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题目
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I was really anxious about you. You____ home without a word.
A.mustn’t leaveB.shouldn’t have leftC.couldn’t have leftD.needn’t leave

答案
B
解析

试题分析:句意,我真的很担心你,你本不应该一句话都不说就离开家。“shouldn"t+have+done”表示本来不应该做某事,而实际做了。含有指责对方或自责的含意,故选B。
点评:情态动词+have done的用法,“would+have+done”虚拟语气,表示对过去事情的假设,意思是“本来会做”。“could+have+done”是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做。 “must+have+done”表示对过去事情的肯定推测,译成“一定做过某事”,该结构只用于肯定句。“can"t+have+done”表示对过去事情的否定推测,译成“不可能做过某事”。“can+have+done”表示对过去行为的怀疑,用于疑问句,译成“可能做过……吗?”。“could+have+done”是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做。“may+have+done”表示对发生过的事情的推测,意思是“可能已经”或“也许已经”,用于肯定句中。 “might+have+done”表示对过去事情的推测,might与may意思相同,但可能性更小。多用于虚拟语气结构中。 “would+have+done”虚拟语气,表示对过去事情的假设,意思是“本来会做”。“should+have+done”意思是“本来应该做某事,而实际没做。” “shouldn"t+have+done”表示本来不应该做某事,而实际做了。含有指责对方或自责的含意。 “ought to+have+done”表示过去应该做而实际并没有做,译成“理应做……”,往往表示遗憾。与“should+have+done”用法基本一样。“need+have+done”表示本来需要做某事而没有做。“needn"t+have+done”则表示“本来不需要做某事而做了”。would like to have done sth 本打算做某事would rather +have done 当时宁愿做了或没做。
核心考点
试题【I was really anxious about you. You____ home without a word.A.mustn’t leaveB.sho】;主要考察你对动词的分类等知识点的理解。[详细]
举一反三
A giant of a man was standing in the doorway. His face was almost completely hidden by a long and untidy hair and a wild beard, but you ______ make out his eyes, shining like black beetles under all the hair.
A.mightB.couldC.shouldD.would

题型:不详难度:| 查看答案
David, you _____play with the valuable bottle; you_______ break it.
A.won’t; can’t B.mustn’t; may
C.shouldn’t; must D.can’t; shouldn’t

题型:不详难度:| 查看答案
---- May I smoke here?
--- If you      , choose a seat in the smoking section.
A.shouldB.couldC.mustD.may

题型:不详难度:| 查看答案
–When can I get the result of the test, sir?
–You ____ have it next Friday.
A.couldB.shallC.mustD.may

题型:不详难度:| 查看答案
—How is the debate of your essay?
—It ____ well, but I ____one of the key points.
A.might work; hadn’t forgotB.needn’t have worked; forgot
C.could have worked; forgotD.would work; hadn’t forgot

题型:不详难度:| 查看答案
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