例：They might have found a better hotel if they had driven a few more kilometers.
如果他们多开几公里的话，他们也许会找到一个更好的旅馆。
We would be back in the hotel now if you didn’t lose the map.
如果你没有把地图丢了的话，我们现在就回到旅馆了。
Grace doesn’t want to move to New York because she thinks if she were to live there, she wouldn’t be able to see her parents very often.
格蕾丝不想搬到纽约，因为她认为如果住在那里，她就不能经常看到她的父母了。
注意：如果在表示虚拟语气的if条件句中含有were, had或should, 可将if省略，然后将were, had或should移至主语之前。
Were it not for the support of the teachers, the student could not overcome her difficulty.
如果没有老师的帮助，这个学生克服不了她的困难。
如果主句和从句是对不同时间的事实的虚拟，则被称为错综虚拟语气。此时主句常有明显的时间状语。
Maybe if I had studied science, and not literature then, I would be able to give you more help.
也许如果当时我学的是理科而不是文科，那么我现在就可以给你更多的帮助了。
