=>
3. If he pays me tonight, I will have enough money to buy a car.
4. If he didn't smoke, he could get rid of his cough.
5. If she weren't very shy, she would enjoy the party.
6. If I get a work permit, I will stay for another month.
7. If he took some exercises, he would be healthy.
8. If I had the right change, I could get the ticket.
9. If you don't study hard, you won't pass the exam.
10. If you are impatient, you will make mistakes.
11. If I had eaten lunch, I wouldn't feel hungry now.
12. Unless they invite me, I won't come.
13. If he had revised all his lessons, he wouldn't have failed the exam.
Câu đk loại 1 : If S Vs/es, S will/can (not) V
Câu đk loại 2 : If S V2/ed, S would/could (not) V
Câu đk loại 3 : If S had V3/ed, S would (not) have V3/ed
Câu đk hỗn hợp : If S had V3/ed, S would (not) V
Unless ~ if not