同等学力考博辅导班

考博英语语法详解　

　考博英语语法：混合虚拟语气
　　有时主句和从句的谓语动词指不同的时间，这时需要用混合虚拟语气。一般来说，在这种情况下，主从句谓语动词指代的时间不同，所以我们又可以错综时间条件句，在这种虚拟情况，动词形式应根据实际情况灵活使用，在做这些题目时候尤其要注意每道题目的提示语：时间状语。绝大多数情况下，从句或者主句都有相关的时间状语，这是我解题的关键。
　　If you　that late movie last night, you wouldn’t be so sleepy.
　　A. haven’t watched
　　B. didn’t watch
　　C. hadn’t watched
　　D. wouldn’t have watched　答案选C。
　　Many dead would now be alive if they have not attempted to return for something.
　　Had Paul received six more votes in the last election, he would be our chairman now.
　　混合虚拟语气还有一种情况就是事实和虚拟假设的混合句，这样的句子不仅仅是时间的不同，而重要是事实和假设的混合。
　　I would have gone to visit him in the hospital had it been at all possible, but I was fully occupied the whole of last week.
　　该句前半部分是假设虚拟，而后半部分是事实的陈述。