1.If you don't keep quiet, you will wake the baby.

2.If you keep talking, you won't understand the lesson.

3.If you throw garbage in the river, the water will be polluted.

4. If I knew her number, I would have called her.

5.If I knew the answer, I would tell you.

6.If the water is too dirty, the fish will die.

7.If we don't have a map, we will get lost.

8. If Susan eats four cakes, she will get sick.

9.If the weather wasn't good, we wouldn't have had a picnic.

10.If we keep the water clean, we will have enough water to use in the future.

11.If Peter eats too many sweet potatoes, he might get fat.

12.If you water regularly the plant will grow well.

13. If you don't finish your homework, you won't be able to go out tonight.

14.If they go out, they will help me.

15.If he practices more, he will be able to win the game.

Rewrite the sentences without changing the meaning.

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

→ If he didn't have to study for his exam, he could go out

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

→  If she weren’t lazy, she could pass the exam.

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

→ If he pays me tonight, I would have enough money to buy a car.

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

→ If  he didn't smoke too much, he would  get rid of his cough

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

→ If she weren’t shy, she could enjoy the party.

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

→ If I get a work permit, I will stay for another month 

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

→ If he didn’t take any exercises, he is so unhealthy

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

→ If I had the right change,we could get the ket

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

→ If you study hard, you would pass the exam

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

→ If you are impatient, you will make mistakes.

1. The river which flows through Ho Chi Minh City is the Sai Gon River.

2. Mr Phong who is supposed to be at the meeting hasn’t come yet.

3. Our solar system is in a galaxy which is called the Milky Way.

4. I come from a city which is located in the southern part of the country.

5. I’ve recently gone back to the town where I was born.

6. Do you know the name of the hotel where John is staying?

7. There are some words which are very difficult to translate.

8. What is the name of the man whose car you borrowed?

9. This watch which I have lost costs a lot of money.

10. We were given a lot of information most of the which was useless.

1. If you aren’t quiet, you will not understand the lesson.

2. If you study harder, you won’t fail the final exam.

3. If you don’t work harder, you won’t get high salary.

4. If you don’t practice speaking English every day, you can’t improve your English.

5. You can’t control the child, can you?

6. They hardly understood the problem, did they?

7. The children are looking forward to going to the circus.

8. Do you have any difficulty speaking English?

9. The browns have not painted the living room for two years.

10. He began studying English six years ago.

11. Travel a lot and you will know more about my beautiful country

               If ……you travel a lot, you will know more about my beautiful country………

12. Be careful or you’ll break the vase

               If ……you are not careful, you'll break the vase………

13.Work hard or you will fail the exam

               If …you don't work hard, you will fail the exam…

14. I’ll let you borrow the book, but you must promise to return it next week

               If …you promise to return it next week, I will let you borrow the book……

15. The sea gets warmer, and the ice at the North and South Poles melts

               If ……the sea gets warmer, the ice at the North and South Poles will melt…

16.He can do a part to save the environment by buying recycled products.

               If ……he buys recycled products, he will do a part to save the environment…………

17.Putting garbage into the bins is one answer to minimize pollution

                     If ……you put garbage into the bins, you will minimize pollution…………

18..Working too much will make you tired.

               If ……you work too much, you will be tired…

19.Don’t be careless or you will fall over the rock

              If ………you are careless, you will fall over the rock………

20.Peter will pass his exam, but he has to study hard.

                     If ..…Peter studies hard, he will pass his exam…

Câu trúc câu đk loại 1: If S V (present simple), S will V

1.     Do your exercises or you will fail the exam.

=> If you don’t do your execises, you will fail the exam.

2.     Save some money or you won’t be able to buy the house.

=> If you don't save some money, you won’t be able to buy the house.

3.     Behave yourself or your parents will be very unhappy.

=> If you don't behave yourself, your parents will be very unhappy.

4.     Do it carefully or you’ll feel sorry afterwards.

=> If  you don't do it carefully, you’ll feel sorry afterwards.

5.     Ask him first or he won’t offer to help.

=> If you don't ask him first, he won’t offer to help.

