1. When we arrived, David had gone home
After David had gone home, we arrived
2. After having a look around the shops, we had snack
3. They had no sooner begun work than the light failed
No sooner had they begun work than the light failed
Hardly had they begun work when the light failed
4. We were happier than ever before
5. Before I went to the zoo last year, I had never seen a real tiger.
6. I'd rather you didn't go to the party yesterday
7. If the man hadn't been poor, he could have afforded accommodation
8. I wish my teacher hadn't given me a lot of homework
9. I'd rather he had obeyed with his parents
10. If his home hadn't been very far from there, she would have taken that job in the city.