请问英语电话用语中的who's this 与 who's that 有什么区别?

请问英语电话用语中的who's this 与 who's that 有什么区别? 各位大仙儿,在英语的电话用语中“who's this”,与“who's that”相等吗? who's the man 和who's that man有什么区别,可以随便用吗? who is that和who's this 打电话用语到底问别人你是谁,用who is this 还是who is that 他们有什么区别吗 who is this和who is that有什么区别? 英语的电话用语能用who's it这个问句吗? who`s 和whose 有什么区别 who`s 和 whose 有什么区别 在听电话中,who's that 中的's是不是is的缩写 This is John speaking.Who's that? 你是谁英语怎么讲.对女孩说的who is this who is that 有什么区别?