EXERCISES
1. I'll go to the concert with you tonight ___ my boss asks me to work overtime this evening.
2. I'll punish you ___ you break one of my favorite vases.
3. He shouldn't drive ___ he doesn't have a driver's license.
4. Just let it go ___ you don't want to be involved in any argument.
5. I'll go to the beach with you ___ it rains this weekend.
6. ___ she does well in the interview, she won't be accepted in the Ph.D. program.
7. ___ he moves to another country, it'll probably be to Australia.
8. Life on the planet will be impossible ___ we don't fight against air and water pollution.
9. ___ we learn from our mistakes, we may repeat them.
10. You won't be able to describe the picture ___ you look at it carefully.
11. Don't do it ___ you don't want to.
12. Don't do it ___ you don't want to.unless
13. ___ she works hard, she won't get a promotion. .unless
14. Sign the document only ___ you read it carefully.
15. unless ___ you ask me to sit somewhere else, I'll sit here.
16. He must study ___ he doesn't want to flunk the course.if
17. ___ you need me, just give me a call, and I'll be there in no time.
18. Don't do it ___ you're not sure of the consequences. If
19. ___ you don't mind, I'll sit here.if
20. ___ you want to develop a lung disease, you shouldn't smoke. Unless
21. Just let it go ___ you don't want to be involved in any argument.if
CONDITIONAL
I- Mấy lưu ý về câu điều kiện:
 Câu điều kiện gồm có hai phần: Một phần nêu lên điều kiện và một phần còn lại
nêu lên kết quả hay được gọi là mệnh đề chỉ điều kiện và mệnh đề chỉ kết quả.
Ví dụ: If it rains, I will stay at home.
You will pass the exam if you work hard.
 Hai mệnh đề trong câu điều kiện có thể đổi chỗ được cho nhau
Ví dụ: You will pass the exam if you work hard.
II- Các loại câu điều kiện:

- Unless cũng thường được dùng trong câu điều kiện - lúc đó Unless = If not.
Ví dụ: Unless we start at once, we will be late.
If we don't start at once we will be late.
Unless you study hard, you won't pass the exams.
If you don't study hard, you won't pass the exams.
EXERCISES
1. I'll go to the concert with you tonight ___ my boss asks me to work overtime this
evening.
2. I'll punish you ___ you break one of my favorite vases.
3. He shouldn't drive ___ he doesn't have a driver's license.
4. Just let it go ___ you don't want to be involved in any argument.
5. I'll go to the beach with you ___ it rains this weekend.
6. ___ she does well in the interview, she won't be accepted in the Ph.D. program.
7. ___ he moves to another country, it'll probably be to Australia.
8. Life on the planet will be impossible ___ we don't fight against air and water
pollution.
9. ___ we learn from our mistakes, we may repeat them.
10. You won't be able to describe the picture ___ you look at it carefully.
11. Don't do it ___ you don't want to.
12. Don't do it ___ you don't want to.unless
13. ___ she works hard, she won't get a promotion. .unless
14. Sign the document only ___ you read it carefully.
15. unless ___ you ask me to sit somewhere else, I'll sit here.
16. He must study ___ he doesn't want to flunk the course.if
17. ___ you need me, just give me a call, and I'll be there in no time.
18. Don't do it ___ you're not sure of the consequences. If
19. ___ you don't mind, I'll sit here.if
20. ___ you want to develop a lung disease, you shouldn't smoke. Unless
21. Just let it go ___ you don't want to be involved in any argument.if