BEFORE
-Diễn tả hành động xảy ra xong trước khi có hành động khác tới
QUÁ KHỨ
BEFORE + S + V (quá khứ đơn), S + V (quá khứ hoàn thành)
Eg: Before she went to bed, she had locked all the doors.
TƯƠNG LAI
BEFORE + S + V (hiện tại đơn), S + V (tương lai hoàn thành)
Eg: Hurry up or the film will have ended before we go to the movie.
UNTIL/
TILL
-Diễn tả nghĩa “cho tới khi”
S + V (tương lai đơn)/ V(bare)/DON’T + V(bare) + UNTIL/TILL +
S + V (hiện tại đơn/hiện tại hoàn thành)
Eg: I will wait for you until it is possible.
Wait here until I come back.
3.Phương pháp chuyển đồi từ thì quá khư đơn sang thì hiện tại hoàn thành.
1.S + Last +V2/ed + time +ago/in+ mốc thời gian./when + clause
=> S +have/has + not + V3/ed + for +khoảng thời gian.
+ since + mốc thời gian.
=>It’s + time + since + S +last +V2/ed
=>The last time + S + V2/ed +was+ time + ago
2.This is the first time + S + have/has + V3/ed
=>S + have/has + never + V3/ed + before
3.S started/began + Ving/to V +………………+khoảng thời gian +ago
+……………...In + mốc thời gian./when + clause
=>S + have/has + V3/ed
+for + khoảng thời gian
+since + mốc thời gian
4.When + did + S + started/begin + to V/Ving………..?
=>How long + have/has + S + V3/ed….?
II.THỰC HÀNH.
BÀI TẬP ÁP DỤNG SỰ HÒA HỢP THÌ
I.Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the
following questions.
