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1. Vietnamese children have to wear uniform when they go to school
2. last night my sister was ill. We __must____ call the doctor
3. I have bad toothache. I ___have to __ make an appointment with the dentist
4. I don't want to ___have to ___ wait in a queue for ages
5. She __must ____ work on Saturday morning
6. When you come to Califonia, you __must ___ come and see us soon
7. This is a terrible party. We __must ____ go home
8. If there are no taxis we'll _have to ____ walk
9. Daniel __have to _____ go to the bank. He hasn't any money
10. You really ____must____ hurry up, Vicky. We don't want to be late

Chọn must hoặc have/has to

1. Vietnamese children ___have to___ wear uniform when they go to school
2. Last night my sister was ill. We ___must___ call the doctor
3. I have bad toothache. I must make an appointment with the dentist
4. I don't want to ___have to___ wait in a queue for ages

5. She __has to____ work on Saturday morning
6.When you come to Califonia, you must come and see us soon
7. This is a terrible party. We have to go home
8. If there are no taxis we'll have to walk
9. Daniel has to go to the bank. He hasn't any money
10. You really must hurry up, Vicky. We don't want to be late

chọn must hoặc have/has to

1. Vietnamese children ___have to___ wear uniform when they go to school
2. last night my sister was ill. We ___must___ call the doctor
3. I have bad toothache. I ___must__ make an appointment with the dentist
4. I don't want to ___have to___ wait in a queue for ages
5. She ___has to___ work on Saturday morning
6. When you come to Califonia, you ___must__ come and see us soon
7. This is a terrible party. We ___have to___ go home
8. If there are no taxis we'll __have to___ walk
9. Daniel ___has to____ go to the bank. He hasn't any money
10. You really ____must____ hurry up, Vicky. We don't want to be late

II. Put the verbs in brackets into the correct form. (conditional sentences type 1, 2)

1. If we (recycle) __recycle___ more, we will help the Earth.

2. Factories (not dump) _won't dump____ waste into rivers if the government fines them heavily.

3. Students will be more aware of protecting environment if teachers __teach___ (teach) environmental issues at school.

4. If light pollution ___happens___ (happen), animals will change their behaviour patterns.

5. If people (travel) ___travel__ to work by bus, there will be fewer car fumes.

6. We ___will save__ (save) thousands of trees if we don’t waste paper.

7. If we use water carefully, more people _will have____ (have) fresh water.

8. The level of radioactive pollution will decrease if we __switch___ (switch) from nuclear power to renewable energy sources.

9. If the water temperature (increase) __increases___, some aquatic creatures will be unable to reproduce.

10. People will get more diseases if the water (be) ___is__ contaminated.

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

12. They get sick so often. If they (exercise) __exercised___ more, they (be) ___would be__ healtheir.

13. If I had one million US dollars, I (build) __would build___ more parks in our city.

14. Ngoc’s mother is unhappy. If Ngoc (tidy) __tidied___ her room everyday, her mother (not be) ___would not be__ so upset.

15. There isn’t a garden at our house. If there (be) __were___, we (grow) __would grow___ vegetables.

16. It (not be) ___won't be__ possible to save the Earth if we don’t take action now.

17. If the world temperatures continue to rise, there (be) __will be___ less snow.

18. If I (be) __were___ you, I would wear earplugs when going to the concert.

19. If we do nothing to stop global warming, we (see) __will see___ big changes in the future.

20. How __would___ you ___travel__ (travel) to work if you didn’t have this motorbike?

21. Our garden is so beautiful. There (not be) __wouldn't be___ any flowers if my sister (not take care) ___didn't take care__ it every day.

