晚上好！您以前来过中国吗？

Kelsi: Good evening! Have you ever been to China before?

youdao

他们以前来过中国吗？

Have they been to China before?

youdao

你以前来过中国吗？

Have you been to China before?

youdao

A你以前来过中国，不是吗？

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

youdao

A你以前来过中国，不是吗？

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

youdao