

　 -_________.

A. Thank you　　　　 B. Me, too

C. My name is Mary　　 D. I’m glad to hear that

答：B。Me, too. = I’m glad to meet youtoo. 如：

-I don’t quite like the idea.

-Me, too. =l don’t quite like the idea, either.