22. If pigs (have) __had___ wings, __would they be able___ (they/be able) to fly?

23. If I ___were__ (be) an astronaut, I ____would travel_ (travel) to other planets.

24. If you __didn't see___ (not see) Tom ever again, how ___would you feel__ (you/feel)?

25. What __would you do___ (you/do) if you __saw___ (see) a ghost?

26. If you __eat___ (eat) more of this cake, you __will be___ (be) sick. You’ve already had five slices!

27. Who __would you write___ (you/vote) for if you __were be___ (be) eighteen?

28. If you __were be___ (be) late, we ____didn't wait_ (not wait). We’ll have to go without you!

29. If the ozone layer is not protected, we ___will suffer__ (suffer) from excessive ultraviolet radioation.

30. If you ___leave__ (leave) the lights that you are not using on, you’ll cause over-illumination, a form of light pollution.

31. Soil pollution __will be___ a serious problem to solve if levels of pollutants in soil go beyond what should be naturally allowed.(be)

32. If your farming land __is___ near a landfill or an industrial area, it is essential that you test the soil for pollutants before growing anything adible. (be)

33. You will be less likely to suffer lung cancer if you ___don't smoke__. (not smoke)

34. If it is sunny, we _will do____ a clean-up of the garden. (do)

35. If local residents ___keep__ cutting trees for wood at this rate, the forest will soon be gone. (keep)

36. If we take good care of the garden, we _will have____ flowers all year round. (have)

37. If man __keep___ dumping waste into the sea, they will soon be victims. (keep)

38. We’ll go without Linh if she __doesn't come___. (not come)

39. If everyone __makes___ a small contribution, we’ll be able to do a good cause. (make)

#Yumi

Rewrite

1. I think you should use energy efficient light bulbs.

-If I were you, I would use energy efficient light bulbs

2. He produced a great idea for our environment project.

-He came up with a great idea for our environment project

3. Because she was adsent from the meeting, she didn't know the resolution.

-Because of being absent from the meeting, she didn't know the resolution

4. I won't take part in the volunteer program because I don't have enough free time.

-If I had enough time, I would take part in the volunteer program

5. We need to reduce our plastic waste, otherwise we'll threaten our own existence.

-If we don't reduce our plastic waste, we'll threaten our own existence

6. Due to the hurricane last night, I was without electric power.

-Since there was a hurricane last night, I was without electric power

7. People dumped toxic waste Products into the rivers or landfill sites.

-Toxic waste products were dumped into the rivers or landfill sites

8. Air pollution deaths will double by 2050 if the nations don't act.

Unless the nations act, air pollution deaths will double by 2050

9. As the world's temperature rise, the Arctic keeps losing its ice.

Due to the rise of world's temperature, the Arctic keeps losing its ice

10. I live by the sea, so I'm really worried about global warming.

If I didn't live by the sea, I wouldn't be worried about global warming

11. I won't help you if you don't try your best.

Unless you try your best, I won't help you

12. We'll come to the meeting if we aren't busy.

Unless we are busy, we'll come to the meeting

1.going;are having

2.have seen

3.argueing;are stealing

4.built;was

5.sat;saw

6.come;is having

7.did you do ;phoned

1) The light went out while we was having dinner.

2) The last time I saw him, he was wearing a green suit.

3) While the tow thieves were arguing, someone stole thier car.

4) They have been building a new bridge when I was there 2 months ago.

5) He have been sitting in a cafe when I saw him last Sunday.

6) When I came to visit her last night, she was having a bath.

7) What were you doing when I phoned you on Monday?

Tin mình đi

1 The light (go)went  out while we(have)were having dinner

2. The last time i(see)I saw him, he was wearing a grey suit

3. While the tow thieves(argue)were arguing, someone(steal) stoletheir car

4. They(build)builta new bridge when i(be) wasthere 2 months ago

5. He(sit)was sitting in a cafe when i (see) saw him last sunday

6. When i (come) come to visit her last night, she (have)was having a bath

7. What you (do)were you doing when i (phone)phoned you on monday ?

1 The light went out while we were having dinner

2. The last time i saw him, he was wearing a grey suit

3. while the tow thieves were arguing, someone stole their car

4. they were building a new bridge when i was there 2 months ago

5. he was sitting in a cafe when i saw him last sunday

6. when i came to visit her last night, she was having a bath

7. what were you doing when i phoned you on monday ?

