（１）If it rains, we will be at home.
（２）If it snowed here, we could ski.
（３）If I had studied harder, I could have passed the exam.
（４）He said that if he were me, he would do that.
（５）I wish I were a bird.
（６）I wish she could have come with me.
（７）If only I had apologized to her at that time.
（８）She talks as if she knew everything.
（９）He looks as if he had been suffering from a terrible disease.
（10）If it were not for your help, I could not solve the problem.
（11）If it had not been for your help, I would have failed the exam.
（12）It is high time you went to bed.