1. You won't get in if you don't have reserved seats.
Unless you have reserved seats, you won't get in.
1. You won't get in if you don't have reserved seats.
Unless you have reserved seats, you won't get in.
Write a new sentence with a similar meaning to the first sentence, using unless. The plants won't grow unless you water them...
2. The machine won't start if you don't plug it in.
3. The union will call a strike if staff are not given a pay rise.
4. If the government fails to act, there will be a water shortage.
5. The programme is likely to go ahead if there isn't a last-minute hitch.
6. If there is not an examination at the end of the course, some students will not study seriously.
7. If they don't enjoy what they are doing, people tend not to succeed.
8. Without a valid library card, students cannot use the library.
9. If no measures are taken, the situation will get worse.
10. If the patient's condition doesn't deteriorate, she should make a full recovery.
4. Write an If... sentence with the same meaning as the first sentence. Sometimes there is more than one possible answer.
2. Without water, life on Earth would be impossible,
3. Everyone speaks different languages, so people don't get on well together.
4. We haven't got a computer so it isn't as easy to do the calculations.
5. Food isn't distributed fairly so some people don't have enough to eat.
6. People don't give up smoking because they probably don't know the risks involved.
7. Aliens might land on Earth unnoticed
8. The library doesn't open on Sunday so we can't go there to study
9. Greater use of public transport would cut the amount of pollution from cars.
10. People who are overweight eat too much and don't take enough exercise.
Finish the second sentence in each pair, using If or Unless.
1. If you don’t do better work than this, you won’t pass the exam.
2. You can’t visit the United States unless you get a visa.
3. Unless someone has a key, we can’t get into the house.
4. Unless he phones immediately, he won’t get any information.
5. If Joe doesn’t change his ways, he will end up in prison.
6. If he doesn’t work harder, he’ll lose his job.
7. If it rains, we won’t go swimming.
8. You will become ill unless you stop working so hard.
9. If you work hard, you’ll pass your exam.
10. Unless you hurry, you won’t catch the bus.
11. If he doesn’t start work right now, he’ll never finish it.
12. We won’t get there on time without taking a taxi.
13. Joan will stay on at school unless she finds a good job before September.
14. If you don’t rest, you really will be ill.
15. The child will die if nobody sends for a doctor.
16. You won’t find any accommodation if you don’t book it in advance.
17. You will catch a cold if you don’t keep your feet dry.
18. I’ll call the police if you don’t leave me alone.
20. If he fails the final examination, he won’t be able to graduate.
21. If you are not careful, you will cut yourself with that knife.
22. If you don’t like this one, I’ll bring you another.
23. I’ll not able to do any work if I don’t have a quiet room.
24. If she doesn’t hurry, she’ll be late.
If he doesn’t take more care, he’ll have an accident.
-> Unless . ……………………………………………………………………………………………………….. .
The crops will be ruined if it doesn’t rain soon.
-> Unless ......... . ………………………………………………………………………………………………..
27. Unless the weather is fine, we’ll stay at home.
-> If . . . . ………………………………………………………………………………………………………..
28. I can’t go with you unless I get my work finished.
-> If ............... . ………………………………………………………………………………………………………..
29. If you don’t leave on the 15th , you’ll get home late for your mother’s party.
-> Unless............ . ………………………………………………………………………………………………..
30. Tom never does anything unless his father tells him what to do.
-> If ............ . ………………………………………………………………………………………………………..
31. Don’t take this job if you don’t really want it.
-> Unless ............ . ………………………………………………………………………………………………..
32. If she does nothing to prepare for the test, she will get bad marks.
-> Unless ......... . ……………………………………………………………………………………………………..
33. You can’t visit the United States unless you get a visa.
-> If ............... . ………………………………………………………………………………………………………..
34. Unless you remember our address, you can find it in the phone book.
-> If ...................... . …………………………………………………………………………………………..
Rewrite the following sentences that keep the same meaning.(If=>Unless)
5. If you don’t rest yourself you really will be ill.
=> Unless ……………………………..……………………
1.If you don't study harder, you 'll get bad marks.
=> Unless ..........................................................................
2.Unless this man is a driver, he can’t help you move by car.
=>If.................................................................................................................................
3. If he doesn't practice writing every day, he can't improve his writing skill.
=> Unless ..........................................................................
