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一、时态和语态
1. 如何解答时态问题 例1You’ve already missed too many classes this term. You ______ just last week.
A. missed B. would miss C. had missed D. have missed 例2Anne asked Tom ______ the key.
A. when he left B. where he had left C. how he left D. why did he left
2. 与完成时 有关的时态
★现在完成时 (have done) since, for/ in the past few months, up to now
例1Collecting
toy cars as a hobby becomes increasingly popular during the past fifty years.
A B C D 例2English ______ in a new way at my college in the past few years. A. has been taught B. was being taught C. has been taught D. had been taught.
★过去完成时 (had done)
例3Anne asked Tom ______ the key.
A. when he left B. where he had left C. how he left D. why did he left
例4The chemistry class_____ for five minutes when we hurried there. A. had been on B. had begun C. has been on D. would began
★将来完成时 (will have done) by
例5We’re late I expect the film_____ by the time we get to the cinema. A. had already started B. have already
C. will already have started D. have already been started. ★现在完成进行时 (have been doing)
例6It seems oil ___________ from this pipe for some time. We'll have to take the machine apart to put it right.
A. had leaked B. is leaking C. leaked D. has been leaking
★过去完成进行时 (had been doing)
★ 将来完成进行时(will have been doing )
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例7By the time you arrive this evening, _______for two hours. A. I will study B. I will have been studied C. I had studied D. I will have been studying. 3. 在时间和条件状语从句中不用将来时态 ▲用一般现在时代替一般将来时
例1When the mixture_____, it will give off a powerful force. A. will heat B. will be heated C. is heated D. has heated
例2please be sure to telephone me the next time you ______. A. will come B. would come C. shall come D. come
▲用现在完成时代替将来完成时
例3Smith is to study medicine as soon as he_______ military service. A. will finish B. has finished C. finish D. would finish
例4No one can be sure if the car on display fits him or her until he or she______ them.
A. tries B. will try C. are trying D. have tried 4. 考试小窍门
案。
二、情态动词
1. 几个情态动词的否定式的含义 can’t may not mustn’t need’t
2. 表示推测的几个情态动词用法 ★must
+do 对现在情况的推测 must
+have done 对过去情况的推测
例1I ________ asleep in the corner, for I remember nothing of what happened during the night
A. might fall B. must fall C. must have fallen D. can have fallen
★ can’t/could’t +do 对现在情况的推测 can’t/couldn’t
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+have done 对过去情况的推测
★ may/might not
+do 对现在情况的推测 may/might
+have done 对过去情况的推测 3. 情态动词的完成时虚拟语气的用法
needn’t have done should have done should not have done ought to have done could have done
4. 考试小窍门
词加完成时是正确答案。 × Must do
√ Must have done 三、虚拟语气
1. 条件句中的虚拟语气
I would ask George to lend us the money if I ______ him.
A. had known B. have known C. knew D. would know
If a better material ______, the strength of the part would have
been increased.
A. had been used B. had been using C. being used D. using
? 如果条件句中有were, had, shouldif
例3_____ the advice of his friends, he would not have suffered such a heavy loss in his business.
A. If he took B. if he should take C. Were he to take D. Had he taken
? 含蓄条件句中虚拟语气的应用
But for/without ??, otherwise/or? ??, but/though?.
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