Bài 1: 

1. If you eat too much junk food, you will not lose  weight.

2. If I do not make breakfast tomorrow morning, my girlfriend will not love me anymore.

3. If they do not hurry, they will not catch the train.

4. If we meet at 9:30, we will have plenty of time.

Bài 2:

1. A

2. A

3. C

4. B

Bài 3:

1. If you see Mike today, please ask him to phone me.

2. If you ask the teacher, he'll explain the lesson to you.

3. If I buy a new hat, i'll give it to you.

Bài 4:

1. If you help me, I will help you.

2. If they catch the bus, they will arrive on time. 

3. If my parents support me, I will be a better person.

4. If it rains, I will get wet

5. Sally and Elizabeth go out tonight if their parents will allow it.

6. They will visit Eiffel Tower if they go to France.

7. If I pass the year, my parents will be very disappointed

8. If I don't pass the year, my parents will be very disappointed

9. If the cable TV doesn't work, we will rent a DVD.

10. If the baby doesn't eat, we will see the doctor.

11. If the T-shirt suits me, I will buy it.

12. If you continue on a diet, you will get sick. 

13. If you are a good listener, you will have many friends.

14. If you don't be careful, you will spoil the machine.

15. If she doesn't be careful, she won't have enough money left.

16. If you get enought sleep, you will feel healthier.

17. My parents will give me a hug, if I arrive home early

18. If you don't be careful, you will fall.

19. If she eat that mayonnaise, she will be sick. 

20. If they don't behave, their parents will punish them.

21. She will go on a trip if she has got holidays in August.

22. I will get dehydrated if you don't drink more water.

23. If it is too much heat, I will turn off the air conditioning.

24. You will understand conditional sentences if you practise carefully.

Exercise4:

1. If you help me, I will help you.

2. If they catch the bus, they will arrive on time. 

3. If my parents support me, I will be a better person.

4. If it rains,  I will get wet.

5. Sally and Elizabeth go out tonight if their parents will allow it.

6. They will visit Eiffel Tower if they go to France.

7. If I pass the year, my parents will be very disappointed.

8. If I don't pass the year, my parents will be very disappointed.

9. If the cable TV doesn't work, we will rent a DVD.

10. If the baby doesn't eat, we will see the doctor.

11. If the T-shirt suits me, I will buy it.

12. If you continue on a diet, you will get sick. 

13. If you are a good listener, you will have many friends.

14. If you don't be careful, you will spoil the machine.

15. If she doesn't be careful, she won't have enough money left.

16. If you get enought sleep, you will feel healthier.

17. My parents will give me a hug, if I arrive home early.

18. If you don't be careful, you will fall.

19. If she eat that mayonnaise, she will be sick. 

20. If they don't behave, their parents will punish them.

21. She will go on a trip if she has got holidays in August.

22. I will get dehydrated if you don't drink more water.

23. If it is too much heat, I will turn off the air conditioning.

24. You will understand conditional sentences if you practise carefully.

exercise 1:

1. If you eat too much junk food, you will not lose  weight.

2. If I do not make breakfast tomorrow morning, my girlfriend will not love me anymore.

3. If they do not hurry, they will not catch the train.

4. If we meet at 9:30, we will have plenty of time.

exercise 3:

1. If you see Mike today, please ask him to phone me.

2. If you ask the teacher, he'll explain the lesson to you.

3. If I buy a new hat, i'll give it to you.

exercise 2:

1. A will reduce -> reduce.

 2. A Unless -> if.

3. C would be -> will be.

4. B will be -> is.

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