43. It’s raining, so we can’t have lunch in the garden.

=> If

44. Why don’t you reuse these paper bags?

=> If I

45. You’d better not touch that switch.

=> If I

46.. Because I don’t know Japanese, I can’t apply for the job.

=> If I

47. If she doesn’t work harder, she’lllose her job.

=> Unless

48. We will be late if we don’t take a taxi.

=> Unless

49. Work hard or you will fail the exam.

=> If you

50. We can’t have a foreign holiday because we don’t have enough money.

=> If we

51. You will pass this entrance examination with enough hard work.

=> If you don’t work

1. he didn’t miss the plane because he hurriedWomen can delay having children due to effective birth control methods.

A. If there are not effective birth control methods

B. , women can not delay having children

C. Unless women could delay having children there were not effective birth control methods

D. If there were not effective birth control methods, women could not delay having children

E. If there had not had effective birth control methods, women could not have delayed having children

2. He can not find a good job because he doesn’t know how to use a computer

A. If he knows how to use a computer, he can find a good job

B. If he knew how to use a computer, he could find a good job

C. If he had known how to use a computer, he could have found a good job

D. If he had known how to use a computer, he could find a good job

3. The coffee was too hot for us to drink

A. Although the coffee was so hot we could drink it

B. If the coffee were not too hot, we could drink it

C. If the coffee had not been too hot, we could have drunk it

D. Because the coffee was too hot, we drank it

4. He had spent his money carelessly and became broke

A. If he doesn’t spend his money carelessly, he will not become broke

B. If he didn’t spend his money carelessly, he would not become broke

C. If he hadn’t spent his money carelessly, he would not have become broke

If he didn’t spend his money carelessly, he would not have become broke

1."why didn't you tell me the truth, Mary ?" He said

➜He accused.......................

2."Don't play with the matches !" I said to jack.

➜I warned........................

3." I must have made a mistake in the calculations"

➜Mrs. Forest admitted.....................

4." I wish I were a movie star"

➜ He dreamed.......................

5."You can't run out of the garden," Ms Kelly said to children

➜Ms Kelly prevented....................

6.Peter doesn't get good marks because he doesn't study hard.

➜If...........................

7.I am not you, so I can't help him.

➜If...........................

8.he spends hours watching television; that's why he never has time to do his.

➜If...........................

9.She works very hard, so she earns a lot of money

➜If...........................

10.I never get very lonely because I have lots of good friends

➜If...........................

11.You drink too much coffee, that's why you can't sleep

➜If...........................

12.He cannot find a good job because he doesn't know how to use a computer

➜If...........................

13.John is fat because he eats so many chips

➜If...........................

14.I don't buy it. I don't have enough money

➜If...........................

15.He's very thin; that's why he feels the cold so much

➜If...........................

Rewrite the sentences without changing the meaning.

1. He can’t go out because he has to study for his exam.

→ If ..................................................................................................................................

2. She is lazy so she can’t pass the exam.

→ If ..................................................................................................................................

3. He will pay me tonight; I will have enough money to buy a car.

→ If ..................................................................................................................................

4. He smokes too much; that’s why he can’t get rid of his cough.

→ If ..................................................................................................................................

5. She is very shy, so she doesn’t enjoy the party.

→ If ..................................................................................................................................

6. I get a work permit. I will stay for another month.

→ If ..................................................................................................................................

7. He doesn’t take any exercises. He is so unhealthy.

→ If ..................................................................................................................................

8. We can’t get the ticket because I don’t have the right change.

→ If ..................................................................................................................................

9. Study hard or you won’t pass the exam.

→ If ..................................................................................................................................

10. Don’t be impatient or you will make mistakes.

→ If ..................................................................................................................................

51.She doesn’t go to China with us.
→We wish ………………………………………………………………………………………………
52.He can’t buy this bike because he doesn’t have enough money.

