- I didn't see you when you passed me in the street. If I'd seen you, of course I would have said hello. (but I didn't see you)
- I decided to stay at home last night. I would have gone out if I hadn't been so tired. (but I was tired)
- If he had been looking where he was going, he wouldn't have walked into the wall. (but he wasn't looking)
- The view was wonderful. If I'd had a camera, I would have taken some photographs. (but I didn't have a camera)
- I'm not hungry. If I was hungry, I would eat something.
- I wasn't hungry. If I had been hungry, I would have eaten something.
- If I had seen you, I would have said hello.
- If I'd seen you (I'd seen = I had seen)
- I'd have said hello (I'd have said = I would have said)
- I had gone to the party last night, I would be tired now.
