1. Take exercise regularly and you will feel healthier.

-> If you take exercise regularly, you will feel healthier

2. Leave now, or you'll be late for class

. -> If you don't leave now, you'll be late for class

3. You go to bed now, or your cold will get worse.

-> If you go to bed now, your cold won't get worse

4. Save electricity, or you'll pay much per month.

-> If you don't save electricity, you will pay much per month

5. Unless he phones now, he'll get no information

. -> If he phones now, he will get information

6. Don't try to clean this cloth, or it may lose its color.

-> If you clean this cloth, it may lose its color

7. Water these plants properly, or they won't grow well

. -> If you don't water these plants properly, they won't grow well

8. Study hard, or you'll fail in the next exam.

-> If you don't study hard, you'll fail in the exam

9. Emma may miss the train. But she can get the next one.

-> If Emma misses the train, she can get the next one

10. The children mustn't go near Nick's dog. It'll bite them.

-> If the children go near Nick's dog, it'll  bite them

11. He should study medicine and surgery because he wants to be a doctor.

-> If he wants to be a doctor, he should  study medicine and surgery

12. He will not get good grades because he doesn't prepare his lesson carefully

→If he doesn't prepare his lesson carefully, he will not get good grades

13. My uncle can't buy that house because he is poor.

-> If my uncle weren't poor, he could buy that house

14. He can't speak English well because he has no chance to practice

-> If he had a chance to practice, he could speak English well

15. Kate won't come to the party because she is sick

-> If Kate weren't sick, she would come to the party

16. She doesn't have tickets, so she won't take us to the zoo.

-> If  she had tickets, she would take us to the zoo

17. My friend can't join the trip, so he won't write to me

-> If my friend could join the trip, he would write to me

18. It isn't fine now, so we won't have a picnic in the meadow

-> If it were fine now, we would have a picnic in the meadow

19. We don't have a bicycle, so we don't go there for a picnic

-> If we had a bicycle, we would go there for a picnic

20. She is not on board now, so she can't experience these marvelous

-> If she were on board now, she could experience these marvelous

21. We don't have enough money to go on holiday

-> If we had enough money, we would go on holiday

22. You are not tall enough to reach that shelf

-> If you were tall enough, you could reach that shelf

23. You should work hard on the pronunciation

-> If I were you, I would work hard on the pronunciation

24. You shouldn't tell him the truth.

-> If I were you, I wouldn't tell him the truth

25. I think you shouldn't play games too much.

-> If I were you, I wouldn't play games too much

26. I think you should spend less money on luxurious phones.

-> If I were you, I would  spend less money on luxurious phones.

1. Hung up or you will be for work

If you do not ......... Hung up,you will be for work.......

2. I might be late. If so, let's start with our me

If I am late ,I won't start with our me

4. I'll call the police. If you don't leave me alone

I'll call the police unless you don't leave me alone

5. In this now weather we don't go to school

If it is not ????

6. You drink too much coffice that's why you can't shop

If you do not drink too much coffice, you can shop

1. Mr John.....HAS BEEN.. (be) the principal of our school since last week

2. I....MET.. (meet) Arthur three weeks ago

3. He said that he..WOULD LOOK..for a job the following week

4. People...SPEAK.... (speak) English and French in Canada

5. They got up late, and when they arrived at the station, the train....HAD LEFT.. (leave)

6.they...VISITED....(visit) their old teachers every month last year

7. David....IS REPAIRING.... (repair) the tv set at the moment. He has been working for one hour

8.i can't make a decision. I keep..CHANGING... (change) my mind

9. If he (not star) DOESN'T STAR at once, he will be late for the train

10.you.....WILL STOP....(stop) by the policeman if you try to cross the road now

11. If your child.....PRACTISES.. (practise) speaking English everyday, he will soon improve it.

1. Mr John has been (be) the principal of our school since last week

2. I met (meet) Arthur three weeks ago

3. He said that he would go for a job the following week

4. People speak (speak) English and French in Canada

5. They got up late, and when they arrived at the station, the train had left (leave)

6.they visited (visit) their old teachers every month last year

7. David has repaired (repair) the tv set at the moment. He has been working for one hour

8.i can't make a decision. I keep changing (change) my mind

9. If he (not star) doesn't star at once, he will be late for the train

10.you will be stopped (stop) by the policeman if you try to cross the road now

11. If your child practises (practise) speaking English everyday, he will soon improve it.

1.   Recycle and we will save natural resources. 

→ If we recycle, we will save natural resources. 

2.Hurry up or you will be late for work

→ If you don't hurry up, you will be late for work

→ Unless you hurry up, you will be late for work

3.     Don’t leave the lights all night or you’ll waste electricity.

→ If you  leave the lights all night, you’ll waste electricity.

4.     You can improve your English by practicing speaking English every day.

→ If you practice speaking E everyday, you can improve your ENglish

5.     Phone me tonight or he won’t get any information. 

→ If he doesn't phone me tonight, he won’t get any information. 

