1. If it was cold, we'd have it a fire
*Cấu trúc : If + S + V-ed, S + would + Vinf...
2. If John had came, we'd have done some painting
*Cấu trúc : If + S + had+ Vpp, S+ would + have + Vpp...
3. Claire would have bought some clothes if she'd seen something she liked
4. If the Joke had not been very funny, the audience wouldn't have laughed
5. We would not have decided to leave if it hadn't been really noisy
