11. I’ll only help you if you promise to try harder.

- Should  ……you promise to try harder., I’ll help you…………………………………………………

12. If you go out in the rain, you will not get wet.

- Unless …………you don't go out in the rain, you will not get wet. …………………………………………………………

13. I was drowning, but he saved me.

- If he ………hadn't saved me, I would have been downing…………………………………………………………

14. If it doesn’t rain soon, millions of pound’s worth of crops will be lost.

- If …it rains soon, millions of pound’s worth of crops won't be lost. ……………………………………………………………….

15. When you press this button, this machine will start.

- If ………you press this button, this machine will start.……………………………………

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

- If ……we had had a map, we wouldn't have got lost……………………………………………………………………

17. Unless someone has a key, we can get into the house.

- If  ……someone has a key, we can get into the house.……………………………………………

18. World population will continue to rise if we do not try to reduce it.

- Unless ……we try to reduce world population, it will continue to rise  ………………………………………………………………

19. You will catch a cold if you don’t keep your feet dry.

- Unless …you keep your feet dry., You will catch a cold ………………………………………………………………

20. We’ll miss our ride home if we don’t leave now.

- Unless …we leave now,  We’ll miss our ride home…………………………………………………………

21. If you don’t rest, you will be ill.

- Unless …you rest, you will be ill. ………………………………………………………………

22. This tree won’t grow if there no water.

- Unless …there is water, This tree won’t grow………………………………………………

a. If you __press____ (press) this button the machine ___will start__ (start)

b. If I __dont practice__ (not practice) the piano every evening I ___will forget___ (forget) how to play it.

c. If we __take___ (take) our dog to the park she ___will run___ (run) away.

d. If/When I ____miss____ (miss) the 8 o'clock train I ___will be_____ (be) late for work.

e. If/When people _____dont eat____ (not eat) they ___will get______ (get) hungry.

f. If/When I __am____ (be) late for work my boss ____will get__ (get) angry.

g. When you ___fly__ (fly) budget airline you __will have to___ (have to) pay for your drinks and snacks.

h. When you ____go ___ (go) on holiday, ______will take_ (take) plenty of sun cream. It'll be very hot.

*Rewrite these sentences:

6. Today is an awful day. So we can't go to the beach.

-->If........today wasn't an awful day, we could go to the beach........

7. When you press this button, this machine will start.

-->If......you press this button, this machine will start..........

1. Unless you study harder, you will fail the test. 

If you don't study harder, you will fail the test.

2. Unless they return our money by the end of this week, we will go to their office.

If they don't return our money by the end of this week, we will go to their office.

3. He will be mad for at least a week unless she apologizes right away.

If she doesn't apologize right away, he will be mad for at least a week.

4. Unless he completes this task, he will have to go home late.  

If he doesn't complete this task, he will have to go home late.

5. They won’t respect you unless you respect them. 

If you don't respect them, they won't respect you.

6. If you don’t study harder, you‘ll fail the test

➡ Unless you study harder, you'll fail the test.

7. If she doesn’t practice writing every day, she can’t improve her writing skills.

➡ Unless she practices writing every day, she can't improve her writing skills.

8. Unless this man is a professional driver, he can’t help you move by car.

➡ If this man isn't a professional driver, he can't help you move by car.

9. Unless you stop smoking, you might fall ill.

➡ If you don't stop smoking, you might fall ill.

10. If Lan doesn’t return this book to the library today, she will have to pay a fine.

➡ Unless Lan returns this book to the library today, she will have to pay a fine.

1. Unless you study harder, you'll get bad marks.
2. If this man isn't a driver, he can't help you move by car.
3. Unless he practices writing every day, he can't improve his writing skill.
4. If the student doesn't go to school early, he will be punished.
5. If you don't try your best, you can't run fast.
6. Unless you leave me alone, I'll call the police.
7. Unless the weather is bad, we will go.

1. If you don't study harder, you will get bad grades.

=> Unless you get a bad grade, you won't study harder than ____________________________.

2. Unless this man is the driver, he can't help you get around by car.

=> If this man is the driver, then he won't help you get around by car.
_______________________________________.

3. If he doesn't practice writing every day, he can't improve his writing skills.

=> Unless he can't improve his writing skills, he doesn't practice writing every day____________________________________.

4. Unless the student goes to school early, he will be punished.

=> If he is punished, then the student must go to school early, _____________________________________________.
5. You can't run fast unless you try your best.

=> If you don't try your best, you can't run fast ___________________________________________________________________.

6. I'll call the police if you don't leave me alone.

=> Unless _you don't leave me alone then  I'll call the police
________________________________________________.

7. We won't go away if the weather is bad.
=> Unless _the weather is bad then we don't go away___

Rewrite sentences without changing the meaning of the sentence:

1. If you don't study harder, you'll get bad marks.

=> Unless ______________you study harder, you'll get bad marks.____________________________.

2. Unless this man is a driver, he can't help you move by car.

=> If ____this man is not a driver, he can't help you move by car.__________________________________________.

3. If he doesn't practice writing every day, he can't improve his writing skill.

=> Unless ___________he practices writing every day, he can't improve his writing skill._______________________________.

4. Unless the student goes to school early, he will be punished.

=> If _______the student does not go to school early, he will be punished._______________________________________.
5. You can't run fast unless you try your best.

