1. We must leave now , or we will miss the plane

=> If we don't leave now , we will miss the plane

2. Be careful or you many fall

=> If you are careless , you may fall

3. Hurry up or we'll be late for the concert

=> If we don't hurry up , we will be late for the concert

4. Oủ sources of energy will soon end if we don't try to save them

=> Unless we try to save our sources of energy , it will soon end

5. You will catch a cold if you don's keep your feet dry

=> Unless you keep your feet dry , you will catch a cold

6. Unless we protect the envirmonent , we will destroy ourselves

=> If we don't protect the eviroment , we will destroy ourselves

7. Unless she is more hard - working , she will get low marks

=> If she isn't more hard-working , she'll get low marks

8. Unless he listens to his parents , he will fail

=> If he doesn't listen to his parents , he will fail

1. We must leave now , or we will miss the plane

=> If we don't leave now, we will mis the plane.

2. Be careful or you many fall

=> If you aren't careful, you'll fall.

3. Hurry up or we'll be late for the concert

=> If you don't hurry up, you'll be late for the concert.

4. Our sources of energy will soon end if we don't try to save them

=> Unless we try to save our sources of energy, they will soon end.

5. You will catch a cold if you don's keep your feet dry

=> Unless you keep your feet dry, you will catch a cold.

6. Unless we protect the envirmonent , we will destroy ourselves

=> If we don't protect the envirmonent, we will destroy ourselves

7. Unless she is more hard - working , she will get low marks

=> If she isn't more hard working, she will get low marks.

8. Unless he listens to his parents , he will fail

=> If he doesn't listen to his parents, he will fail.

B

b

1. Work hard and you will get good marks.

=> If ……you work hard, you will get good marks.….……………

2. Be careful or you will have an accident.

=> If …you aren't careful, you will have an accident.………

3. Hurry up or we will miss the last bus.

=> If ……we don't hurry up, we will miss the last bus.…..……….

4. If the weather isn’t beautiful, we will stay at home.

=> Unless …the weather is beautiful, we will stay at home.……

5. If we don’t start now, we won’t get on time.

=> Unless …we start now, we won’t get on time.…..………

6. If Lan doesn’t get up early, she will miss the train.

=> Unless ……Lan gets up early, she will miss the train.………..

7. If Ba doesn’t study harder, he will fail his next exam.

 => Unless ……Ba studied harder, he will fail his next exam.…

8. If you don’t promise to return back, I won't lend you.

=> Unless ....you promise to return back, I won't lend you.......

1/The woman will helps us and we will make it easily

->If the woman doesn't help us , we won't make it easily

2/ Don't be careless or you will fall over the rocks

->If you are careless , you will fall over the rocks

3/ Burn the trash and the air will be polluted

-> If you don't burn the trash , the air won't be polluted

4/ Hurry up or we'll be late for the meetings

->If we don't hurry up , we will be late for the meetings

5/ Be careful or you will fall over the rock

->If you aren't careful , you will fall over the rock

6/ Mary will buy a bike. She will ride to school

->If Mary doesn't buy a bike , she won't ride to school

1. If the woman helps us, we will make it easily

2. If you are careless, you will fail over the rocks

3. If you burn the trash, the air will be polluted

4. If we don't hurry up, we will be late for the meetings

5. If you are careful, you will not fail over the rock

6. If Mary buys a bike, she will ride to school

1. --> If the woman helps us, we will make it easily

2. --> If you are careless, you will fail over the rocks

3. --> If you burn the trash, the air will be polluted

4. --> If we don't hurry up, we will be late for the meetings

5. --> If you are careful, you will not fail over the rock

6. --> If Mary buys a bike, she will ride to school

1. I would be surprised if Ann came to see us now.

2. If we had enough money,we would go on holiday

3. Unless you do these exercises more carefully, you will fail the exam.

4. If I knew the answer, I could tell you.

5. If she knew French, she could apply for the job

6. Unless she cam here now, we'd come back home

7. Unless you are careful, you will be able to get the job

8. If it rains soon, the tree won't die

* Rewrite the sentences.

1. It is late now; I don't think Ann will come to see us.

-> I would be surprised if __________Ann came to see us________.

2. We don't go on holiday because we don't have enough money.

-> If _________we had enough money, we would go on holiday_________.

3. Do these exercises more carefully or you will fail the exams.

->Unless_________you do these exercises more carefully, you will fail the exams_________.

4. I do not know the answer so I cannot tell you.

-> If _________I knew the answer, I could tell you_________.

5. She can't apply for the job because she doesn't know Frencj.

-> If she knew__________Frencj, she could apply for the job________.

6. If she didn't come here now, we'd come back home.

-> Unless__________she came here now, we'd come back home________.

7. Be careful or you will not be able to get the job.

-> Unless__________you are careful, you won't be able to get the job________.

8. The trees will die unless it rains soon.

-> If_________it doesn't rain soon, the trees will die_________.

1, If we don't hurry up, we will be late for the bus

2, If you don;t study harder, you won't pass the exam 

3, If  we talk in class, we won't understand what the teacher is explaning

4, If you aren't carefull, you will break the flower vase

5, I will call the police if you don't give my cycle back

6, Unless you don't give my bicycle back, i will call the police

7, If you don't study harder, , you will fail the next exam 

8, If we aren't hurry up, we will late for the concert

9, If it doesn't stop ranning, we won't go out

10, UNless Joe change his way, he will end up in príon

1. Hurry up, or we will be late for the bus.

" If we ………………don't hurry up, we will be late for the bus……………………………………………………………………………

2. Study harder, or you won’t pass the final exam.

" If you ………………don't study harder, you won't pass the final exam……………………………………………………………………………

3. Don’t talk in class, or you won’t understand what the teacher is explaining.

" If we ………………talk in class, we won’t understand what the teacher is explaining. ……………………………………………………………………………

4. Be careful, or you will break the flower vase.

" If ….…………………………you are not careful, you will break the flower vase…………………………………………………………………

5. Give me the bicycle back, or I will call the police

" I will.…………………call the police if you do not give me the bicycle back…………………………………………………………………………

6. I’ll call the police if you don’t give back my bicycle. (Unless = If …. not)

→ Unless ……………you give back my bicycle, I will call the police……………………………………………………………………………

7. Study harder or you will fail in the next exams.

→ If ……………………you do not study harder, you will fail in the next exams…………………………………………………………………………

8. Hurry up or we’ll be late for the concert.

→ If ……………………you do not hurry up , we will be late for the concert…………………………………………………………………………

9. We won’t go out unless it stops raining.

→ If ………………………it does not stop raining, we will not go out………………………………………………………………………

10. If Joe doesn’t change his way, he will end up in prison.

→ Unless ………………Joe changes his way, he will end up in prison…………………………………………………………………………

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