經典練習：1.I didn’t send out my application form last week, but I _____.A)hadB)would doC)should haveD)might have to2、With all his work on hand, he_____to the cinema last night.A)mustn’t goB)wouldn’t goC)oughtn’t goD)shouldn’t have gone3、By next summer he_____at Harvard University for five years.A)will have been studyingB)will studyC)have studiedD)will be studying4、When Jim____his own house, he will install built-in stereo speakers in every room.A)hasB)will haveC)hadD)had been 經典練習：1、I _____to him because he phoned me shortly afterwards.A)ought to have writtenB)must have writtenC)couldn’t have writtenD)needn’t have written2、You_____all those calculations! We have a computer to do that sort of thing.A)needn’t have doneB)must not have doneC)shouldn’t have doneD)can not have done3、This is one of the rarest questions that_____at such a meeting.A)has ever been raisedB)are raisedC)have ever been raisedD)is raised4、I will overlook ____so rude to my sister this time.But don’t let if happen again.A)you to be B)you to have beenC)your beingD)your having been經典練習：1、He won’t be free Saturday morning. He_____a meeting.A)shall be attendingB)is attendingC)has attendedD)shall have attended2、She_____to see you yesterday, but it rained heavily then.A)wished to have comeB)must have comeC)cameD)had to come3、The structure of aircraft____all the time.A)is being changedB)has been changedC)is been changedD)is being changing4、Three offices narrowly escaped_____in the fierce battle.A)to be killedB)to killC)having killedD)being killed

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CDAA DACD BAAD不是情態動詞嗎?怎么還有虛擬語氣和其他的?