虚拟语气1
首先，来看个小故事：期末考试到了，小明要小红给他抄答案，小红拒绝了，小明很不开心，对小红说：
If I had written that answer, I would have past that exam.
如果我写了那个答案，我就通过这次考试了。
If I had written that answer, I would be the top student.
如果我写了那个答案，我现在就是尖子生了。
If I had written that answer, I would receive a camera by my father.
如果我写了那个答案，我会收到爸爸的相机。
If I had written that answer, I would be going to the winter holiday. (貌似没什么逻辑关系>_<)
如果我写了那个答案，我明天就去夏令营。
回到定义：虚拟语气是相对陈述语气和祈使语气而言的，陈述语气包括陈述句、疑问句、感叹句，祈使句就命令句。虚拟语气则是表示愿望、建议、与事实或预期相反的假设。
对于需要应试的各位筒子们，只要知道虚拟语气用于状语从句和名词性从句，并了解它的常见搭配即可，来看这一幅图
：
时间 | 从句 | 主句 |
过去 | had done | would+ have done |
现在 | did/ were | would+ do/ be doing |
将来 | were were to do should do | would +do/ be doing |
