She ____ the film. She knows nothing about it.A.can’tseeB.can’thaveseenC.mustsee
题型:不详难度:来源:
She ____ the film. She knows nothing about it.A.can’tsee | B.can’thaveseen | C.mustsee | D.mustn’thaveseen |
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答案
B |
解析
试题分析:考查情态动词的完成式:根据句意:她不可能看过这个电影,因为她对电影一无所知,可知是对过去的事情的推测,用情态动词的完成式,can’t have done不可能做过…,must表示推测的时候,只能用于肯定句,选B。 点评:情态动词+have done可以表示推测和虚拟:“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”。“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。“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。 “would+have+done”虚拟语气,表示对过去事情的假设,意思是“本来会做”。 |
举一反三
Mary is ill today. If she ______ ill, she _______ absent from school.A.weren’t; couldn’t be | B.wasn’t; wouldn’t have been | C.wasn’t; wouldn’t be | D. weren’t; won’t be |
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— Nowadays people seem to be becoming more and more selfish. — How much better life would be if we ______ to the values of the past!A.would return | B.had returned | C.return | D.were to return |
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It’s a pity that you ______ leave so soon. Your uncle will be home in 10 minutes and he misses you so much.A.should | B.could | C.can | D.might |
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I’m really sorry, Lucy. I ______ to help you, but I was too busy at that time.A.meant | B.mean | C.had meant | D.have meant |
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If you ______ firm action to deal with it at once, you wouldn’t suffer heavy losses tomorrow.A.take | B.took | C.has taken | D.had taken |
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