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III. Rewrite the second sentence in such a way that it has the same meaning as the one before it:
1. You can’t visit the United States unless you get a visa
If you get a visa, you can visit the United States.
2. We didn’t go on holiday because we didn’t have enough money
If we had had enough money, we would have gone on holiday.
3. What a pity you failed your driving test!
I wish you hadn't failed your driving test.
4. I’m sorry I missed your birthday party.
I wish I hadn't missed your birthday party.
5. Unless someone has a key, we can’t get into the house.
We can get into the house if someone has a key.
6. He’s sorry now that he didn’t invite Molly to his party
He wishes he had invited Molly to his party.
7. Unless he phones immediately, he won’t get any information
If he doesn't phone immediately, he won't get any information.
8. Mr. Will lost his job because he was late every day
If Mr. Will hadn't been late every day, he wouldn't have lost his job.
9. My husband didn’t leave the car keys, so I couldn’t pick him up at the station
If my husband had left the car keys, I could have pick him up at the station.
10. He didn’t hurry, so he missed the train
If he had hurried, he wouldn't have missed the train.
11. We didn’t go because it rained
If it hadn't rained, we would have gone.
12. I’m sorry that I didn’t finish my homework last night
I wish I had finished my homework last night.
13. The child will die if nobody sends for a doctor
Unless a person sends for a doctor, the child will die.
14. Susan felt sick because she ate 4 cream cakes
If Susan hadn't eaten 4 cream cakes, she wouldn't have felt sick.
15. Maria didn’t apply for the job in the library and regrets it now
Maria wishes she had applied for the job in the library.
16. John is fat because he eats so many chips
If John didn't eat so many chips, he wouldn't be fat.
17. It’s a pity I didn’t take my doctor’s advice
I wish I had taken my doctor's advice.
18. The accident happened because the train driver ignored a warning light
If the train driver hadn't ignored a warning light, the accident wouldn't have happened.
19. We got lost because we didn’t have a map
If we had had a map, we wouldn't have got lost.
20. Mrs. Taylor doesn’t like living in such a small house
Mrs. Taylor wishes she didn't live in such a small house.
21. If Joe doesn’t change his ways, he will end up in prison
Unless Joe changes his ways, he will end up in prison.
22. If he doesn’t work harder, he’ll lose his job
Unless he works harder, he'll lose his job.
23. Elizabeth got a bad cold because she started smoking cigarettes
If Elizabeth hadn't started smoking cigarettes, she wouldn't have gotten a bad cold.
24. 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.
Question 24. We don’t practice English very often - We can’t communicate with foreigners.
We could communicate with foreigners if we practiced English very often _____________________________________________________________ .
Question 25. I can’t meet you now- I have to work.
If i didn’t have to work, I could meet you now
EXERCISE IV: Use “if” in place of “unless”
1/ We won’t go out unless it stops raining.
→ If it doesn't stop raining, we won't go out
2/ I will call the police unless you give back my bicycle.
→ If you don't give back my bicycle, I will call the police.
3/ You wouldn’t be able to do this exercise unless your English were good.
→ If your English weren't good, you wouldn't be able to do exercise.4/ Unless we had enough rain, we couldn’t grow rice.
→ If we didn't have enough rain, we couldn't grow rice.
5/ The fishermen couldn’t have caught a lot of fish unless they had had good nets.
→ If the fishermen hadn't had good nets, they couldn't have caught a lot of fish.
6.I wouldn't buy it unless I could afford it.
→ If I couldn't afford it, I wouldn't buy it.
7.I would refuse to go unless they paid my expenses.
→ If they didn't pay my expenses, I would refuse to go.
8.I don't agree with his economic policy.I wouldn't vote for him unless he changed it.
→ I don't agree with his economic policy. If he didn't change it, I wouldn't vote for him.
9.He wouldn't have written unless he had heard news.
→ If he hadn't heard news, he wouldn't have written.
10.You might not have a terrible toothache unless you went to the dentist regularly.
→ If you didn't go to the dentist regularly, you might not have a terrible toothache.
