rewrite the following sentences .

1 / study hard and you will pass the exam .

- if you study hard, you will pass the exam

2 , save some money or you won't able to buy the house .

- if you don't save some money, you won't able to buy the house.

3 , be good or your parents will be very unhappy .

- if you aren't good, your parents will be very unhappy

4 , do it carefully or you will feel sorry afterwards .

- if you don't do it carefully, you will feel sorry afterwards

5 , ask him first and he will offer to help .

- if you ask him first, he will offer to help

6 , be calm or you will make a wrong decision .

- if you aren't calm, you will make a wrong decision

7 , be careful or you will cut yourself with that knife .

- if you aren't careful, you will cut yourself with that knife

rewrite the following sentences .

1 / study hard and you will pass the exam .

- if you study hard, you will pass the exam..................

2 , save some money or you won't able to buy the house .

- if you save some money, you will be able to buy the house

3 , be good or your parents will be very unhappy .

- if you be good, your parents will be very happy

4 , do it carefully or you will feel sorry afterwards .

- if not do it carefully, you will feel sorry afterawards

5 , ask him first and he will offer to help .

- if you ask him first, he will offer to help

6 , be calm or you will make a wrong decision .

- if you not be calm, you will make a wrong decision

7 , be careful or you will cut yourself with that knife .

- if you not be careful, you will cutyourself with that knife

1 / study hard and you will pass the exam .

- if you study hard, you will pass the exam

2 , save some money or you won't able to buy the house .

- if you don't save some money, you won't able to buy the house.

3 , be good or your parents will be very unhappy .

- if you aren't good, your parents will be very unhappy

4 , do it carefully or you will feel sorry afterwards .

- if you don't do it carefully, you will feel sorry afterwards

5 , ask him first and he will offer to help .

- if you ask him first, he will offer to help

6 , be calm or you will make a wrong decision .

- if you aren't calm, you will make a wrong decision

7 , be careful or you will cut yourself with that knife .

- if you aren't careful, you will cut yourself with that knife

1. If you aren't good, your parents will be very unhappy

2. If you don't do it carefully, you'll feel sorry afterwards

3. If you study hard, you will pass the exam

4. If you aren't careful, you'll cut yourself with that knife

5. If you save some money, you will able to buy that house

6. If you ask him first, he will offer to help

7. If you aren't calm, you'll make a wrong decision

8. If you sing well, everyone will clap their hands

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.

1. If you (be not) ____are not__________ careful , you’ll cut yourself with that knife.
2. If you (want)________want______ to attend medical school , you must study hard.
3. If you (not stop )________don't stop______daydreaming, you won’t understand the lesson.
4. If you learn the lessons carelessly , you (get ) ______won't get_______ poor marks.
5. If you don’t do exercise regularly , you (not get fit ) ______will not get fit____________.

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.

1.practice speaking every day or you can't improve your english
=> If you don't practice speaking every day, you can't improve your english.
2.study harder or you'ii fail in the next exam
=> If you don't study harder, you'll fail in the next exam.
3.Unless you water these plants,they will die
the plants will die if you don't water them.
4.study hard or you'ii fail in the next exam
=> If you don't study hard, you'll fail in the next exam.
5. keep calm is the secret of passing your driving test
=> If you keep calm, you will pass your driving test.
6.you can borrow the car, but you've got to fill it up with petrol
=> If you fill the car up with petrol, you can borrow it.
7.keep silent or the teacher will punish you
=> unless you keep silent, the teacher will punish you.
8.CUT YOUR HAIR OR THEY WON'T LET YOU IN
=> If you don't CUT YOUR HAIR, THEY WON'T LET YOU IN.
9.study hard and you will pass the exam
=> If you study hard, you will pass the exam.
10.save some money or you won't able to buy the house
=> If you don't save some money, you won't able to buy the house.

11 be good or your parents will be very unhappy
=> If you are not good, your parents will be very unhappy.
12.do it carefully or you'll feel sorry afterwards
=> If you don't do it carefully, you'll feel sorry afterwards.
13.ask him first and he will offer to help
=> If you ask him first, he will offer to help.
14.be calm or you'll make a wrong decision
=> If you are not calm, you'll make a wrong decision.
15.be careful or you'll cut yourself with that knife
=> If you are not careful, you'll cut yourself with that knife.

16.i don't have a car, so i can't drive you to the airport
=> If i had a car, i could drive you to the airport.
17.nam is too yuong, so he can't take part in the project to be trained to become an astronaut
=> If Nam was not too yuong, he could take part in the project to be trained to become an astronaut.

18. he doesn't do any exercise, that's why he is so unhealthy
=> If he did some exercise, he wouldn't be so unhealthy.

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. 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 ?

 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.