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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
I. Put the verds in brackets into the correct forms:
1. If I (have) .have.... time, I will write to him.
2. If it's cold, I (need) .will need... a heavier coat
3. What are you going to do if you (have).have... a holiday?
4. If I meet Helen, I (give)..will give... her your messenger
5. If I can go tomorrow, I (let)...will let.. you know
6. If flowers don't get any water, they (die)..will die..
7. Don't come if they (not call)..don't call..you
8. If I didn't feel so tired, I (go)...would go. out with you.
9. I could repair the car if I (have).had... the right tools.
10. If she hadn't been ill yesterday, she (go).would have gone.... to work now.
II. Rewrite these sentences, beginning as shown, so that the meaning stays the same:
1. If you don't like this one, I'll bring you another.
=> Unless you like this one, I'll bring you another.
2. I'll only help you if you promise to try harder.
=> Unless you promise to try harder,. I won't help you
3. Unless you work hard, you will not fail the exam
=> If you don't work hard, you will not fail the exam
4. Stand up or you will be punished.
=> Unless you don't Stand up ,you will be punished.
5. Do your homework or you will get bad mark
=> If you don't Do your homework,you will get bad mark
III. Rewrite these sentences use "If"
1. I don't know enough about this machine, so I can't mend it myself.
=> If I knew enough about this machine, I could mend it myself.
2. I don't ride the bus to work every morning because it's always so crowed
=> If it weren't always so crowed, I would ride the bus to work every morning
3. The wwind is blowing hard, so I won't take the boat out for ride.
=> If The wwind wern't blowing hard, I would take the boat out for ride.
4. Nick can'r find the way because he doesn't have a map.
=> If Nick had a map,He could find the way
5. Susan felt sick because she ate many cream cake.
=> If susan hadn't eaten many crea, cake,she wouldn't have felt sick
6. Without this treatment, the patient would have died.
=> If it hadn't been for this treament, the patient would have died.
7. Those people weren't prepared to face the floods; therefore, the consequence was disastrous
=>If Those people had been prepared to face the floods; the consequence wouldn't have been disastrous
IV. Rewrite these sentences
1. The book was so expensive that I didn't buy it.
=> The book was too expensive for me to buy
2. He can touch the light because he's very tall
=> He is tall enough to touch the light
3. It is such good weather that they are going for picnic.
=> The weather is so good that they are going for picnic.
4. I didn't go and neither did my friend (either)
=> I didn't go and my friend didn't,either
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_________.
Choose the best answer for each of the fllowing sentences
1. ............ if you work harder, you will be sacked.
A. Whether B. If C. However D. Unless
2. 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
3. If you take the ice out of the fridge, it ...........
A. vaporizes B. melts C. heats D. disappears
4. 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
5. 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
6. Unless we .......... more snow, we can't go skiing.
A. will have B. have C. have had D. had
7. You'll fail the exam ........... you start revising.
A. if B. until C. when D. unless
8. Unless you wash the car, you .............. not drive it at the weekend
A. would B. could C. have to D. may
9. If Peter ............... his car before the drive, he ................ the problem of out of petrol.
A. cheked / will not get B. had checked / would not have got
C. checks / will not have got D. would be checking / will not have got
10. 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 step on the mine, it wouldn't have exploded.
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.........
Rewrite
1.She is so selfish,so we don't like her
If.......she weren’t so selfish,we would like her.............
2.If you didn't speak quickly,I cou;d understand you
Unless......you spoke quickly,i could understand you...............................
3.Hurry up or we will miss the bus
If we......don’t hurry up,we will miss the bus.........................
4.Do the test carefully or you may get bad mark
If you.....don’t do the test carefully,you may get bad mark..........................
5.Uncles Nga hurries,she will mis the last train
If Nga.....doesn’t hurry,she will miss the last train.........................
6.Mary doesn't buy this shirt because she doesn't have enouugh money
If Mary had enough money,she would buy this shirt
7.Tom eats too much,so he gets fat
If Tom.....didn’t eat too much,he wouldn’t Get fat...................
8.I am not free today,so we can't go to the beach
We could....go to the beach If i were free today..................
9.It's rainy,so the children can't go swimming
The children could.....go swimming if it weren’t Rainy ...........
10.Give him some advice or he won't know what to do
If you.....don’t give him some advice,he won’t know what to do.......................
11.He will get wet unless he puts the raincoat on
If he doesn’t Put the raincoat on,he will get wet
12.We don't buy a lot of new books because we don't have a lot of money
We would......buy a lot of new books if we had a lot of money.....
1.She is so selfish,so we don't like her
If she weren't so selfish, we would like her.
2.If you didn't speak quickly,I cou;d understand you
Unless you spoke quickly, I could understand you.
3.Hurry up or we will miss the bus
If we don't hurry up, we will miss the bus.
4.Do the test carefully or you may get bad mark
If you don't do the test carefully, you may get bad mark.
5.Uncles Nga hurries,she will mis the last train
If Nga doesn't hurry, she will miss the last train.
6.Mary doesn't buy this shirt because she doesn't have enouugh money
If Mary had enough money, she would buy this shirt.
7.Tom eats too much,so he gets fat
If Tom didn't eat too much, he wouldn't get fat.
8.I am not free today,so we can't go to the beach
We could go to the beach if i were free today.
9.It's rainy,so the children can't go swimming
The children could go swimming if it weren't rainy.
10.Give him some advice or he won't know what to do
If you give him some advice, he will know what to do.
11.He will get wet unless he puts the raincoat on
If he doesn't put the raincoat on, he will get wet.
12.We don't buy a lot of new books because we don't have a lot of money
We would buy a lot of new books if we had a lot of money.
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.
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