改错. He mustn't be at home. I saw him here just now.
作者&投稿:木杜 (若有异议请与网页底部的电邮联系)
A 否定性推测一定要用can’t。
选c
首先句子的动词时be,不能用must
so he is是对上文的肯定,意思是”确实这样“(从头到尾都是他一个人)
so is he的意思是”他也是这样“,也就是如果前文说了别人的一种情况,然后用so is he, 意思是他和前文所说的那人情况一样。(这里有两个人了)
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.
老腾素安: 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.
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