5. If we (not lend) didn’t lend him some money, he (die) would die early. 

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1.           I don’t have enough time. If I (have) enough time, I (go) to the park.

1.           I (get) ______________you a nice present if I __________ (know) that today is your birthday.  

Unless they turn the radio off, I (go) somewhere else

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1.           Today I’m so busy. If I (not be) busy today, I (visit) you.

Ex 4: Rewrite the following sentence in order to keep the meaning as the first one

1. I am busy with my homework, I can’t go to the cinema tonight.
–> If I…………………………………………………………………………….
2. It is cold, we don’t go swimming today.
–> We……………………………………………………………………………
3. If you want my advice, I wouldn’t buy it.
–> If I …………………………………………………………………………….
4. I only come if they invite me.
–> Unless………………………………………………………………………...
5. He doesn’t revise all his lessons. He fails the exam. (nối 2 câu dùng if)
–> If he……………………………………………………………………………
6. We will be late unless we hurry.
–> If………………………………………………………………………………
7. The park is over there, only 5 minutes’ walk.
–> If you walk……………………………………………………………………..

8. In case it rains, we’ll stay at home
–> If………………………………………………………………………………..

9. We must go or we’ll be late.

–> If ……………………………………………………………………………..

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

 –> Unless …………………………………………………………………………

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

–> If……………………………………………………………………………….

12. My grandparents live so far away, so I don’t visit them every week.
 –> If………………………………………………………………………………..

Ex 3: Give the correct form of the verb

0.     If flowers don’t get any water, they (die) _______________.

1.           I will go to the party unless it (rain) ________________.

2.           If I got up earlier, I (not be) ___________________late for work.

3.           If I didn’t feel so tired, I (go) ________________out with you.

4.           If you (not pass) ________________the exam, would you take it again?

5.           If I (be) ________________you, I would apply for the job.

6.           I could repair the car if I (have) ________________the right tools.

7.           Unless he (study) ________________hard, he’ll fail the exam.

8.           Today I’m so busy. If I (not be) ____________busy today, I (visit) ______________ you.

9.           What would happen if you (not have to) ________________go to work tomorrow?

10.      We’ll send for the doctor if he ____________________ (feel) worse.

11.      Unless they turn the radio off, I _________________(go) somewhere else.

12.      Unless it _______________ (be) a nice day, we won’t go out.

13.      The grass would look better if you ________________(take care) of it.

14.      If you leave the gate open, people _______________________(get in).

15.      If we leave before the breakfast, we _________________ (catch) the train.

16.      If Tom _________________(ring), tell him I will phone him.

17.      I (get)_______________you a nice present if I __________ (know) that today is your birthday.  

18.      If the weather (be) ________nice tomorrow, I (go) ___________for a walk.

19.      I don’t have enough time. If I (have) ______________enough time, I (go) ________________to the park.

Ex 2: Give the correct form of the verb (Conditional sentence type 2)

1. If today (be) __________Sunday, I (not have) ___________to go to school.

2. I (be) _________able to watch the football match if I (have) ________a TV.

3. If they (be) __________rich, they (help) ________________poor people.

4. What _______you (do) __________ if you (be) ________________him?

5. If we (not lend) _________him some money, he (die) ____________early.

6. He (not understand) __________the question if he (not ask) _________the teacher.

7. If I (win) __________a big prize in a lottery, I (give) _________up my job.

8. If I (be) __________you, I (tell) ___________________________the truth.

9. If I (have) ________________enough time now, I (write) ____________to my parents.

10. If I (know) ___________his address, I (go) __________round and see him.