Bài giảng BAI TAP CHUYEN DOI CAU UNLESS

UNLESS (TRỪ KHI) = IF ..... NOT (NẾU KHÔNG)
CÔNG DỤNG CÔNG THỨC CỦA
UNLESS
CÔNG THỨC CỦA
MỆNH ĐỀ IF (PHỤ)
- unless = if ... not
- unless chỉ dùng để thay thế mệnh đề phụ
trong câu điều kiện, mệnh đề chính không đổi.
1. Unless S + V1/s(es) ↔ If S + don’t / doesn’t +
Vo
2. Unless S + am, is, are ↔ If S + am, is, are + not
3. Unless S + V2/ ed ↔ If S + didn’t + Vo
4. Unless S + were ↔ If S + weren’t
5. Unless S + had V3/ed ↔ If S + hadn’t V3/ed
6. Unless S + had been ↔ If S + hadn’t been
Examples :
1. Unless you stay at your bed, you will be punished.
 If you don’t stay at your bed, you will be punished.
2. Unless she drinks water, she will feel thirsty.
 If she doesn’t drink beer, she will feel thirsty.
3. Unless they were absent now, they would meet the head master.
 If they weren’t absent now, they would meet the head master.
4. Unless he cleaned up the car now, his boss could ask him to do this.
 If he didn’t clean up the car now, his boss could ask him to do this.
5. Unless you had stayed at home yesterday, you wouldn’t have enjoyed a delicious meal.
 If you hadn’t stayed at home yesterday, you wouldn’t have enjoyed a delicious meal.
6. Unless he had been busy last night, he could have met his friends.
 If he hadn’t been busy last night, he could have met his friends.
Rewrite the statements by using the conditional sentences:
1. You can’t run fast unless you try your best.
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2. Because Tom is out, you don’t see him at home.
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3. The boy wouldn’t go swimming unless the weather were nice.
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4. Everything was tidy, so I felt pleasant.
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5. We could have slept well unless the noise had been turned off.
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6. People hear you coming to my office. They phone me.
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7. Unless you lived in the dormitory, you could annoy me.
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8. Ngoc didn’t save my kids from hot water because Ngoc was busy meeting his customers.
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9. Unless the student goes to school early, he will be punished.
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10. Minh doesn’t get rid of his job because he loves working with computers.
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11. Unless last night your sister had gone home early, your mother could have waited for her.
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12. Because my mother wasn’t here, I didn’t ask for some money.
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13. The dogs can’t bite you unless you touch them.
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14. The books are expensive. I can’t buy them.
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15. I couldn’t think of myself unless I had some troubles.
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16. Harry Porter is an adventure film because it talks about the life and the discoveries of him.
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17. Her car wouldn’t have been broken yesterday unless she had driven fast.
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18. Hoa wrote to her parents. She wanted to greet them.
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19. Unless people knew you, they wouldn’t give you some precious information.
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20. Because these projects were out of date, the manager looked uncomfortable.
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21. Unless the young girl stops smoking, she won’t be healthy.
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22. I don’t like cats because cats are fury.
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23. Unless ten years ago they had lived in USA, they couldn’t have been the citizens in this country.
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24. Tom didn’t join the camping. I couldn’t persuade him to go with us.
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25. People can’t swim unless they study how to swim.
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26. Anne doesn’t attend the party because she wants to be alone.
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27. This department couldn’t be destroyed unless it built carefully.
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28. Susan agreed to go swimming because she liked water.
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29. Yesterday, I could have been injured unless I had seen a big container in the street.
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30. Sports make people healthy, so they do exercise every morning.
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31. Unless you were me, you couldn’t understand me.
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32. We are the world. We can co - operate one another.
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33. Unless this man is a driver, he can’t help you move by car.
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34. Dannis isn’t at home because he is on business.
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35. Unless they had been on the phone last night, they couldn’t have known the big secrets.
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36. Because man is the first person on Earth, he discovers the earth by hands and brain.
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37. You can’t join the club unless you are sick.
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38. Our picnic was passed easily because my mother helped me.
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39. Unless he refused everything, he would lose his family.
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40. Anne carried out a plan. Her family admired her so much.
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41. Unless I saved my money, someone would take it.
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42. Because she wasn’t tired, she could go on running.
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43. Linda can’t do her homework unless she is free.
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44. Richard played piano well, so everyone clapped their hands.
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