老版楚留香:改错. He mustn't be at home. I saw him here just now.

来源：百度文库 编辑：高校问答 时间：2024/05/12 18:17:29

mustn't改为can't这属于情态动词用法,表示肯定不用的是can't.mustn't是禁止的意思.

mustn't 是禁止的意思
如果要想表达 他一定不在家 可以用

He could not be at home.

mustn't 是不准,不允许的意思,根据语境应该是不可能,改为he can't be at home. can't是不可能的意思,是must做肯定推测的否定.

改错. He mustn't be at home. I saw him here just now. 关于mustn't That _be jessie.she was away in tokyo A.can'T B.mustn'T He often doesn't his homework. (改错) We mustn't sleep ____ class. I mustn't be+人名对不对 May I come in? No, you ___. A. mustn't B. needn't C. may not D. aren't The key __ be Peter's.His is still in the lock.A, can't B.mustn't can't be和mustn'be的区别 can't be和mustn'be的区别