If it hadn't rained, I would have gone to the park.
I would have called round if I had known you were home.
He would have gotten the job if he had applied for it.
We would have done something about it if we had known what was going to happen.
If he hadn't seen that film, he wouldn't have bought a gun.
She would have been killed if you hadn't been there.
She wouldn't have left if she hadn't been so unhappy.