Do you know if she came? 这句话对么

不太对.
参考:Do you know whether she would came?
Do you have any idea if she would came?

不对,是Do you know if she come?

应该用Do you know if she will come
你知道她会来吗？

是对的,在这里的意思是"你知道她来了没(指过去)

不对
应该是 Do you know whether she will come?