Peter ( ) come with us tonight,but he isn't very sure.括号里为什么不能填can?

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Peter ( ) come with us tonight,but he isn't very sure.括号里为什么不能填can?
Peter ( ) come with us tonight,but he isn't very sure.括号里为什么不能填can?

Peter ( ) come with us tonight,but he isn't very sure.括号里为什么不能填can?
通过but he isn't very sure 可知,他有可能来,也有可能不来,不确定,所以MAY比较好,
CAN不可以,因为CAN只能用于疑问或否定的推测,这里是肯定