A你以前来过中国，不是吗？

A you've been to China before, haven't you?

youdao

你以前来过中国吗？

Have you been to China before?

youdao

你有来过中国吗？

ZT:Have u been to china?

youdao

你来过中国，是吗？

You have gone to china , haven't you ?

youdao

你来过中国，是吗？

You have gone to china , haven't you ?

youdao