→Unless he phones me tonight, he won’t get any information. 

6. “Where are you living now?” I said to him 

→ I asked him where he was living then

7.“What do you do to improve your English?” the examiner asked me. 

→ The examiner asked me what I did to improve my English

8. “Will you finish these reports for me tomorrow, Mary?” said Peter  

→ Peter asked Mary if she would finish thóe reports for him the day after

9.“I must stay at home tonight to do my homework” said John.

→ John said ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­he had to stay at home that night to do his homework

10. “You can use my telephone if you need it.” said Lan to me    

→ Lan told me I could use her telephone if I needed it

1.Unless you get up early, you'll be late for school

   You don  t get up early or you  will  be late for school

2. Unless you leave me alone, I will call the police

3. This pen is my brother

4. Whose book is there 

Mk ko chắc lắm câu trả lời Ok

# Lieutenant Dm # 

1. If you don't get up early, you'll be late for school.

-> Unless you get up early, you'll be late for school.

-> Get up early or you'll be late for school.

2. I will call the police if you don't leave me alone.

-> Unless you leave me alone, I'll call the police.

3. This pen belongs to my brother

-> This is my brother's pen.

4. Who does this book belongs to ?

-> Whose book is this ?

Ex 1 : Viết lại câu dưới dạng câu điều kiện 

1. You won’t lose weight if you eat so much,

  If you didn't eat so much, you would lose weight.

2. Hurry up or you will be late for the last train.

  If you don't hurry up, you will be late for the last train.

3. I will feel relaxed this weekend if I finish all my work by next Friday.

  I won’t feel relaxed this weekend if I don't finish all my work by next Friday.

4. If you don’t deal with your stress, your health will suffer.

Unless you deal with your stress, your health will suffer.

5. Stress hormones will stay in your body if you don’t do some exercise.

Unless you do some exercise, stress hormones will stay in your body.

6. You will feel very stressed if you don’t try to relax.

 You will feel very stressed unless you try to relax.

7. Keep silent or you’ll wake the baby up.

 If you don't keep silent, you’ll wake the baby up.

8. Don’t go out in the rain because you’ll get wet.

If you go out in the rain, you’ll get wet.

9. I won’t enjoy the film if you aren’t with me.

 Unless you are with me, I won’t enjoy the film

10. Stop talking or you won’t understand the lesson.

If you don't stop talking, you won’t understand the lesson.

11. You should take a map because you might get lost in those mountains.

 In case you get lost in those mountains, you should take a map.

12. If Joe doesn't change his ways, he will end up in prison.

 Unless Joe changes his ways, he will end up in prison.

13. If he doesn't work harder, he'll lose his job.

 Unless he works harder, he'll lose his job.

14. Joan will stay on at school unless she finds a good job before September.     

 If Joan doesn't find a good job before September, she will stay on at school.     

15. Unless someone has a key, we can't get into the house.

 We can not get into the house if someone doesn't have a key.

16. I’ll call the teacher if you don’t leave me alone.

 Unless you leave me alone, I’ll call the teacher.

17. When you ask me for the car, I will lend it to you.

 Unless you ask me for the car, I will not lend it to you.

18. Don’t go out in the rain because you will get wet.

 If you go out in the rain, you will get wet.

19. Walk faster or you will miss the bus.

 If you don't walk faster, you will miss the bus.

20. I won’t enjoy the film if you aren’t with me.

 Unless you are with me, I won’t enjoy the film.

21. You must leave home early or you will miss the flight

 If you don't leave home early, you will miss the flight.

22. John will pass the driving exam if he isn’t nervous

 Unless John is nervous, he will pass the driving exam.

23. They will go on holiday if they have time.

 Unless they have time, they won't go on holiday.

24. You have to get up early or you will be late for school.

 If you don't get up early, you will be late for school.

25. I'll only help you if you promise to try harder.

 Unless you promise to try harder, I won't only help you.

26. He will take a taxi if it rains.

 Unless it rains, he won't take a taxi.

27. Unless he phones immediately he won't get any information.

 If he doesn't phone immediately, he won't get any information.

Viết lại là

If you don't leave now, you will miss the train

Leave now or you will miss the train

=>If you don't leave now, you will miss the train

=>If you leave now, you won't miss the train

Viết lại:
Unless you leave now, you will miss the train

create sentences with the same meaning by using otherwiseor or else

1. if you don't leave now, you'll be late for class

-> Leave now otherwise you'll be late for class.

2, if you don't go to bed, your cold will get worse

-> Go to bed or else your cold will get worse.

3, only if you speak both Japanese and Chinese fluently will you be considered for that job

-> You have to speak both Japanese and Chinese influently, otherwise you won't be considered for that job.

4, unless you have a ticket, you can't get into the theater

-> Get a ticket otherwise you can't get into the theater.