25.Hurry up or we’ll be late for the concert. =>If we don’t.......................................................................................................... 26.Study hard or you won’t pass the exam. =>If you............................................................................................................. 27.If it doesn’t rain, we will go camping. =>Unless it................................................................................................................ 28.Unless we protect the environment, our life will be badly affected. =>If................................................................................. 29.If someone doesn’t put the coal in, the fire will go out . => Unless........................................................................................... 30.Keep quiet or I’ll scream. =>Unless you............................................................................................................................. 31. Come here or else she will punish you. =>If you...................................................................................................................... 32.We spent 5 hours getting to London. => It took......................................... ................................ ................................................... 33.Ha Noi has got a lot of old buidings. =>There......................................... .......................................... 34.Let’s play chess. => I suggest........................................... .................. ........................................................... 35.How much do the black shoes cost? =>How................................. ..............................................................? 36.Nam plays tennis very well. => Nam is a ..................................... ....................................................... 37.Last year we took a plane to Ho Chi Ming city. => Last year we went .......................................... 39.Whose handbag is this? =>Who does................................... ................................. .........................................? 40.Unless we protect the environment, our life will be badly affected. => If ...........................................................

III. Rewrite the following sentences .(2.5ms)

1. You practise your English regularly or your English does not improve .

If ...........................................................................................................................

2. Water the plants regularly or they will die .

If you .....................................................................................................................

3.Only if you study hard , you will pass the test .

Unless .....................................................................................................................

4.Work harder , otherwise you will fail the exam .

You ......................................................................................................................

5.If we don't hurry, we will be late for the show.
Unless .....................................................................................................................

22. He doesn’t apply for the job because he doesn’t have enough qualifications.
→ If he ………………………………………………………………….
23. Hurry up, or we will be late for the exam.
→ If we …………………………………………………………………
24. They do not understand you because you do not often talk to them.
→ If you …………………………………………………………………
25. Because you speak English unnaturally, they do not understand you.
→ If you …………………………………………………………………

22. He doesn’t apply for the job because he doesn’t have enough qualifications.
→ If he ………………………………………………………………….
23. Hurry up, or we will be late for the exam.
→ If we …………………………………………………………………
24. They do not understand you because you do not often talk to them.
→ If you …………………………………………………………………
25. Because you speak English unnaturally, they do not understand you.
→ If you …………………………………………………………………

22. He doesn’t apply for the job because he doesn’t have enough qualifications.
→ If he ………………………………………………………………….
23. Hurry up, or we will be late for the exam.
→ If we …………………………………………………………………
24. They do not understand you because you do not often talk to them.
→ If you …………………………………………………………………
25. Because you speak English unnaturally, they do not understand you.
→ If you …………………………………………………………………

1. We don’t have enough money, so we can’t buy that house.

A. If we had enough money, we could buy that house. B. We could buy that house if we have enough money.

C. If we had had enough money, we could buy that house. D. We could have bought that house if we had had enough money.

2.Water these plant or they will die

A.Unless you water these plants ,they will die B.Unless you watered these plants ,they will die

C. Unless you water these plants ,they won’t die D. If you water these plants ,they will die

3. Hurry up or we’ll be late for the correct

A. If we don’t hurry , we won’t be late for the concert B.If we didn’t hurry , we will be late for the concert

C. If we don’t hurry, we will be late for the concert D.Unless we don’t hurry, we will be late for the concert

4..I can’t do this test because it is very difficult

A.If this test were difficult,I could do it B. If this test weren’t difficult ,I could do it

C.If this test weren’t difficult,I couldn’t do it D.Unless this test were difficult, I couldn’t do it

5. Study harder or you won’t pass the exam.

A. Only if you study harder, you will fail the exam. B. Unless you study harder, you will pass the exam.

C. If you don’t study harder, you will fail the exam.D. If you don’t pass the exam, you will have to study harder.

6. Take action soon or the pollution will get much worse.

A. If you don’t take action soon, the pollution will get much worse.

B. Unless you don’t take action soon, the pollution will get much worse.

C. The pollution will get much worse if you didn’t take action soon.

D. Only if you take action soon, the pollution will get much worse.

7. The fire will go out if we don’t put more wood on.

A. If we don’t put more wood on, the fire won’t go out. B. Unless we put more wood on, the fire will go out.

C. The fire will go out, so we don’t put more wood on. D. Unless we put more wood on, the fire won’t go out.

8. They spent a lot of money on food and clothes.

A. A lot of money was spent on food and clothes. B. A lot of money were spent on food and clothes.

C. A lot of money on food and clothes were spent. D. A lot of money on food and clothes was spent.

9. People have used the Internet all over the world.

A. The Internet has used all over the world. B. The Internet was used all over the world.

C. The Internet has been used all over the world. D. The Internet has been using all over the world.

10. Our house is going to be rebuilt by a local firm.

A. We are going to rebuild our house. B. We are going to have our house to rebuild.

C. A local firm are going to rebuild our house. D. A local firm is going to rebuild our house.

1. If he (study) ________________  harder, he can pass an exam.

2. She may be late if she (not hurry) ________________.

3.If you study harder, you (pass) ________________  the exam.

