Use "Unless" instead of "If" and versa:

10. You don't get there in time if you don't hurry.

-> Unless ______________________________________________

11. We can't do the job if we don't get help.

-> Unless ______________________________________________

12. I don't like fish. I wouldn't eat it if it wasn't extremely hungry.

-> Unless ______________________________________________

13. I wouldn't have bought the picture if I didn't like it.

-> Unless ______________________________________________

14. They will kill him if he doesn't tell them the truth.

-> Unless _______________________________________________

15. If you don't take morning exercise, you will be weak.

-> Unless ________________________________________________ 

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 15^th , 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 ...................... . …………………………………………………………………………………………..

EXERCISE 1: Rewrite the following sentences using “Unless”

1. I won’t go to school if I don’t feel better.

2. Tony will walk to you is you question him.

3. If you don’t put on your overcoat, you’ll be cold.

4. You will fail the exam if you don’t work hard.

5. You’ll get a cold if you don’t keep your feet dry.

6. If I don’t leave now, I’ll miss my flight.

7. If you aren’t going to the party, I won’t go.

8. I can’t send you a postcard if  you don’t give me your address.

9. If I won a big prize in a lottery, I’d build a school for the poor.

10. I’ll call the police if you don’t leave me alone.

EXERCISE 2: Rewrite the following sentences using conditional sentences type 2.

1. They are poor, so they can’t help us.

2. He doesn’t do this homework. He is always punished.

3. He doesn’t have enough time. He can’t help me.

4. She doesn’t take any exercise, so she is overweight.

5. He doesn’t have a bicycle, so he always goes to class late.

6. I am bad at English, so I can’t do homework.

7. He doesn’t practise speaking French, so he doesn’t speak it fluently.

8. The meeting can be cancelled because it snows heavily.

9. We don’t go because it will rain.

10. John is fat because he eats so many chips.

EXERCISE 3: Rewrite the following sentences using conditional sentences type 3

1. He didn’t hurry, so he missed the train.

2. We didn’t go because it rained.

3. We got lost because we didn’t have a map.

4. He lost his job because he was late everyday.

5. The dress was so expensive. She could not buy it.

6. Sue felt sick because she ate four cream cakes.

7. My brother left the car keys, so I had to pick him up at the station,

8. We didn’t go on holiday because we didn’t have enough money.

9. He didn’t have the ticket to the game last week. He wasn’t be able to get in.

10. Robert got a bad cough because he started smoking cigarettes.

Exercise 1: Fill the suitable word in the blank:

1. If the phone ……. (ring), ……….. (you/answer) it?

2. He …………. (find) a part time job if he ……….. (keep) looking.

3.

A: We don’t have any bread.

B: I know. I …………….. (get) some from the shop.

4.

A: Why do you need to borrow my suitcase?

B: I ………….. (visit) my mother in Scotland next month.

Finish each of the following sentences in such a way that it is as similar as possible in meaning to the original sentence.

1. I didn’t know that you were in the hospital, so I didn’t visit you.

→ If ____________________________________________.

2. Hurry up or you will be late.

→ If ____________________________________________.

3. She is very busy, so she can’t help me now.

→ If ____________________________________________.

4. He didn’t phone me because he didn’t know my phone number.

→ If ____________________________________________.

5. You’re unfit because you don’t take exercise.

→ If ____________________________________________.

6. Unless you are careful, you will cut yourself with that knife.

→ If ____________________________________________.

7. If I have time, I’ll help you.

→ Unless ____________________________________________.

8. He didn’t study his lessons very carefully, so he gets bad marks now.

→ If ____________________________________________.

9. Dick often causes accidents because he drives carelessly.

→ If ____________________________________________.

10. I can’t apply for that job because I don’t know English.

→ If ____________________________________________.

1. If it rains tomorrow, we ____ (stay) at home.
2. If Walter ____(get) the job, he can earn a lot of money.
3. If it ____(not rain) this afternoon, we will play soccer.
4. If I _____(see) Emily, I will give her the book.
5. If you don’t hurry, we ____(be) late for class.
6. If Helen drives carefully, she _____(not have) any accidents.
7. If you _____(mail) the letter now, he may receive it on Friday.
8. He will go to the pharmacy if he ____(need) some medicine.

1. If it rains tomorrow, we ____ (stay) at home.
2. If Walter ____(get) the job, he can earn a lot of money.
3. If it ____(not rain) this afternoon, we will play soccer.
4. If I _____(see) Emily, I will give her the book.
5. If you don’t hurry, we ____(be) late for class.
6. If Helen drives carefully, she _____(not have) any accidents.
7. If you _____(mail) the letter now, he may receive it on Friday.
8. He will go to the pharmacy if he ____(need) some medicine.