题目内容
11.-Is Mr Li in his office?-No,he __________ in the office.He's ill in hospital.( )
A. | mustn't be | B. | can't be | C. | should be | D. | needn't be |
分析 句意:--李老师在他的办公室里吗?
--不,他不可能在办公室里.他生病住院了.
解答 答案:B.根据He's ill in hospital,可知他生病住院了,他不可能在办公室.mustn't不可以,表示禁止,所以不符合题意,故排除AC;而needn't表示"不必",与题意不符.不可能"用can't表示.故选B.
点评 本题实际是考查情态动词表示推测的情况,这很容易与以前学过的情态动词的用法相混淆.情态动词表示推测的情况,表示一般性推测用might、could等表示"可能";表示肯定推测用must表示"一定";否定推测用can't等.
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