题目内容
12．-Must I finish the work today？-No，you ．（ ）| A． | needn't | B． | mustn't | C． | shouldn't | D． | can't |
分析 --我今天必须完成工作吗？
--不，你不必．
解答 答案：A．
根据No，可知下面为否定回答，must的含义是必须一定，其否定形式mustn't表示禁止的含义．在这里不是禁止的意思．must的否定回答一般可借助于needn'和don't have to来构成，表不必．故选A．
点评 本题考查了情态动词的用法．注意must的用法以及它的肯否定形式．
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