Who is it?Who is that?的区别.
问题描述：
Who is it?Who is that?的区别.
答
who is it一般用在跟对方直接说话的场合，但是往往是看不到对方的时候，比如对敲门的人。
who is that用在问某个人另外一个人是谁。
答
who is it? 一般是在敲门时屋里人问屋外人的,意为“是谁啊,谁?”
who is that? 一般是向别人询问“那个人是谁”