can't 是用于否定的推測.而must是用于肯定的推測的,mustn't用于關(guān)于禁止,不允許內(nèi)容的句子.
1.That must be him.He said he would come yesterday.
2.That can't be her.She has gone to London.
There's no light on.they____be at home.
There's no light on.they____be at home.
A:can't B:mustn't C:needn't D:shouldn't
為什么用can't,而不用mustn't.mustn't不是表推測嗎?
A:can't B:mustn't C:needn't D:shouldn't
為什么用can't,而不用mustn't.mustn't不是表推測嗎?
英語人氣：377 ℃時間：2019-11-17 02:15:45
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