11. He has twisted his ankle, so he can't play tennis this afternoon.
⇒ Had he not have twisted his ankle, he would have been able to play.
12. We didn't follow the directions, that's why we got lost.
⇒We would not have got lost if we had followed the directions.
13. You should read more to improve your vocabulary; that's what I'd do.
⇒ If I were you, I would read more to improve my vocabulary.
14. Jenny can get a puppy only if she promises to take care of it.
⇒ Jenny can get a puppy as long as she promises to take care of it.
15.I wouldn't mind being transferred to another city if they offered me a higher salary.
⇒ I wouldn't mind being transferred to another city on condition that they offered me a higher salary.
16. Fortunately, they were wearing seat belts, so nobody was seriously injured
⇒ If it had not been for seat belts, they could have been seriously injured.
17.You can borrow my camera providing that you handle with care.
⇒ You can borrow my camera as long as you handle with care
18.Provided she passed her exam, her parents will let her go to Italy for the holdays.
⇒ On condition that she passed her her exam, her parents will let her go to Italy for the holidays.
19.Should you ever go to Colombia, visit the Museum of Gold in Bogota.
⇒ If you happen to go to Columbia, visit the Museum of Gold in Bogota.
20. I think that you shouldn't drink so much coffee.
⇒ If I were you, I wouldn’t drink so much coffee.
(Câu điều kiện loại 2 nhaaa)