情态动词
1.You ______ Jim anything about it. It was none of his business. (2004)
A. needn’t have told B. needn’t tell C. mustn’t have told D. mustn’t tell
(A，needn’t have done表明本无须做而干了。沒有mustn’t have done的方式，但可以说can’t have done，表明不太可能。)
2.He ______ the 8:20 bus because he didn’t leave home till 8:25. (1994)
A. couldn’t have caught B. ought to have caught
C. shouldn’t have caught D. must not have caught
(A，couldn’t have done表明不太可能干了某件事。)
3.He _____ unwisely, but he was at least trying to do something helpful. (1999)
A. may have acted B. must have acted C. should act D. would act
(A，may have done表明以往很有可能做了某件事，B表明一定做了，推断的概率非常大。)
语态
1.How can I ever concentrate if you _____ continually ____ me with silly questions? (97)
A. have … interrupted B. had … interrupted
C. are … interrupting D. were … interrupting
(C，现在进行时与always, continually, constantly并用表明某类含有感**彩，常常产生的姿势。本句蕴含责怪之义。)
2.Come and see me whenever ______. (97)
A. you are convenient B. you will be convenient
C. it is convenient to you D. it will be convenient to you
(C，whenvever正确引导的時间状语从句用一般现在时表未来;convenient一词只有说it is convenient to sb.)
3. For some time now, world leaders __ out the necessity for agreement on arms reduction. (02)
A. had been pointing B. have been pointing C. were pointing D. pointed
(B，如今完成进行时表明姿势从以往某一时间逐渐持续到现在，并很有可能再次。)
4.Jack _____from home for two days now, and I am beginning to worry about his safety. (03)
A. has been missing B. has been missed C. had been missing D. was missed
(A，跟上面一样。“伊丽莎白斯旺背井离乡二天(到现在还没有回)，我逐渐担忧他的安全性。”)
5. _________ conscious of my moral obligations as a citizen. (05)
A. I was and always will be B. I have to be and always will be
C. I had been and always will be D. I have been and always will be
(D， ABC三项前后左右2个语态不一致，仅有D项中现在完成时与将来时配搭一致。)语态
1.How can I ever concentrate if you _____ continually ____ me with silly questions? (97)
A. have … interrupted B. had … interrupted
C. are … interrupting D. were … interrupting
(C，现在进行时与always, continually, constantly并用表明某类含有感**彩，常常产生的姿势。本句蕴含责怪之义。)
2.Come and see me whenever ______. (97)
A. you are convenient B. you will be convenient
C. it is convenient to you D. it will be convenient to you
(C，whenvever正确引导的時间状语从句用一般现在时表未来;convenient一词只有说it is convenient to sb.)
3. For some time now, world leaders __ out the necessity for agreement on arms reduction. (02)
A. had been pointing B. have been pointing C. were pointing D. pointed
(B，如今完成进行时表明姿势从以往某一时间逐渐持续到现在，并很有可能再次。)
4.Jack _____from home for two days now, and I am beginning to worry about his safety. (03)
A. has been missing B. has been missed C. had been missing D. was missed
(A，跟上面一样。“伊丽莎白斯旺背井离乡二天(到现在还没有回)，我逐渐担忧他的安全性。”)
5. _________ conscious of my moral obligations as a citizen. (05)
A. I was and always will be B. I have to be and always will be
C. I had been and always will be D. I have been and always will be
(D， ABC三项前后左右2个语态不一致，仅有D项中现在完成时与将来时配搭一致。)
