1 I would have gone to university a year earlier if I'd passed my exams.
2 You would have passed your exams if you'd worked a bit harder.
3 "What would you have studied if you hadn't studied history?" "I don't know. I would have studied politics."
4 If I had known the course was going to be so dull, I would have gone somewhere else.
5 If you had not recommended that university to me, I would have tried to get a place at Cambridge university.
6 If you had gone somewhere else, you would not have met your wife!