1. We won't go out if it doesnt stop raining
2. I will call the polive if you dont give back my bicycle
3. You wouldnt be able to do this exercise if your english were not good
4. If we didn't have enough rain, we couldn't grow rice
5. The fisherman couldnt have caught a lot of fish if they hadn't had good nets
6. If i could afford it, i would bye it
7. If they paid my expenses, i would rếu to go
Tìm lỗi sai và sửa
1. If someone came -> comes into the store, smile and say, “ May i help you?’’
2. If you try these cosmetics, you look -> will look five years younger
3. If you do -> did not understand what were written in the book you could ask Mr, Pike
4. I will come to meet Mr, Pike and tell him about your problems if you didn't -> don't solve them yourself
5. Sam will not graduate unless he doesn’t pass -> passes all the tests
6. If there isn’t enough food, we couldn’t ->can't continue our journey
7. Unless your pour oil on water, it will -> won't float
8. You will have to take a taxi home if you want to leave now
9. If anyone will phone -> phones , tell them i’ll be back at 11:00
10. We can hire a minibus if there will be -> are enough people
1. If someone came -> comes into the store, smile and say, “ May i help you?’’
2. If you try these cosmetics, you look -> will look five years younger
3. If you do -> did not understand what were written in the book you could ask Mr, Pike
4. I will come to meet Mr, Pike and tell him about your problems if you didn't -> don't solve them yourself
5. Sam will not graduate unless he doesn’t pass -> passes all the tests
6. If there isn’t enough food, we couldn’t ->can't continue our journey
7. Unless your pour oil on water, it will -> won't float
8. You will have to take a taxi home if you want to leave now
9. If anyone will phone -> phones , tell them i’ll be back at 11:00
10. We can hire a minibus if there will be -> are enough people
Exercise 6 : Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she 2.If you_____to me, you wouldn’t have got so much trouble. A. listened B. would listen C. had listened D. Would have listened 3.If you don’t know how to spell a word, you_____ look it up in the dictionary. A. must B. will C. should D. ought 4.If the sun _____, we _____for a walk. A. shines / will go B. shone / will go C. shone / would go D. had shone / would go 5.The campfire _____ if it _____ last night. A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains 6.But for our parents, we _____ successful in life. A. will never be B. would never be C. wouldn’t have be D. would have never been 7.If I _____ my wallet at home this morning, I _____ money for lunch now. A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had 8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do. A. were / would know B. is / will know C. had been / would have known D. was / would know 9.If we _____ the plans carefully, we would not have had so many serious mistakes. A. study B. had studied C. studied D. were studying 10.I will never talk to you again _____ you apologize me _____ your being rude. A. if / for B. unless / for C. or / of D. whether / or 11._____if you work harder, you will be sacked. A. Whether B. If C. However D. Unless 12.I think you should stop smoking. A. If I am you, I will stop smoking. B. If I were you, I will stop smoking. C. If I were you, I would stop smoking. D. If I had been you, I would stop smoking. 13.If you take the ice out of the fridge, it _____. A. vaporizes B. melts C. heats D. disappears 14.We should do something to protect water from being polluted _____we will have nothing to drink in the future. A. if B. whether C. or D. unless 15.Let’s knock on their door to see _____home. A. if they’re B. unless they’re C. whether they were D. if they were 16.Unless we _____more snow, we can’t go skiing. A. will have B. have C. have had D. had 17.You’ll fail the exam _____ you start revising. A. if B. until C. when D. unless 18.Unless you wash the car, you _____not drive it at the weekend. A. would B. could C. have to D. may 19.If Peter _____his car before the drive, he _____the problem of out of petrol. A. checked / will not get B. had checked / would not have got C. checks / will not have got D. would be checking / will not have got 20.He stepped on the mine, and it exploded. A.If he doesn’t step on the mine, it doesn’t explode. B.If he doesn’t step on the mine, it won’t explode. C.If he didn’t step on the mine, it wouldn’t explode. D.If he hadn’t stepped on the mine, it wouldn’t have exploded. 21. In my experiments, the liquid is cooled to 32ºF. It always freezes. A.If you cool the liquid to 32 degrees, it froze. B.If you cooled the liquid to 32 degrees, it would freeze. C.If you cool the liquid to 32 degrees, it will freeze. D.If you had cooled the liquid to 32 degrees, it would have frozen. 