If Peter had studied, he wouldn't have failed his exam.
If you hadn't left the window open, the carpet wouldn't have got wet.
If Pocahontas hadn't lived with the English, she wouldn't have met her husband.
If she hadn't died in England, she wouldn't have been burned there.
If you hadn't broken the mirror, you wouldn't have probably lost the game.
If the tourists had had a map, they wouldn't have lost their way.