用be from/come from/live/各造一个疑问句和否定句.

用be.from 和 come.from 造句 会的 I come from China .(用 be from改写句子） 怎么用Be from ,come from ,live造句 We come from China .( 用be from 改写句子） come from和be from的区别 Be from 和 come from 的句子 be from是不是等于come from be from如何换成come from? be from 与 come from 的区别 A_____________________________________________________?l come from China be/come from的中文 come from和comes from的区别和用法,come from ,be from,comes from有什么区别,分别怎么用,come from在什么时候要还原成come from?这几个很混淆 come back from和back from存在吗用了come 是不是就不用be .be from be over .come back l come from china是什么意思还有im' from china l come from china=什么? l come from china.翻译成中文 where do you come from?可不可以用be from来回答也就是说where do you come from?是否可以用I am from-------.