=> If _________you don't try your best, you can't run fast_____________________________________.

6. I'll call the police if you don't leave me alone.

=> Unless ______you leave me alone, i'll call the police___________________________________.

7. We won't go away if the weather is bad.

=> Unless ___________ the weather is good, we won't go away .____________________

1. Unless you study harder, you'll get bad marks.
2. If this man isn't a driver, he can't help you move by car.
3. Unless he practices writing every day, he can't improve his writing skill.
4. If the student doesn't go to school early, he will be punished.
5. If you don't try your best, you can't run fast.
6. Unless you leave me alone, I'll call the police.
7. Unless the weather is bad, we will go.

 

6. What (happen)will happen if I press this button?

7. The door will be unlocked if you (press) press the green button.

8. I should have voted for her if I (have) had had a vote then.

9. If you go to Paris, where will you (stay) stay?

10. If you (swim) swim in this lake, you'll shiver from cold.

6. will happen

7. press

8. have

9. will you stay

10. swim

1.Peter is fat because he eats so many chips => 

If he didn't eat so many chips, he wouldn't be fat

2.If you are not careful,you will cut yourself with that knife =>

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

3.If you do not like this one,I'll bring you another =>

Unless you like this one, I'll bring you another.

4.I'll not be able to do any work if I do not have a quiet room =>

.Unless I have a quite room,I'll not be able to do any work.

5.If she does not hurry,she will be late =>

Unless she hurries, she’ll be late.

6.She doesn't have a bike so she has to walk to school =>

If she had a bicycle, she wouldn't have to walk to school

7.I am not rich businessman and I can't afford to buy an expensive car =>

 If I were a rich businessman, I could afford to buy an expensive car

 8.My parents don't allow me to go,so I have to stay at home =>

 If my parents allowed me to go, I wouldn't have to stay at home

9.She doesn't pay attention to her cooking so the food is horrile =>

If she paid attention to her cooking, the food wouldn't be horrible

10.They do not know each other very well so they do not talk to each other =>

 If they knew each other very well , they would not be reserved 

11.He is not a millionaire,so he can't give you all that you want => 

 If he were a millionaire , he could give you all that you want 

12.She loves him so she forgives him easily =>

 If she didn't love him, she wouldn't forgive him easily.

13.We get up late in the morning so we do not have time to have breakfast =>

If we got up late this morning, he wouldn't have time to have breakfast

14.If she does not hurry,she will be late for school => 

.Unless she hurries,you'll be late.

15.We can't go out because he has to study for his exam => 

 If he didn't have to study for his exam, he could go out

16.She is lazy so she can't pass the exam =>

 If she weren't lazy, she could pass the exam.

17.He will pay me tonight,I will have enough money to buy a car =>

 If he pays me tonight, I will have enough money to buy a car

18.He smokes too much;that why he can't get rid of his cough =>

 If he didn’t smoke too much, he could get rid of his cough.

19.She is very shy,so she doesn't enjoy the party =>

 If she weren’t very shy, she would enjoy the party.

20.He doesn't take any exercises.He is so unhealthy =>

 If he took some exercises, He would be healthy.

21.Study hard or you won't pass the exam =>

If you don’t study hard, you won’t pass the exam.

22.Don't be impatient or you will make mistakes =>

 If you are impatient, you will make mistakes.

23.If you want my advice,I wouldn't buy it => 

 If I were you, I wouldn't buy it.

24.I only come if they invite me =>

 Unless they invite me, I will not come.

25.He didn't revise all his lessons,he failed the exam =>

 If he had revised all his lessons, he wouldn't have failed the exam.

26.Leave me alone or I'll call the police =>

Unless you leave me alone, I'll call the police

1. Peter is fat because he eats so many chips

If he didn't eat so many chips, he wouldn't be fat

2.If you are not careful,you will cut yourself with that knife 

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

3.If you do not like this one,I'll bring you another 

Unless you like this one, I'll bring you another.

4.I'll not be able to do any work if I do not have a quiet room 

Unless I have a quite room,I'll not be able to do any work.

5.If she does not hurry,she will be late

Unless she hurries, she’ll be late.

6.She doesn't have a bike so she has to walk to school 

If she had a bicycle, she wouldn't have to walk to school

7.I am not rich businessman and I can't afford to buy an expensive car 

 If I were a rich businessman, I could afford to buy an expensive car

 8.My parents don't allow me to go,so I have to stay at home 

 If my parents allowed me to go, I wouldn't have to stay at home

9.She doesn't pay attention to her cooking so the food is horrile 

If she paid attention to her cooking, the food wouldn't be horrible

10.They do not know each other very well so they do not talk to each other 

 If they knew each other very well , they would not be reserved 

11.He is not a millionaire,so he can't give you all that you want 

 If he were a millionaire , he could give you all that you want 

12.She loves him so she forgives him easily 

 If she didn't love him, she wouldn't forgive him easily.

13.We get up late in the morning so we do not have time to have breakfast 

If we got up late this morning, he wouldn't have time to have breakfast

14.If she does not hurry,she will be late for school 

Unless she hurries,you'll be late.

15.We can't go out because he has to study for his exam 

 If he didn't have to study for his exam, he could go out