4.If people really cared about the environment, they ( not dump )_ waste into the lake.

5.If there was no fresh water in the world, what (happen) ________________.

6.If you (be)___________ the president, what would you do to help the environment ?

7.They get sick so often.If they exercised more, they (be) ____________ healthier.

8.If I (have) __________ one million US dollars, I would build more parks in our city.

9. Four countries ______________ (visit) by John so far.

10. London ______________ (have) a population of eight million people.

11. Vietnam’s Independence Day ________________ (celebrate) on September 09^th.

12. We ______________ (visit) Sydney Opera House for several times.

13. Some activities ______________ (prepare) to celebrate the lunar new year now.

14. When I came to the stadium, the match (start) _____________________

15. Before she (listen) _____________ to music, she (do)_____________ homework.

16. Last night, Peter (go)______ to the supermarket before he (go) __________ home.

17. Most students (leave) _____________ before the volcano (erupt) __________.

18. I (find) ____________ my pen after I (buy)_____________________ a new one.

19. Food and medical supplies (deliver)…………………….yesterday afternoon.

20. In the future, natural disasters (predict)… accurately with the help of  technology.

21.Three cats (rescue) ………………………….by the volunteers last Sunday.

22. Two houses (build) ………………………….in the city every years.

23. Earth (hold)………………………. by the gravity of the sun and orbits around it

giúp mik vs ặ

1. If he (study) ____studies_____________  harder, he can pass an exam.

2. She may be late if she (not hurry) __hurries______________.

3.If you study harder, you (pass) ________________  the exam.

4.If people really cared about the environment, they ( not dump ) __ ______________ waste into the lake.

5. If there was/ WERE no fresh water in the world, what (happen)

_________?

6.If you (be) _________ the president, what would you do to help the environment ?

7.They get sick so often.If they exercised more, they (be) _____________ heathier.

8.If I (have) ________ one million US dollars , I would build more parks in our city.

-> 3 LOAI:

Type 1: ở tương lai   :             If (HTĐ),       Will V/ can V/ May V/ …

TYPE 2: Trái với Hiện tại :    If (qkđ),          would V

Type 3: Trái với QK:             If ( Had PP),   would have PP

9. Four countries ____ __________ (visit) by John so far.

10. London ______________ (have) a population of eight million people.

11. Vietnam’s Independence Day __ ______________ (celebrate) on September 02^nd .

12. We _ _____________ (visit) Sydney Opera House for several times.

13. Some activities ________ (prepare) to celebrate the lunar new year now.

14. When I came to the stadium, the match (start) _ ___

15. Before she (listen) _ ________ to music, she (do)__ _____ homework.

16. Last night, Peter (go) _ ___________________ to the supermarket before he (go) _________ _________________ home.

17. Most students (leave) __ ____________________ before the volcano (erupt) ________ _______________.

18. I (find) _________________ my pen after I (buy)__________ a new one.

19. Food and medical supplies (deliver)…… ……….yesterday afternoon.

20. In the future, natural diasters (predict)… … …………………… accurately with the help of  technology.

21.Three cats (rescue) … ……………………….by the volunteers last Sunday.

22. Two houses (build) …… …………………….in the city every year.

23. The Earth (hold)… ………………………. by the gravity of the sun and orbits around it.

Be quiet or you will not understand the lesson.

→ If ……………………………………………………………….

Study harder and you will not fail the coming exam.

→ If ………………………………………………………………..

Work harder or you won’t get high salary.

→ If ………………………………………………………………..

Practice speaking English every day or you can’t improve your English.

→ If ………………………………………………………………………………………

Can’t you control the child?

→ You can’t …………………………………………………………………….?

Did they understand the problem?

→ They hardly ……………………………………………………………?

The children are excited about going to the circus.

→ The children are looking …………………………………………………...

Do you find it difficult to speak English?

→ Do you have any …………………………………………………………..?

The Browns last painted the living-room two years ago.

 →The Browns have not ………………………………………………………...

He has studied English for six years.

→ He began ………………………………………………………………………..