分类：教育/科学-外语学习-英语考试
问题：虚拟语气IdowishIknewmoreaboutthesuje 
I do wish I knew more about the suject. 
I did wish I have know more about the suject. 
这两句有什么区别？为什么不是had know?
回答：1.I do wish I knew more about the suject.
表示对现在事实相反的假设。
2. 这一定是打错了，绝对是：I did wish I had known more about the suject. 表示与过去事实相反的假设。