1.went/ were having

2.saw

3. were argueing/ stole

4.were building/ was

5.was sitting/ saw

6.came/ was having

7.were you doing/ phoned

1 The light went out while we were having dinner

2. The last time i have seen him, he was wearing a grey suit

3. while the tow thieves were arguing, someone  stole their car

4. they built a new bridge when i was there 2 months ago

5. he was sitting in a cafe when i saw him last sunday

6. when i came to visit her last night, she was having a bath

7. what were you doing when i phoned you on monday ?

1. The light (go)...went... out while we(have)...were having .... dinner

2. The last time i(see).....saw.... him, he was wearing a grey suit

3. While the tow thieves(argue)....were arguing...., someone(steal)....stole..... their car

4. They(build)....were building....a new bridge when i(be)...was..... there 2 months ago

5. He(sit).....was sitting.... in a cafe when i (see)....saw.... him last sunday

6. When i (come)......came.... to visit her last night, she (have)...was having........a bath

7. What you (do).....were - doing ..... when i (phone)......phoned.... you on monday ?

Complete the sentence with must or have / has to . Sometimes both are possible.

1. Vietnamese children _____have to_____ wear uniform when they go to school.

2. Last night my sister was ill . We _____had to/ must_____ call the doctor.

3. I have bad toothache . I _____must_____ make an appointment with the dentist.

4. I don't want to _______have to_____ wait in a queue for ages.

5. She _______has to______ work on Saturday morning.

6. When you come to California, you ______must______ come and see us soon.

7. This is a terrible party . We ______must_____ go home.

8. If there are no taxis we'll _______have to_____ walk.

9. Daniel ______must_____ go to the bank . He hasn't any money.

10. You really ______must/ have to_____ hurry up , Vicky . We don't want to be late.

1. Vietnamese children ___have to _______ wear uniform when they go to school.

2. Last night my sister was ill . We __must ________ call the doctor.

3. I have bad toothache . I ____have to ______ make an appointment with the dentist.

4. I don't want to _______have to _____ wait in a queue for ages.

5. She ___has to __________ work on Saturday morning.

6. When you come to California, you ___have to _________ come and see us soon.

7. This is a terrible party . We ___must ________ go home.

8. If there are no taxis we'll ____have to ________ walk.

9. Daniel ____has to _______ go to the bank . Hehasn't any money.

10. You really _____have to ______ hurry up , Vicky . We don't want to be late.

Chúc bạn học tốt !!!

1. Vietnamese children have to wear uniform when they go to school.

2. Last night my sister was ill . We had to call the doctor.

3. I have bad toothache . I must make an appointment with the dentist.

4. I don't want to have to wait in a queue for ages.

5. She has to work on Saturday morning.

6. When you come to California, you must come and see us soon.

7. This is a terrible party . We must go home.

8. If there are no taxis we'll have to walk.

9. Daniel must go to the bank . Hehasn't any money.

10. You really have to hurry up , Vicky . We don't want to be late.

Complete the sentence with must or have / has to . Sometimes both are possible.

1. Vietnamese children _____have to_____ wear uniform when they go to school.

2. Last night my sister was ill . We _____had to/must_____ call the doctor.

3. I have bad toothache . I _____must_____ make an appointment with the dentist.

4. I don't want to _______have to_____ wait in a queue for ages.

5. She _______has to______ work on Saturday morning.

6. When you come to California, you ______must______ come and see us soon.

7. This is a terrible party . We ______must_____ go home.

8. If there are no taxis we'll _______have to_____ walk.

9. Daniel ______must_____ go to the bank . He hasn't any money.

10. You really ______must/ have to_____ hurry up , Vicky . We don't want to be late.