Where is he from和 Where does he come from 的区别是什么?

虽然两句话最终意思都一样,但部分单词充当语句成份不一样。就像:I'm from chinaI comes from china。Where is he from和 Where does he come from 第一句Where is he from?from跟在be 动词 is 之后作表语。而he 是 第三人称单数,故be 动词用 is。也就是说is 在这里是做系动词。而不可能用 are 。而 Where does he come from?中,come from 构成一个动词短语。而主语he 是第三人称单数,可又出现在疑问句中,does 充当 come from 的助动词,故用 does。