4.If you don't go to Da Nang, you'll never climb Ngu Hanh Mountains 

->

5.If you don't go to India, you'll never see Taj Mahal 

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6.If you don't answer my question, i won't go anywhere

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7.I won't let you go if you don't give me my money back

->

8.I'll call the police if you don't go away 

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9.If you don't complain the manager, you'll always get bad service

->

10. If you don't have enough meoney, you can't buy this car

->

II. Make conditional sentences, using if or unless. 1. Ican't finish this task if you don't give me a hand. 2. You will run out of money if you don't stop wasting it. 3. Don't call me unless it is an emergency. 4. James will not pass the test unless he studies harder. 5. If Jane finishes her work before 6 p.m, she will dine out with her friends. 1. Work hard and you will pass your exam. If 2. My brother is not good at playing tennis. My brother does not . 3. r'll be on vacation next week, so I won't be able to attend the meeting. Since 4. If you don't start working hard now, you won't be able to pass the final test. Unless . 5. Someone should take this garbage to the garbage dump soon. This garbage 1. I am a member of the anti-pollution program in my school. I often go to school by bus. (so) 2. The trees in this area were cleaned off. Public facilities would be constructed. (because of) 3. All the roads were flooded because it had been raining heavily. (due to) 4. Jimmy ate a lot of fast food, so he put on 10kilograms within just two months. (because) 5. My father got upset because I repeatedly left on the lights I was not using. (so)

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.

IV. Rewrite these sentences using the wordgiven.

1) If we don’t leave now, we’ll be late for school. (unless)

2) If I don’t borrow Patrick’s lawn mower, it will take me ages to cut the grass.
(unless)

3) The headache won’t go away unless you do something about it. (if)

4) Unless they stop that noise, I’ll call the police. (if)

5) She won’t find tickets for the concert if she doesn’t book them soon. (unless)

6) He will never find a job unless he starts looking for one now. (if)

7) Mum won’t let him go out if he doesn’t finish his homework first. (unless)

8) You won’t finish on time if you don’t start now. (unless)

9) The mirror will fall unless you use a strong nail. (if)

10) Unless you remind me, I’ll forget to post the letter. (if)

11) Unless it rains, we’ll go to the football match. (if)

12) If the neighbours don’t stop making that awful noise, I’ll call the police.
(unless)

13) She won’t hear you if you don’t speak louder. (unless)

14) I’ll be back at six unless I have to work late. (if)

15) Unless you study harder, you’ll fail the test. (if)

16) We’ll go to the cinema tonight if I’m not too tired. (unless)

17) Unless you read the instructions, you won’t know what to do. (if)

18) They’ll stay in a hotel if their relatives don’t have a spare room. (unless)

Exercise 4. Use “if” in place of “unless”

1/ We won’t go out unless it stops raining.

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2/ I will call the police unless you give back my bike.

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3/ You wouldn’t be able to do this exercise unless your English were good.

-____________________________________________________________

4/ Unless we had enough rain, we couldn’t grow rice.

-____________________________________________________________

5/ I wouldn’t buy it unless I could afford it.

-____________________________________________________________

6/ I would refuse to go unless they paid my expenses.

-___________________________________________________________

7/ You don’t get there in time if you don’t hurry.

-___________________________________________________________

8/ We can’t do the job if we don’t get help.

-___________________________________________________________

9/ You are allowed into the club only if you are member.

-___________________________________________________________

Exercise 4. Use “if” in place of “unless”

1/ We won’t go out unless it stops raining.

-____________________________________________________________

2/ I will call the police unless you give back my bike.

-____________________________________________________________

3/ You wouldn’t be able to do this exercise unless your English were good.

-____________________________________________________________

4/ Unless we had enough rain, we couldn’t grow rice.

-____________________________________________________________

5/ I wouldn’t buy it unless I could afford it.

-____________________________________________________________

6/ I would refuse to go unless they paid my expenses.

-___________________________________________________________

7/ You don’t get there in time if you don’t hurry.

-___________________________________________________________

8/ We can’t do the job if we don’t get help.

-___________________________________________________________

9/ You are allowed into the club only if you are member.

-___________________________________________________________