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You ________ be hungry already — you had lunch only two hours ago!
A.wouldn’tB.can’tC.mustn’tD.needn’t
B

试题分析:A. wouldn’t不会 B. can’t不可能         C. mustn’t 禁止        D. needn’t没有必要;句意:你不可能已经饿了,两小时之前才吃过午饭。故选B
点评:情态动词是高考的热点,can’t表示不可能,can用于肯定句中表示理论上的可能性,情态动词除了表推测外,还可以表达另外的意思,如must理解为必须,由这个词所开头的问句,肯定回答用Yes,you must.否定回答用No,you needn’t或者是No,you don’t have to.注意不用mustn’t,因为mustn’t表示例行禁止的含义。
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