3

→If ………………………………………………………………………………………………………
53.Study hard or you will fail the final exam.
→If ………………………………………………………………………………………………………
54.I’m sorry, I cant speak English fluently.
→I wish …………………………………………………………………………………………………
55.It’s a pity that you aren’t here now.
→I wish ………………………………………………………………………………………………….
56.This problem seems diffficult for her.
→She wishes ……………………………………………………………………………………………
57.Water these flowers or they will die.
→Unless …………………………………………………………………………………………………
58.You practise your English regularly, and your English will improve.
→If ………………………………………………………………………………………………………
59.The students don’t study hard.
→I wish …………………………………………………………………………………………………
60.He spent 2 hours writing the letter.
→It took …………………………………………………………………………………………………

EXERCISE 1: Rewrite the following sentences using “Unless”

1. I won’t go to school if I don’t feel better.

2. Tony will walk to you is you question him.

3. If you don’t put on your overcoat, you’ll be cold.

4. You will fail the exam if you don’t work hard.

5. You’ll get a cold if you don’t keep your feet dry.

6. If I don’t leave now, I’ll miss my flight.

7. If you aren’t going to the party, I won’t go.

8. I can’t send you a postcard if  you don’t give me your address.

9. If I won a big prize in a lottery, I’d build a school for the poor.

10. I’ll call the police if you don’t leave me alone.

EXERCISE 2: Rewrite the following sentences using conditional sentences type 2.

1. They are poor, so they can’t help us.

2. He doesn’t do this homework. He is always punished.

3. He doesn’t have enough time. He can’t help me.

4. She doesn’t take any exercise, so she is overweight.

5. He doesn’t have a bicycle, so he always goes to class late.

6. I am bad at English, so I can’t do homework.

7. He doesn’t practise speaking French, so he doesn’t speak it fluently.

8. The meeting can be cancelled because it snows heavily.

9. We don’t go because it will rain.

10. John is fat because he eats so many chips.

EXERCISE 3: Rewrite the following sentences using conditional sentences type 3

1. He didn’t hurry, so he missed the train.

2. We didn’t go because it rained.

3. We got lost because we didn’t have a map.

4. He lost his job because he was late everyday.

5. The dress was so expensive. She could not buy it.

6. Sue felt sick because she ate four cream cakes.

7. My brother left the car keys, so I had to pick him up at the station,

8. We didn’t go on holiday because we didn’t have enough money.

9. He didn’t have the ticket to the game last week. He wasn’t be able to get in.

10. Robert got a bad cough because he started smoking cigarettes.

  51.She doesn’t go to China with us.

→We wish ………………………………………………………………………………………………

  52.He can’t buy this bike because he doesn’t have enough money.

→If ………………………………………………………………………………………………………

  53.Study hard or you will fail the final exam.

→If ………………………………………………………………………………………………………

  54.I’m sorry, I cant speak English fluently.

→I wish …………………………………………………………………………………………………

  55.It’s a pity that you aren’t here now.

→I wish ………………………………………………………………………………………………….

  56.This problem seems diffficult for her.

→She wishes ……………………………………………………………………………………………

  57.Water these flowers or they will die.

→Unless …………………………………………………………………………………………………

  58.You practise your English regularly, and your English will improve.

→If ………………………………………………………………………………………………………

  59.The students don’t study hard.

→I wish …………………………………………………………………………………………………

  60.He spent 2 hours writing the letter.

→It took …………………………………………………………………………………………………

  61.”Will you visit the Taj Mahal ?”He asked me.

→He asked me …………………………………………………………………………………………..

  62.Peter usually played soccer but now he doesn’t play anymore.

→Peter used ……………………………………………………………………………………………                                                                                                        

  63.I don’t have free time, so I can’t help you.

→If ………………………………………………………………………………………………………  

  64.They built that house 100 years ago.

→That house ……………………………………………………………………………………………

  65.I lent your book. It was written by a friend of mine. She lives in France.

