发布时间：2016-10-11 来源：环球网校 发布人：wyznl
If I V-ed, I would ……
结构︰If… 过去式动词…，主词 过去式助动词（would/should 等） 原形动词
说明︰这是与现在事实相反的假设句型。if <子句>中的<动词>，不论<主词>为第几人称，一律用 were，were 可置于主词前面，而省略 if.过去式<助动词>除用 should（用于第一人称）、 would（用于第二、三人称）外，还可用不分人称的 could，might 和 ought to，它们与<动词>原形结合起来构成<假设语气>.
If I knew his address, I could write to him.
If I were free now, I might call on him.
If you were in my shoes （=Were you in my shoes）, what would you do?
Were I rich enough, I would buy a sports car.
How happy I would be if I were a few inches taller!
If I had a car, I could take her for a drive.
If I had binoculars, I could see that comet clearly.