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a. Put the verb in brackets into the correct tense:
1.If I see him, I (give) ...........will give............................ him a gift.
2.If he (study) ...............studies..................... hard, he can pass the exam.
3.Rice plants (grow) ..........will grow...................... if there is enough rain.
4.If she (not hurry) .........does not hurry........................, she may be late.
5.If I tell you a secret, ..will............. you (promise) ......promise.................. not to tell it to anyone ?
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
Rewrite:
1. I'll help you if you promise to try harder
-Unless.......you promise to try harder, I will not help you ......
2. When you press this button, this machine will start
- If.........you don't press this button, this machine will not start ......
3. Today is an awful day, so we can't go to the beach
- If.......today weren't an awaful day, we could go to the beach ........
4. It is raining, so we can't go out
- Unless.........it is raining, we can go out ........
5. If you don't rest yourself, you really will be ill
- Unless.........you don't rest yourself, you really will be ill .......
6. Unless he phones immediately, he won't get any information
- If.........he doesn't phone immediately, he won't get any information ......
7. We got lost because we didn't have a map
- If.......we had had a map, we wouldn't have got lost ....
8. You'd better learn English
- If I were.......you, I would learn English .......
9. If you don't start at once, you will be late
- Unless........you start at once, you will be late .......
10. Unless you water the tree every day, it will die
- If.....you don't water the tree everyday, it will die .....
Rewrite:
1. I'll help you if you promise to try harder
-Unless...............you don't promise to try harder,I'll help you.........
2. When you press this button, this machine will start
- If..........you press this button, this machine will start.................
3. Today is an awful day, so we can't go to the beach
- If........ Today weren't an awful day, so we could go to the beach.....
4. It is raining, so we can't go out
- Unless...........it were raining, we could go out.............................
5. If you don't rest yourself, you really will be ill
- Unless...........you rest yourself, you really will be ill..........
6. Unless he phones immediately, he won't get any information
- If......he doesn't phone immediately, he won't get any information...
7. We got lost because we didn't have a map
- If..........we had had a map,We wouldn't have got lost.........................
8. You'd better learn English
- If I were.............you,I would learn English....................
9. If you don't start at once, you will be late
- Unless................you start at once, you will be late.................
10. Unless you water the tree every day, it will die
- If................you don't water the tree every day, it will die.........
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.
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
I. Use UNLESS instead of IF:
1. If you are not careful, you will cut yourself with that knife
- Unless...........you're careful,you will cut yourself with that knife........
2. If you do not like this one, i'll bring you another
- Unless.......you like this one, I'll bring you another........
3. She'll be late if she does not hurry.
- Unless.........she hurries,she'll be late.........
4. If you doesn't sneeze, he won't know that we are there.
- Unless........you sneeze, he won't know that we are there..........
5. If she does her hair diffrently, she will look quite nice.
- Unless........she does her hair differently she will look quite nice........
II. Make conditional sentences according to the fact provided (type1)
1. Keep silent or you wake the baby
- ............................if you don't keep silent, you will wake the baby up..................................
2. Go right now or you'll be late for the train.
-...............................unless you go right now, you'll be late for the train........................
3. Practice speaking English regularly or you will not pass this entrance exam.
-...........................unless you practice speaking english regularly, you won't pass this entrance exam ........................
I. Grammar
1. Chọn câu trả lời đúng cho mỗi câu sau:
1.1. My dog…………….bark unless it is hungry
A. don’t B. won’t
1.2. Unless you……………...to go to bed early, we should go out.
A. wants B. want
1.3. …………….you don’t slow down, we are going to crash!
A. If B. Unless
1.4. You cannot go into bars…………...you are over 18.
A. If B. Unless
1.5. In my country…………….you cannot speak English, it’s hard to get a good job.
A. If B. Unless
1.6. She’s fail the exam if she …………...study.
A. don’t B. doesn’t
1.7. We’ll be late……………..we leave soon
A. If B. Unless
1.8. ……………..I am not feeling better tomorrow i will go to the doctor’s
A. Unless B. If
1.9. ……………..you do not make the payment in time, your car will be confiscated
A. If B. Unless
1.10. You will lose your job……………..you change your attitude and become friendlier.
A. Unless B. If
I. Grammar
1. Chọn câu trả lời đúng cho mỗi câu sau:
1.1. My dog…………….bark unless it is hungry
A. don’t B. won’t
1.2. Unless you……………...to go to bed early, we should go out.
A. wants B. want
1.3. …………….you don’t slow down, we are going to crash!
A. If B. Unless
1.4. You cannot go into bars…………...you are over 18.
A. If B. Unless
1.5. In my country…………….you cannot speak English, it’s hard to get a good job.
A. If B. Unless
1.6. She’s fail the exam if she …………...study.
A. don’t B. doesn’t
1.7. We’ll be late……………..we leave soon
A. If B. Unless
1.8. ……………..I am not feeling better tomorrow i will go to the doctor’s
A. Unless B. If
1.9. ……………..you do not make the payment in time, your car will be confiscated
A. If B. Unless
1.10. You will lose your job……………..you change your attitude and become friendlier.
A. Unless B. If