22.It may rain this afternoon. I hope it doesn’t because I don’t want the match to be cancelled. A. If it rains, the match is cancelled. B. If it rains, the match will be cancelled. C. if it rained, the match would be cancelled D. If it had rained, the match would have been cancelled. 23.Unfortunately, I don’t know Philosophy, so I can’t answer your question. A.If I know Philosophy, I can answer your question. B.If I know Philosophy, I will be able to answer your question. C.If I knew Philosophy, I would be able to answer your question. D.If I had known Philosophy, I would have been able to answer your question. 24._____ there are some more ideas, we can end the meeting now. A. If B. As if C. Unless D. In case 25.If he _____with us now, he _____ the beauty of nature of the National Park. A. is / can enjoy B. was / will enjoy C. has been / would enjoy D. were / could enjoy 26.If they had searched more carefully, they...the watch sooner. A. will find B. would find C. found D. would have found 27.If I had got up early, I _____ to have breakfast now. A. have B.I had C. would have D. would have had 28.I cannot buy a new computer _____ I save enough money. A. if B. even if C. unless D. as if 29.Most people you meet will be polite to you _____. A. if you are polite to them B. if you will be polite to them C. unless you are polite to them D. if you were polite to them 30.If you do so, it _____ the matter worse. A. makes only B. would only make C. will only make D. had only made 31.You _____ English fluently unless you practice it every day. A. will speak B. will not speak C. can speak D. did not speak 32.Hurry up _____ you will miss the bus and be late for school. A. if B. and C. or D. as 33.You will get a good seat if you _____ first. A. come B. came C. have come D. will come 34.Sam will not graduate_____. A. if he passed all the tests B. if he does not pass all the tests. C. unless he passes all the tests D. unless he had passed all the tests. 35.If I had time, I would go with you. A.I am free and surely go with you. B.I am too busy to go with you. C. I will go with you because I have time. D. I am free enough to go with you. 36.If Margaret hadn’t been wearing a seat belt, she.... Injured. A. has been B. would has been C. would be D. would have been 37.If I _____ the rain yesterday, I_____ ill. A. had not caught / would have been B. had not caught / would have not been C. have not caught / were not D. have not caught / would have been 38.He looked frightened as if he _____ a ghost. A. sees B. is seeing C. has seen D. had seen 39.What _____if there _____ a serious nuclear accident. A. will happen / was B. happens / were C. would happen / were D. would happen / had been
Lần sau bn vt thì cách ra cho dễ nhìn nhé~~~~
Choose the best answer for each of the following sentences. 1._____have enough apples, she’ll make an apple pie this afternoon. A.Should she B. If she C. Will she D. Unless she
2.If you_____to me, you wouldn’t have got so much trouble.
A. listened B. would listen C. had listened D. Would have listened
3.If you don’t know how to spell a word, you_____ look it up in the dictionary.
A. must B. will C. should D. ought
4.If the sun _____, we _____for a walk.
A. shines / will go B. shone / will go C. shone / would go D. had shone / would go
5.The campfire _____ if it _____ last night.
A. wouldn’t be cancelled / hadn’t rained B. wouldn’t have been cancelled / hadn’t rained C. would have been cancelled / hadn’t rained D. will be cancelled / rains
6.But for our parents, we _____ successful in life.
A. will never be B. would never be C. wouldn’t have be D. would have never been
7.If I _____ my wallet at home this morning, I _____ money for lunch now.
A. leave / will have B. didn’t leave / would have C. hadn’t left / would have D. hadn’t left / would have had
8.It is too bad, Lam isn’t here. If he _____ here, he _____ what to do.
A. were / would know B. is / will know C. had been / would have known D. was / would know
9.If we _____ the plans carefully, we would not have had so many serious mistakes.
A. study B. had studied C. studied D. were studying
10.I will never talk to you again _____ you apologize me _____ your being rude.
A. if / for B. unless / for C. or / of D. whether / or
EXERCISE IV: Use “if” in place of “unless”
1/ We won’t go out unless it stops raining.
- We won't go if it doesn't stop raining
2/ I will call the police unless you give back my bicycle.
- I will call the police if you don't give back my bicycle
3/ You wouldn’t be able to do this exercise unless your English were good.
- You wouldn’t be able to do this exercise if your English weren't good
4/ Unless we had enough rain, we couldn’t grow rice.
