Question

(2006年徐州市)

--- Must I finish that work today?

--- No, you ________. You may finish it in three days.

[　　]

A．mustn't

B．needn't

C．shouldn't

D．couldn't

Answer 1

答案：B
解析：

解析：情态动词mustn't意为“不允许”；needn't意为“不必”，用来对must作否定回答。故选B。

提示：

启示：情态动词有can, may, must, need等，构成疑问句时，肯定回答分别是：Yes，主语＋can. /Yes，主语＋may. /Yes，主语＋must. /Yes，主语＋must.。否定回答分别是：No，主语＋can't. /No，主语＋mustn't. /No，主语＋needn't. /No，主语＋needn't.。