6. If you are absent from school, you have to write a sick-note.
1 If you (find) a skeleton in the cellar, don't mention it to anyone.
2 If you pass your examination, we (have) a celebration.
3 What (happen) if I press this button?
4 I should have voted for her if I (have) a vote then.
5 If you go to Paris, where you (stay)?
6 If someone offered to buy you one of those rings, which you (choose)?
7 The flight may be cancelled if the fog (get) thick.
8 If the milkman (come), tell him to leave two pints.
9 Someone (sit) on your glasses if you leave them there.
10 You would play better bridge if you (not talk) so much.
11 What I (do) if I hear the burglar alarm?
12 If you (read) the instructions carefully, you wouldn't have answered the wrong question.
13 I could repair the roof myself if I (have) a long ladder.
14 Unless they turn that radio off, I (go) mad.
15 If you were made redundant, what you (do)?
16 We'll have a long way to walk if we (run) out of petrol here.
17 If you shake that bottle of port, it (not be) fit to drink.
18 I'll probably get lost unless he (come) with me.
19 You (not have) so many accidents if you drove more slowly.
20 If you (wear) a false beard, nobody would have recognized you.
21 If she (leave) the fish there, the car will get it.
22 Unless they leave a lamp beside that hole in the road, somebody (fall) into it.
23 You'll get pneumonia if you (not change) your wet clothes.
24 If I had known that you couldn't eat octopus, I (not buy) it.
25 If they (hang) that picture lower, people would be able to see it.
26 She (be able) to walk faster if her shoes hadn't such high heels.
27 I (bring) you some beer if I had known that you were thirsty.
28 If you had touched that electric cable, you (be) elecrocuted.
29 If the story hadn't been true, the newspaper (not print) it.
30 I (not buy) things on the instalment system if I were you.
31 Dial 999 if you (want) Police, Ambulance or Fire Brigade.
32 You (not be) any use to me unless you learn to type.
33 If anyone attacked me, my dog (jump) at his throat.
34 If he were in, he (answer) the phone.
35 The ship would have run around if the pilot (make) one mistake.
36 I shouldn't have taken your umbrella if I (know) that it was the only one you had.
Rewrite:
1. I'll help you if you promise to try harder
-Unless...................................................
2. When you press this button, this machine will start
- If.................................................................
3. Today is an awful day, so we can't go to the beach
- If...........................................................
4. It is raining, so we can't go out
- Unless.................................................
5. If you don't rest yourself, you really will be ill
- Unless..................................................
6. Unless he phones immediately, he won't get any information
- If.............................................................
7. We got lost because we didn't have a map
- If............................................................
8. You'd better learn English
- If I were...................................................
9. If you don't start at once, you will be late
- Unless....................................................
10. Unless you water the tree every day, it will die
- If...............................................................
Task 2: Supply the correct verb form
1. If we meet at 9:30, we (have) _________________plenty of time.
2. Lisa would find the milk if she (look) _________________ for it in the fridge.
3. What (happen) _________________if I press this button?
4. The door will be unlocked if you (press)_________________ the green button.
5. If you go to Paris, where you (stay) _________________?
6. The flight may be cancelled if the fog (get) _________________thick.
7. If the milkman (come) _________________, tell him to leave two pints.
8. I (call) _________________ the office if I were you.
9. Someone (sit) _________________on your glasses if you leave them there.
10. What I (do) _________________if I hear the burglar alarm?
11. Unless they turn that radio off, I (go) _________________mad.
12. If you were made redundant, what you (do) _________________?
13. If you spoke louder, your classmates (understand) _________________ you.
14. I'll probably get lost unless he (come) _________________with me.
15. You (not have) _________________ so many accidents if you drove more slowly.
16. If she (leave) _________________ the fish here, the cat will eat it.
17. Unless you (tell) __________________ the truth, I won’t help you.
18. If they (hang) ___________ that picture lower, people would be able to see it.
19. She (be) _________able to walk faster if she didn’t have such high-heel shoes.
20. Dan (arrive) _________________ safe if he drove slowly.
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.
Chuyển sang câu bị động:
1. If you don't break the rules, the teacher won't punish you.
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2. If Tom threw a party, I would refuse his invitation.
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3. If Mary didn't accept his proposal, he might sell his house.
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4. If teacher had corrected the exercises, the students wouldn't have made many mistakes.
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5. She won't buy this car if it doesn't appear any new features.
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6. John sells his house because ghosts haunt it.
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