题目内容
11.You have a big mouth,Tom.You ___ have told everybody the secret.( )A. | can't | B. | mustn't | C. | shouldn't | D. | mightn't |
分析 Tom,你真是个大嘴巴.你不应该把这个秘密告诉每个人.
解答 答案:C
句意表达的是与事实相反的假设,要用虚拟;对过去事实的相反假设,要用情态动词加完成时态来构成,表示不应该做却没有做的事,其否定形式表示本不应该做却做了的事情;can't不可能,mustn't不许,shouldn't不应该,mightn't也许不.故选C.
点评 虚拟语气是表示与事实相反的假设,构成方式有:对现在或将来,条件句中用一般过去时态,主语用情态动词加动词原形;对过去,条件句中用过去完成时态,主语用情态动词加完成时态.学习时,要牢记构成方式.
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