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1.John _______ such a thing about you.He never speaks ill of you behind your back..(  )
A.can't have saidB.might not have said
C.couldn't sayD.mustn't have said

分析 约翰不可能说那样的关于你事.他从来不在你背后说坏话.

解答 答案是A.本题考查表示推测的情态动词的用法.情态动词must表示推测只能出现在肯定句中,表示有客观依据的推测"准是,一定是",所以排除D;might表示推测往往出现在肯定句或否定句中表示不太肯定是推测"也许";can/could表示推测往往出现在否定句中,表示"不可能";根据下文"他从不在背后说坏话"推断"John不可能那么说你",排除B.对已经发生的事件的说明用"情态动词+have done"的结构,所以答案是A.

点评 在正确理解情态动词的基本含义的基础上,整体理解语境中的情感态度,做出合理的判断.

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