I don't think you've answered my question.这句话的意思是：我认为你没有回答我的问题.能不能变成这样：I think you haven't answered my question.

I don't think you've answered my question.
这句话的意思是：我认为你没有回答我的问题.能不能变成这样：I think you haven't answered my question.

可以.但是没见过有人那么说.别扭.