题目内容
16．-Must I go to see a doctor when we have a cold？-No，you _______．（ ）
| A． | don't | B． | needn't | C． | can't |
分析 --当我感冒的时候我必须去看医生吗？
--不，你不必．
解答 答案：B．
needn't不必；can't不可能；don't，助动词do的否定式．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，表示不必．故选B．
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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