How do you like Beijing,Mr Black?

问题描述:

How do you like Beijing,Mr Black?
Oh,I____visit such a beautiful city before.
用现在完成时还是过去完成时?》
现在已经参观过了啊,为什么答案是haven't

这句意思你看懂了么?
我之前还没去过比这(北京)更美得城市.
说的haven't是指之前的状态 当然用这个haven't