he doesn't come from the USA和he isn't from the USA的区别是什么?为什么不能he doesn't from ...
问题描述:
he doesn't come from the USA和he isn't from the USA的区别是什么?
为什么不能he doesn't from ...
答
he doesn't come from the USA.
he isn't from the USA.
这两句是同义句.be from 相当于 come from.来自
对动词表示否定,才会借助于助动词.be from 含有be动词,直接加not表示否定.