→That book I ……………………………………………………………………………………………

  66.He intended to make a long journey with her 
→ He had………………………………………………………………………………………………  

67. He is going to visit her friends in HCM city 
→He is going to ……………………………………………………………………………………
  68. He decided to buy his house 2 years ago -
→He made …………………………………………………………………………………………

  69. He has no intention of leaving the city 
→He doesn't ………………………………………………………………………………………  

70. In stratford-on-Avon, we saw Shakespare's birthplace 
→We saw the house ……………………………………………………………………………….
  71. I'm sure you didn't lock the front door. Here is the key 
→You can't ……………………………………………………………………………………………..
  72. You don't need to talk so loudly
→There is ………………………………………………………………………………………………
  73.The train couldn't run because of the snow.

 →The snow ……………………………………………………………………………………………..
  74.He learned to drive when he was 10 years old.
→He has ………………………………………………………………………………………………...
  75. He failed to win the race.
→He didn't ………………………………………………………………………………………………
  76. A train leaves at eight o'clock every morning.
→There is ………………………………………………………………………………………………..
  77. My suit needs to be cleaned before the meeting.
→I must ………………………………………………………………………………………………...
  78. "You stole my best cassette, Amanda".
→William accused ……………………………………………………………………………………...
  79. The train journey from London to Bristol takes two hours.
→ It is a ………………………………………………………………………………………………….
  80. It was careless of you to leave the window open lastnight.
→You shouldn't ………………………………………………………………………………………..
  81. Alice finds it easy to make friends.
→Alice has no ………………………………………………………………………………………….
  82. The man injured in the accident was taken to the hospital.
→The man who ………………………………………………………………………………………..
  83. Nam and his family went on a trip to their home village for two days. 
→Nam and ……………………………………………………………………………………………...

  84. They haven't phoned us for a month.
→It has been ……………………………………………………………………………………………
85. Excuse me, aren't you employed by that company?
→ Excuse me, don't you…………………………………………………………………………………
  86. I've never been to a less exciting concert.
→It was …………………………………………………………………………………………………
  87. That old key board is not worth repairing.
→It is pointles …………………………………………………………………………………………..
  88. I can't hardly understand a word of this.
→ (difficulty) …………………………………………………………………………………………...

  89. "Why don't you postpone your trip till the fall, Jim?"
→Mary postpone …………………………………………………………………………………... off.
  90. Was it your idea that I should pay?
→Did you mean ………………………………………………………………………………………...
  91. I was never shown you how to operate that machine.
→At no time …………………………………………………………………………………………….
  92. We have no definite plans to go away.
→ We are not ……………………………………………………………………………………………
  93. A locksmith makes and repairs locks.
→A locksmith is ………………………………………………………………………………………...
  94. They have no money to buy this house.
→They don't ……………………………………………………………………………………………
  95. Orginally, tennis was an indoor game.
→Tennis used …………………………………………………………………………………………

  96.I used to own a dog. People came to the door. The dog never barked at them.

→The dog ………………………………………………………………………………………………

  97.I bought my car from a woman. She lives in a house. You can see the house over there.

→The woman I …………………………………………………………………………………………

  98.My friend Bill has decidedto buy a motorbike. His car was stolen last week.

→My friend Bill, ………………………………………………………………………………………..

  99.I bought a new car. It cost me a lot of money.

→The new ………………………………………………………………………………………………

  100.Please don’t leave your motorbike outside the back door.

→I’d rather ……………………………………………………………………………………………..

Bài 1:  Viết lại các câu sau dùng câu ĐK 2

1.     We can’t go swimming because it rains.

->if………….

2.     He is poor. He doesn’t afford to buy new clothes.

->If………………….

3.     I don’t know her address, so I can’t tell you.

->If I ………...

      4 . He can’t park near his office, so he doesn’t come by car

→ If ……………………..

     5. My house is guarded by two big dogs. it isn’t broken into every night

→ If ………………. ..

     6. The flats are not clearly numbered, so it is very difficult to find anyone.

→ If . ………………

7. I don’t have a cell phone , so I can’t lend you

→ If . ……………………

8. She works in the evening. She has no time to play with her children.

→ If …………….. .