关于情态动词的英语题

问题描述:

关于情态动词的英语题
1.I tried to ask him not to smoke ,but he ___ listen to me.
A.couldn't B.wouldn't C.may not D.mustn't
2.He___ be in his office now ,becaues he phoned me from his home just now.
A.mustn't B.can't C.needn't D.shouldn't

第一题B,情态动词will /would可以用来表示意愿 ”他不愿听我的“
第二题B can't 可以用来表示猜测 "一定不是,准不是",“他现在不可能在办公室,他刚才还从家里打电话给我”.mustn't表示禁止,不允许,needn't不必要,shouldn't 不应该