Cau dieu kien

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<b>Câu điều kiện</b>

<b>I.</b>

<b>Câu điều kiện loại 1</b>

Diễn tả sự việc, sự kiện có thể xảy ra ở hiện tại hoặc tương lai
* <i><b>Mệnh đề “If”</b></i> <b>:</b> hiện tại đơn

* <i><b>Mệnh đề chính</b></i> <b>:</b> + Hiện tại đơn
+ Tương lai đơn

+ Động từ khuyết thiếu : can, may, must, have to, has to, ought to, should
Eg :

1. If you (have) …………money, you (buy) ……….an English book.
2. They (phone) ………her if her mother (come)………..
3. They (help) ………him if they (have) ………time

4. If he (work) ……….here, he can (earn)………. much money.
5. If she (not/water)……….. these trees, they (die)………..

6. Please (phone)……… me if my old teacher (come)………
7. Lan (have to/do)……… the housework if she (be)……….free.

<b>II.</b>

<b>Câu điều kiện loại 2 </b>

Diễn tả sự việc, sự kiện không thể xảy ra ở hiện tại (ngược với thực tế ở hiện tại )

<i><b>Mệnh đề “If” :</b></i>

quá khứ bàng thái (V quá khứ/were)

<i><b>Mệnh đề chính</b></i>

: S + would/ could/ should/might + V
Eg :

1. If I (be)………you, I would(go) ……….on a picnic

2. If they( agree)………, they might ( let )………you know.

3. He could ( travel)……… to New York if he (have) ………..a passport.
4. If we ( have )……….enough money, we would (buy)……….. the house.
5. If I (know)………….. who you are, I wouldn’t (ask)…………. her your name.

<i><b>Exercises: Give the correct verb form:</b></i>

1. If I see him, I (give)……….. him a lift.
2. If he (eat)……….. all that he will be ill

3. Someone (steal) ……….your car if you leave it unlocked.
4. If he (wash) ……….my car I'll give him $10.

5. If she (need) ………..a radio she can borrow mine.
6. If you (not go)………. away I'll send for the police.

7. I'll be very angry if he (make) ……….any more mistakes.
8. If he (be)……… late we'll go without him.

9. If we leave the car here it (not be)………. in anybody's way.
10. He'll be late for the train if he (not start)………. at once.
11. If you come late they (not let)……… you in.

12. If he (go)………. on telling lies nobody will believe a word he says.
13. If he (work)……….. hard today can he have a holiday tomorrow?
14. If you (not like) ………this one I'll bring you another.

15. Unless you are more careful you (have)……… an accident.
16. What (happen)……….. if I press this button?

17. If you go to Paris where………. you (stay)………..?

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20. If the milkman (come)………, tell him to leave two bottles.
21. Someone (sit) ………..on your glasses if you leave them there.

22. We'll have a long way to walk if we (run) ………out of petrol here.
23. I'll probably get lost unless he (come) ……….with me.

24. You (not have)……….. so many accidents if you drove more slowly.
25. If she (leave)……….. the fish there the cat will get it.

26. If they (hang)……… that picture lower people would be able to see it.
27. She (be able)……… to walk faster if her shoes hadn't such high heels.
28. If he were in, he (answer) ………the phone.

29. If we keep our environment clean, we (live) ………. a happier and healthier life.
30. If Mrs. Hoa (write) ……….. a shopping list, she will not forget what to buy.

31. If he (be) ……… rich, he would travel around the world.
32. She (buy) ………. a new car if she had much money.
33. Mrs. Lan will join us if she (finish)………. her work early.

34. If we plant more trees along the streets, we (have) ……… more shade and fresh air.
35. If I (be) ………….. you, I wouldn’t do that.

36.He (go) ……… swimming if he had free time.

37. If the rice paddies are polluted, the rice plants (die) ………
37. If it ( rain)……….. this evening, I won’t go out.

39. If he had a car, he (drive) ………. it to work.

40. If Hoa (live) ………. in Hue, she would see her parents everyday.
41. If I meet him tomorrow, I (tell)………. him the truth.

42. If you (have) …………..enough time, please (paint) …………the chair before you leave.
43. I (give)……… you money if I had it.

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