我要是呆在家里的话，假期会好过的多。  I would have had a much better holiday if I had stayed at home. 
自从我上次见到你以后你都在干什么？  What have you been doing since I saw you last time? 
如果我昨天钱够的话，我就买了那盒磁带了。  If I had got enough money yesterday, I would have bought that tape. 
回过头来看，我想我不应该如此轻易的放弃那次比赛。  Looking back on it, I think I shouldn't have given up the contest so easily. 
如果我打的去的话就不会迟到了。  Had I taken a taxi, I wouldn't have been late.
就算再考**次你也通不过。  Even if you take the exam again, you won't pass it. 
就算你给了他更多的钱， 他也还不清债务。 Even if you had given him much more money, he might not have paid off the debt. 
如果你昨天没有出去野餐的话。你会干什么？  What would you have done if you hadn't gone out for a picnic yesterday? 
我真希望我把真相告诉了他。  I wish I had told him the truth.
我希望你没有欺骗我。  I wish you hadn't cheated me. 
如果天气好的话，我们就去公园了。  If it had been fine, we would have gone to the park. 
如果你没有朝他挥手，他能看见你吗？  Would he have seen you if you hadn't waved to him?
你本应该更努力的学习。  You should have studied much harder. 
我本想和老师争论那个问题，但我没有足够的勇气。  I had thought about arguing with the teacher about that, but I didn't have enough courage. 
当我的父母去年出国的时候，我本想和我的祖父母住在**起。  I had thought about living with my grandparents when my parents went abroad last year.