作业帮He ( ) be the person who killed Mary because he was with me last...下列选项哪个正确,为什么?He ( ) be the person who killed Mary because he was with me last night the whole night and ( ) it.A can't...could not do B may not ... could
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He ( ) be the person who killed Mary because he was with me last...下列选项哪个正确,为什么?He ( ) be the person who killed Mary because he was with me last night the whole night and ( ) it.A can't...could not do B may not ... could
He ( ) be the person who killed Mary because he was with me last...下列选项哪个正确,为什么?
He ( ) be the person who killed Mary because he was with me last night the whole night and ( ) it.
A can't...could not do B may not ... could not do C must not...could not have done D can't...could not have done
为什么不选C?
He ( ) be the person who killed Mary because he was with me last...下列选项哪个正确,为什么?He ( ) be the person who killed Mary because he was with me last night the whole night and ( ) it.A can't...could not do B may not ... could
D 否定句的推测用 can't .在否定推测中用"Can't"表示"一定不"
在表推测时"must只能用在肯定句中,不能用于否定和疑问句中.
must not 是禁止的意思
你好，
must是表示推断的，有猜测的含义在里面。但是这个句子意思是，他不可能是杀玛丽的人，因为他昨晚整晚和我在一起，不可能去杀人。已经不是推断了，而是证据确凿，陈述事实。所以应该选can't，can't的否定意味更强烈。
希望可以帮助到你~...
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你好，
must是表示推断的，有猜测的含义在里面。但是这个句子意思是，他不可能是杀玛丽的人，因为他昨晚整晚和我在一起，不可能去杀人。已经不是推断了，而是证据确凿，陈述事实。所以应该选can't，can't的否定意味更强烈。
希望可以帮助到你~
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