1.I________to my cousin’s birthday party last night，but I was not available. 

A.went B.had gone

C.would go D.would have gone

答案 D

解析 2.It ________be the vocabulary that caused you the problem in the exercise because you know a lot of words.

A.may B.couldn’t

C.should D.needn’t

答案 B

解析 3.I should not have laughed if I________you were serious.

A.thought B.would think

C.had thought D.have thought

答案 C

解析 考查虛擬語氣。句意為：如果我當時想到你是認真的，我就不會笑了。由句意知，此句是與過去事實相反的虛擬語氣，故從句結(jié)構(gòu)為had done。

4.—Why are your eyes so red?You________have slept well last night.

—Yeah，I stayed up late writing a report.

A.can’t B.mustn’t

C.needn’t D.won’t

答案 A

5.My mom suggests that we ________ eat out for a change this weekend.

A.should B.might

C.could D.would

答案 A

解析 句意為：母親提議這個周末出去吃飯換換口味。suggest(建議)接賓語從句時謂語動詞用(should)do。

6.Since nobody gave him any help，he ________ have done the research on his own.

A.can B.must

C.would D.need

答案 B

7.If we________a table earlier，we wouldn’t be standing here in a queue.

A.have booked B.booked

C.book D.had booked

答案 D

解析 考查虛擬語氣。句意為：如果早些預訂飯桌，我們現(xiàn)在就不會站在這兒排隊了。if從句是對過去情況的假設，故用過去完成時態(tài)。

8.—You needn’t take an umbrella.It isn’t going to rain.

—Well，I don’t know.It________do.

A.might B.need

C.would D.should

答案 A

解析 考查情態(tài)動詞用法。句意為：——你不必帶傘。天不會下雨。——我不知道，可能會下雨吧。might“可能”，表推測，且可能性較小。

9.Harry is feeling uncomfortable.He________too much at the party last night.

A.could drink B.should drink

C.would have drunk D.must have drunk

答案 D

解析 10.No one________ be more generous;he has a heart of gold.

A.could B.must

C.dare D.need

答案 A

解析 考查情態(tài)動詞。句意為：沒人比他更慷慨;他有一顆金子般的心。“No one could be more generous”是否定詞和比較級連用，表達最高級含義，A項could可以在否定句中表示推測，為正確答案。B項表推測，只用在肯定句中;dare和need不符合句意。

11.If he had spent more time practising speaking English before，he________able to speak it much better now. 

A.will be B.would be

C.has been D.would have been

答案 B

解析 考查虛擬語氣。句意為：如果以前他花更多時間練習說英語的話，現(xiàn)在他英語就會說得好多了。由從句中的had spent可知從句與過去事實相反;由主句中的now可知主句與現(xiàn)在事實相反，故用would be。本題實際上是考查錯綜時間的虛擬語氣。

12.He________sleep，although he tried to，when he got on such a hunt for an idea until he had caught it.

A.wouldn’t B.shouldn’t

C.couldn’t D.mustn’t

答案 C

解析 考查情態(tài)動詞的辨析。wouldn’t不會;shouldn’t不應該;couldn’t不能;mustn’t禁止。根據(jù)語境可知，他顯然是“不能”入睡，根據(jù)句中的although he tried to可知這里說的是過去的事情，所以用cannot的過去式。