- If we didn't have enough rain, we couldn't grow rice
5/ The fishermen couldn’t have caught a lot of fish unless they had had good nets.
- The fishermen couldn’t have caught a lot of fish if they hadn't had good nets
EXERCISE IV: Use “if” in place of “unless”
1/ We won’t go out unless it stops raining.
=> We won’t go out if it doesn't stop raining.
2/ I will call the police unless you give back my bicycle.
=> I will call the police if you don't give back my bicycle.
3/ You wouldn’t be able to do this exercise unless your English were good.
=> You wouldn’t be able to do this exercise if your English were not good.
4/ Unless we had enough rain, we couldn’t grow rice.
=> If we didn't have enough rain, we couldn’t grow rice.
5/ The fishermen couldn’t have caught a lot of fish unless they had had good nets.
=> The fishermen couldn’t have caught a lot of fish if they hadn't had good nets.
1. She doesn’t live in London because she doesn’t know anyone there
=> If she knew someone there, she would lived in London …
2. I don’t have a spare ticket. I can’t take you to the concert
=> If I …had a square ticket,i could take you to the concert
3. The schoolchildren sowed some seeds, but they forgot to water them so they didn’t grow.
=> If the children had watered some seeds,they would have grown …
4. They don’t understand the problem. They won’t find a solution
=> If they understood the problem, they would find a solution …
5. Carol didn’t answer the phone because she was studying..
=> If Carol hadn’t been studying,she would have answered the phone 📱 …
6. Rita is exhausted today because she didn’t get any sleep last night.
=> If Rita had got sleep last night,she wouldn’t be exhausted today ……
7. He can’t park near his office; that’s why he doesn’t come by car
=> If he …could park near his office,he would come by car 🚘
8. The flats are not clearly numbered, so it is very difficult to find anyone.
=> If the flats …were clearly numbered,it wouldn’t be very difficult to find anyone .
9. I don’t know her e-mail address, so I can’t tell you
=> If I …knew her email address,i could tell you …
10. She works in the evening. She has no time to play with her children
=> If she …didn’t work in the evening, she would have time to play with her children 👶
11. He doesn’t see the signal so he doesn’t stop his car
=> If he …saw the signal,he would stop his car 🚗 …
12. Peter gets bad marks because he doesn’t prepare his lessons well
=> If Peter prepared his lessons well, he wouldn’t get bad marks ……
13. Mary doesn’t have enough money. She can’t buy a new car.
> If Mary…had enough money,she could buy a new car 🚗 …
I. Choose the best aswer for each of the following sentences.
1. I shall never get used ______ on the left.
A. to drive B. to driving C. drive D. driving
2. Is Dand, (who’s/ whose/ who/ whom) works I respect highly, still a doctor?
3. How – since we – school?
A. are you - left B. have you been - have left
C. were you - left D. have you been - left
4. (unless/ without/ because/ if not) you agree, nothing can be arrarged.
5. They (will have/ would have/ are having/ have had) a lovely garden if they did some work on it.
6. You (haven’t/ mustn’t have/ don’t have/ aren’t have) to take that English cousse
7. I hope I don’t have (too many/so many/too much/so much) luggage.
8 . Neither the director nor his assistant (have come/ haven’t come/ has come/hasn’st come) yet.
Biến đổi Unless= if …….not.
1. If Andrew is not lazy, he will pass the final examination. (unless)
→ Unless Andrew is lazy, he will pass the final examination
2. John will not catch the train unless he runs more quickly. (If)
→ If John doesn't run more quickly, he will not catch the train
3. The tree will die if it isn’t watered every day. (unless)
→ Unless the tree is watered every day, it will die
4. Life won’t be very easy if we don’t earn lots of money. (unless)
→ Unless we earn lots of money, life won’t be very easy
5. If you don’t practice more often, your English won’t be better.
→ Unless you practice more often, your English won’t be better
6. Jack will be dismissed if he doesn’t try to work harder.
→ Unless Jack tries to work harder, he will be dismissed
14. The park is over there, only 5 minutes’ walk. => If you walk to the park over there, it takes you only 5 minutes.
15. Leave me alone or I’ll call the police. =>Unless you leave me alone, I will call the police.
16. If you arrive at the office earlier than I do, please turn on the airconditioner. => Should you arrive at the office earlier than I do, please turn on the airconditioner.
