赖世雄教你学英语语法
虚拟语气
5-3：时态不一致的虚拟
时态不一致的虚拟也就是if从句与过去事实相反，用过去完成时，主句与现在事实相反则用助动词过去时。句型如下：
if...had+p.p.,主语+would/could/might/should/ought to+原形v+now/today.
例：if i had been rich, i could buy a car now.
（如果我很有钱，我现在就能买辆车。）
if i had met her five years ago, she might be my wife today.
（如果五年前我遇见了她，今天她可能就是我的妻子。）
if i had been rich, i could have bought a car now.(x)