6.     Be calm or you’ll make a wrong decision.

=> If you aren't came, you’ll make a wrong decision.

7. Be careful or you’ll cut yourself with that knife.

=> If you aren't careful, you’ll cut yourself with that knife.

8. Concentrate on your teacher’s lecture, or you won’t understand the lesson.

If you don't concentrate on your teacher’s lecture, you won’t understand the lesson.

9. They have to drive carefully; otherwise, they will have an accident.

If they don't drive carefully, they will have an accident.

10. Your sister must finish her homework, or she will be punished.

If your sister doesn't finish her homework,  she will be punished.

11. We should do exercises regularly so that we will be in good shape.

If we do exercises regularly, we will be in good shape.

12. Take part in outdoor activities, and you will widen your knowledge.

If you take part in outdoor activities,  you will widen your knowledge.

13. We should eat sensibly so that we won’t gain weight.

If we eat sensibly, we won’t gain weight.

14. You should study English well, and you will have many opportunities for good jobs.

If you study English well, you will have many opportunities for good jobs..

15. Your parents have to control their temper, or they will punish you severely.

If your parents don't control their temper, they will punish you severely.

1 . If you work hard you will pass the exam.
2 . If Henry fails his examination,his parents will be sad.
3. If sue go out this weekend,she wont have time to study. 
4. If it snow tomorrow I will go skiing.
5 . If he doesn’t leave soon he will mis the bus.
6 . If you phay with matches you will hurt yourself.

1. if you shouldnt work hard you wont pass the exam

2. if Henry failed his examination, his parent will be sad

3. Unless you come , I will go .

4.  if the weather'll snow tomorrow, i will go skiing

5. if he leave soon, he'll miss the bus

6. if you play the matches, you'll hurt yourself

1.   You should work hard, or you won’t pass the exam.

      If you work hard, you will pass the exam

2.   Henry fails his examination. His parents will be sad.

      If Henry fails his examination, his parents will be sad.

3.   If you don’t come , he will go

      Unless you come,  he will go

4.   I think it’ll snow tomorrow. I will go skiing.

      If it snows tomorrow. I will go skiing.

5.   He should leave soon, or he’ll miss the bus.

      If he doesn't leave soon, he’ll miss the bus.

6.   Don’t play with matches. You will hurt yourself.

     If you play with matches,you will hurt yourself.    

If you are not calm, you will make a wrong decision. 

If you do not go right now, you will miss the bus. 

If you are lazy, you will fail the exam. 

Unless you like this one, I will bring you another. 

Unless she does her homework, she cannot watch TV. 

1 Be calm or you will make a wrong decision
If__you are not calm ,you will make a wrong decision__
2 Go right now or you will miss the bus
If_you don't go right now,you will miss the bus___
3 Don't be lazy or you will fail the exam
If_you are lazy,you will fail the exam __
4 If you don't like this one, I'll bring you another
Unless_you like this one,I'll bring you another___
5 If she does her homework, she can watch TV
Unless_she doesn't do her homework, she can watch TV__

1. Rita might fail her driving test. But she can take it again.
=> If Rita fail her driving test, she can take it again.
2. Liverpool might lose. If they do, Terry will be upset.
=> If Liverpool loses, Terry will be upset.
3. The office may be closed. In that case, Mike won't be able to get in.
=> If the office closed, Mike won't be able to get in.
4. Cathy may arrive a bit early. If she does, she can help her mother to get things ready.
=> If Cathy arrive a bit early, she can help her mother to get things ready.
5. The party might go on all night. If it does, no one will want to do any work tomorrow.
=> If the party go on all night, no one will want to do any work tomorrow.
6. Alice may miss the train. But she can get the next one.
=> If Alice miss the train, she can get the next one.
7. Is Jack going to enter the race? He'll probably win it.
_____________________________________________
8. Stop talking or you won’t understand the lesson
_____________________________________________
9. Fail to pay and they will cut off the electricity.
_____________________________________________
10. Don’t touch that wire or you may get an electric shock.
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