II. Use UNLESS instead of IF.

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

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

2. If you do not like this one, I’ll bring you another.

-> Unless you like this one, I’ll bring you another. 

3. I’ll not be able to do any work if I do not have a quiet room.

-> Unless I have a quiet room, I’ll not be able to do any work.

4. If she does not hurry, she’ll be late.

-> Unless she hurries, she’ll be late. 

5. If we had more rain, our crops would be better.

-> Unless we had more rain, our crops wouldn't be better. 

6. The crops would have been ruined if the flood had risen higher.

-> Unless the flood had risen higher, the crops wouldn't have been ruined.

7. If you had not sneezed, he wouldn’t have known that we were there.

-> Unless had sneezed, he wouldn’t have known that we were there. 

8. If she did her hair differently, she would look quite nice.

-> Unless she did her hair differently, she wouldn't look quite nice.

9. If John had played for our football team, we would not have lost the game. 

-> Unless John had played for our football team, we would have lost the game. 

10. If I won a big prize in a lottery, I’d give up my job.

-> Unless I won a big prize in a lottery, I wouldn't give up my job.

1 Unless you are careful, you will cut your self with that knife

2 Unless you like this one,  I’ll bring you another

3  I’ll not be able to do any work unless I have a quiet room

4 Unless she hurries, she’ll be late

5 Unless we had more rain, our crops wouldn't be better

6 The crops wouldn't have been ruined unless the flood had risen higher

7  Unless you had not sneezed, he wouldn’t have known that we were there

8 Unless she did her hair differently, she wouldn't look quite nice

9  Unless John had played for our football team, we would have lost the game.

10 Unless I won a big prize in a lottery, I’d not give up my job.

III. Use UNLESS instead of IF :

1.      Unless she hurries, she’ll be late.

2.      Unless you like this one, I will bring you another. ………………………………………………

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

4.      I’ll be able to do any work unless I don't now have a quiet room.

IV. Combine each pairs of these sentences, using IF :

Type 1 :

1.     If we recycle, we’ll save natural resources. ………………………………………………………..

2.    If you aren't careful careful or you will fall over the rocks. ………………………………………………………..

3.      If you work too much, you will feel tired. ………………………………………………………

4.      If you are careless, you’ll break the vase. ……………………………………………………….

5.      Ha can pass the exam if she works hard.………………………………………………………

6.      He can do a part to save the environment if he buys recycled products.

7.      if we put garbage into the bins, we will minimize pollution.

8.      If We don't take the map with us, we will lose our way on the street.

9.      Ellen can borrow it if she gives it back next week.

10.If The authorities are thinking of raising the petrol prices,I will have to cycle to work.

Use UNLESS INSTEAD of IF:

1. if you are not careful, you will cut yourself with that knife.

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

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

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

3. She'll be late if she does not hurry.

-Unless she hurries, she will be late.

4. If you don't sneeze, he won't know that we are there.

-]Unless you sneeze, he won't know that we are there.

5. Turn down the gas or the rice will burn.

-Unless you turn down the gas, the rice will burn.

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

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

2. If you do not like this one, I’ll bring you another.   

-> Unless you like this one, I’ll bring you another.   

3. I’ll not be able to do any work if I do not have a quiet room.         

-> I’ll not be able to do any work unless I have a quiet room.

I. Use UNLESS instead of IF:

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

- Unless...........you're careful,you will cut yourself with that knife........

2. If you do not like this one, i'll bring you another

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

3. She'll be late if she does not hurry.

- Unless.........she hurries,she'll be late.........

4. If you doesn't sneeze, he won't know that we are there.

- Unless........you sneeze, he won't know that we are there..........

5. If she does her hair diffrently, she will look quite nice.

- Unless........she does her hair differently she will look quite nice........

II. Make conditional sentences according to the fact provided (type1)

1. Keep silent or you wake the baby

- ............................if you don't keep silent, you will wake the baby up..................................

2. Go right now or you'll be late for the train.

-...............................unless you go right now, you'll be late for the train........................

3. Practice speaking English regularly or you will not pass this entrance exam.

-...........................unless you practice speaking english regularly, you won't pass this entrance exam ........................

a) unless you are careful, you will cut yourself with that knife

b) unless you this one, I'll bring you another

c) Unless she hurries, she will be late

d) I'll not be able to do any work unless I have a quiet room.

e) Unless she waters these trees, they will die.

f) He will stay here unless he wants to go.

Use UNLESS instead of IF

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

Unless............you like this one, I will bring you another..................................................

2. If she does not hurry, she'll be late.

Unless.............she hurries, she will be late........................................

3. If you are not careful, you'll cut yourself.

Unless...........you are careful, you will cut yourself...............................................

4. If you had not sneezed, he wouldn't have known that we were there.

Unless........you had sneezed, he wouldn't have known we were there

.....................................................

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

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

2. If she does not hurry, she'll be late.

Unless..she hurries, she'll be late...................................................

3. If you are not careful, you'll cut yourself.

Unless you are careful ,you'll cut yourself..........................................................

4. If you had not sneezed, he wouldn't have known that we were there.

unless you had sneezed, he wouldn't have known tha we were there

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

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

2. If she does not hurry, she'll be late.

Unless she hurries, she'll be late....................................

3. If you are not careful, you'll cut yourself.

Unless you are careful, you'll cut yourself...........................................................

4. If you had not sneezed, he wouldn't have known that we were there.

Unless you had sneezed, he wouldn't have known that we were there..............................................................

Choose the sentence that has the same meaning as the first.

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

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

B. If you are careful, you will cut yourself with that knife.

C. Unless you are not careful, you will cut yourself with that knife.

D. Unless you were careful, you will cut yourself with that knife.

25. Because he doesn’t leave immediately, I call a policeman.

A. Unless he leaves immediately, I won’t call a policeman.

B. If he leaves immediately, I won’t call a policeman.

C. Unless he leaves immediately, I will call a policeman.

D. If he left immediately, I wouldn’t call a policeman.

26. Today isn’t Sunday, so the pupils can’t go swimming.

A. If today is Sunday, the pupils could go swimming.

B. If today were Sunday, the pupils could go swimming.

C. The pupils could go swimming unless today is Sunday.

D. The pupils could not go swimming if today isn’t Sunday.

27. Stop talking or you won’t understand the lesson.

A. If you don’t stop talking, you won’t understand the lesson.

B. If you don’t stop talking, you wouldn’t understand the lesson.

C. If you hadn’t stopped talking, you wouldn’t understand the lesson.

D. If you hadn’t stopped talking, you wouldn’t have understood the lesson.

28. If the homework is difficult, I will ask you for help.

A. Unless the homework is easy, I won’t ask you for help.

B. Unless the homework is difficult, I will ask you for help.

C. Unless the homework is easy, I will ask you for help.

D. Unless the homework isn’t difficult, I won’t ask you for help.

29. I’ll let you borrow the book but you must promise to return it next week.

A. If you promise to return the book, I let you borrow it.

B. If you promised to return the book, I’ll let you borrow it.

C. If you promise to return the book next week, I’ll let you borrow it.

D. If you promise to return the book next week, I won’t let you borrow it.

a. Put the verb in brackets into the correct tense:

1.If I see him, I (give) ...........will give............................ him a gift.

2.If he (study) ...............studies..................... hard, he can pass the exam.

3.Rice plants (grow) ..........will grow...................... if there is enough rain.

4.If she (not hurry) .........does not hurry........................, she may be late.

5.If I tell you a secret, ..will............. you (promise) ......promise.................. not to tell it to anyone ?