17. The children don’t go to school in the snowy weather. => If it is snowy, The children won’t go to school...................................................................................
19. You must tell me the whole truth or I won’t help you. => Unless you tell me the whole truth, i won't help you.
20. The car breaks down so often because you don’t take good care of it.
=> Were I..........to take good care of the car, it would not break down......................
21. He is very bad tempered, that’s why his wife left him soon after marriage.
=> If he were not bad tempered, his wife wouldn't have left him soon after marriage...........
22. Don’t tell lies to your boss or you’ll be fired at once.
=> If........you tell lies to your boss, you 'll be fired at once.............
23. She got married at such an early age: otherwise, she would be at university now.
=> Had it not been for her marriage at such an early age, she would be at university now..........
Exercise 9 : Rewrite the following sentences
14. The park is over there, only 5 minutes’ walk. => If you walk...........5 minutes, you will reach the park............................................
15. Leave me alone or I’ll call the police. =>Unless....you leave me alone, i won't call the police............................................................................................
16. If you arrive at the office earlier than I do, please turn on the airconditioner. => Should.........you turn on the airconditioner when you arrive at the office earlier than I do..................................................................................
17. The children don’t go to school in the snowy weather. => If it .......is snowy, The children won’t go to school...................................................................................
19. You must tell me the whole truth or I won’t help you. => Unless...........you tell me the whole truth, i won't help you...............................................................................
1. Fred wouldn’t do that if he didn’t have your permission.
Unless............Fred had your permission, he wouldn't do that ........................................................................... .
2. If you don’t leave immediately, I will call a policeman.
Unless ..........you leave immediately, I will call a policeman. ................................................................................ .
3. We won’t have a holiday because we don’t have enough money.
If we...........have enough money, we will have a holiday ................................................................................ .
4. I don’t know the answer, so I can’t tell you.
If I........knew the answer, I could tell you....................................................................................... .
5. If you didn’t agree with him, Charrles wouldn’t even suggest it.
Unless .......you agreed with him, Charrles wouldn’t even suggest it............................................................................... .
6. If you study harder, you are going to pass the exam.
Unless ......you study harder, you aren't going to pass the exam. ............................................................................... .
7. I wouldn’t have believed it if I hadn’t seen it with my own eyes.
Unless.........I had seen it with my own eyes, I would have believed it........................................................................ .
8. Go to bed early or you will be tired the next morning.
If you ......don't go to bed early, you will be tired the next morning................................................................................... .
9. Without the map, we would have got lost.
If it .....hadn't been for the map, we would have got lost. ....................................................................................... .
10. We couldn’t go for a picnic because it rained heavily.
If ............it hadn't rained heavily, we could have gone for a picnic ................................................................................... .
11. Jim works very hard. He has no time to spend with his family.
If ...........Jim didn't work hard, he would have time to spend with his family. .................................................................................... .
12. We didn’t bring enough money with us, so we couldn’t buy the car.
If...........we had brought enough money with us,we could have bought the car......................................................................................... .
13. Take an umbrella or you will be wet..
If …………you don't take an umbrella, you will be wet..………………………………………………….. .
1. Fred wouldn’t do that if he didn’t have your permission.
Unless he had your permission,Fred wouldn’t do that
2. If you don’t leave immediately, I will call a policeman.
Unless you leafes immediately, I will call a policeman.
3. We won’t have a holiday because we don’t have enough money.
If we had enough money,we would have a holiday
4. I don’t know the answer, so I can’t tell you.
If I knew the answer, I could tell you.
5. If you didn’t agree with him, Charrles wouldn’t even suggest it.
Unless you agreed with him, Charrles wouldn’t even suggest it.
6. If you study harder, you are going to pass the exam.
Unless you study harder,you won't pass the exam
7. I wouldn’t have believed it if I hadn’t seen it with my own eyes.
Unless I had seen it with my own eyes, I wouldn’t have believed
8. Go to bed early or you will be tired the next morning.
If you go to bed early , you won't be tired the next morning.
9. Without the map, we would have got lost.
If it had had the map, we wouldn't have got lost.