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How ________ I help them to understand when they don’t listen?
A.mustB.dareC.canD.may
C

试题分析:情态动词词义辨析。A一定,必须;B敢;C可能;D也许;句意:当他们不听的时候,我怎么能够帮助他们理解呢?根据句意说明C正确。
点评:情态动词就是表示说话者对事情的一种看法,也就是一种语气。情态动词的用法一直是命题者常设置的考点和重点,平时要加强记忆。值的注意的是,中学阶段的情态动词常考额有13个,can-could may-might should-ought to had better will-would   need  have to .考生应注意对这13个情态动词的用法多总结,多运用。
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