1. When I last saw him, he _____ in London.
A. has lived
B. is living
C. was living
D. has been living
2. We _______ Dorothy since last Saturday.
A. don’t see
B. haven’t seen
C. didn’t see
D. hadn’t seen
3. The train ______ half an hour ago.
A. has been leaving B. left
C. has left
D. had left
4. My sister ________ for you since yesterday.
A. is looking
B. was looking
C. has been looking
D. looked
5. Christopher Columbus _______ American more than 500 years ago.
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A. discovered
B. has discovered
C. had discovered
D. had been
discovering
6. He fell down when he ______ towards the church.
A. run
B. runs
C. was running
D. had run
7. I’ll come and see you before I _______ for the States.
A. leave
B. will leave
C. have left
D. shall leave
8. John ______ a book when I saw him.
A. is reading
B. read
C. was reading
D. reading
9. Her brother ______ in Canada at present.
A. working
B. works
C. is working
D. work
10. I ______ to the same barber since last year.
A. am going
B. have been going
C. go
D. had gone
11. Her father ______ when she was a small girl.
A. dies
B. died
C. has died
D. had died
12. Almost everyone _______ for home by the time we arrived.
A. leave
B. left
C. leaves
D. had left
13. I couldn’t cut the grass because the lawn mower ______ a few days previously.
A. broke down
B. has been broken
C. had broken down
D. breaks down
14. Since _______, I have heard nothing from him.
A. he had left
B. he left
C. he has left
D. he was left
15. After I _______ lunch, I looked for my bag.
A. had
B. had had
C. have has
D. have had
16. By the end of next year, George _______ English for two years.
A. will have learned B. will learn
C. has learned
D. would learn
17. Henry _______ into the restaurant when the writer was having dinner.
A. was going
B. went
C. has gone
D. did go
18. He will take the dog out for a walk as soon as he ______ dinner.
A. finish
B. finishes
C. will finish
D. finishing
19. I _________from him since he __________two years ago.
A. hadn't heard; disappeared
B. haven't heard; disappeared
C. didn't hear; has disappeared
D. will not hear; disappears
20. After the guests _________, she _________back into the living-room and _________off the light.
A. left; went; turned
B. had left; had gone; turned
C. have leftt; will got; turned
D. had left; went; turned
21. By the time you finish cooking they __________their homework.
A. will have finished
B. will finish
C. had finished
D. have finished
22. I will tell John about it ______.
A. when I will see him this afternoon.
B. when I see him this afternoon.
C. when I saw him this afternoon.
D. after I had seen him this afternoon.
23. I have heard nothing from him since he _____school.
A. had left
B. left
C. has left
D. leaves
24. He fell down while he _______ towards the church.
A. run
B. runs
C. was running
D. had run
25. Bill’s mother won’t let him go out with his friends ______.
A. when he finished his homework
B. after he had finished his homework
C. once he finished his homework
D. until he has finished his homework
26. Her academic performance has greatly improved since she her study ______ methods.
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A. will change
B. changed
C. was changing
D. would change
27. You may not see how important your family is ____________.
A. after you had lived far from home
B. when you were living far from home
C. until you live far from home
D. as soon as you lived far from home
28. The city has changed a lot since I last _________________ it.
A. visited
B. would visit
C. will visit
D. visit
29. He will take the dog out for a walk __________.
A. as soon as he finished dinner
B. as soon as he will finish
C. as soon as he has finished
D. as soon as he was finishing
30. Ask her to come and see me ________.
A. when she finished her work
B. when she has finished her work
C. after she had finished her work
D. as soon as she was finishing her work.
31. My mother usually ___________the cooking every day.
A. do
B. does
C. is doing
D. to do
32. In my family, everybody ___________the household chores.
A. sharing
B. to share
C. shares
D. share
33. She ___________her homework at the moment.
A. is doing
B. to do
C. does
D. do
34. She often ________________a big breakfast but today she________________only a glass of milk.
A. has/ is having
B. was having/ had
C. had/has
D. had had/ is having
35. The baby ________________Don’t make so much noise.
A. sleep
B. sleeps
C. is sleeping
D. slept
36. I have not read a newspaper since Sunday.
A. I never read a newspaper on Sunday.
B. The last time I read a newspaper was on Sunday.
C. I only read a newspaper on Sunday.
D. It is Sunday on which I read a newspaper.
37. John________________tennis once or twice a week.
A. usually play
B. is usually playing
C. usually plays
D. have usually played
38. He left school three years ago.
A. It is three years since he had left school.
B. It is three years since he left school.
C. It is three years since he has left school.
D. It has been three years ago since he left
school.
39. She________________German for two years.
A. has learnt
B. is learning
C. learn
D. learns
40. Tina________________for London two years ago, and I________________from her since then.
A. left / have not heard
B. is leaving / had not heard
C. is going to leave / do not hear
D. leave / are not hearing.
41. She has learnt English and French___________________ the age of five.
A. since
B. for
C. before
D. in
42. ________________you go to the dentist?
A. How often are
B. How often do
C. How often does
D. How are
43. She usually______________ skirt. But today she _______________trousers.
A. has worn/wears B. wears/is wearing
C. wears/was wearing D. wore/ has worn
44. I’m busy at the moment __________________on the computer.
A. I work
B. I’m worked
C. I’m working
D. I worked
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45. A cold wind__________________for the last three days.
A. has been blowing
B. blows
C. is blowing
D. blew
46. For years, scientists in many countries_____________ a lot of research to find a vaccine against
AIDS.
A. are doing
B. will do
C. did
D. have done
47. I don’t know where he is. He hasn’t arrived_______________________.
A. already
B. still
C. since
D. yet
48. How long____________ here? – Exactly 4 years today. I’m thinking of changing my job next
year.
A. are you working B. have you been working
C. did you work
D. do you work
49. I _______________ in this school for ten years.
A. has been studying
B. have been studying
C. studied
D. were studying
50. I’m afraid I’m not hungry now. I’ve___________________.eaten lunch.
A. yet
B. still
C. already
D. ever
II.Rewrite each of the following sentences with the given words in such a way that it means the
same as the sentence printed above it.
1. This is the first time he went abroad.
=> He hasn't……………………………………………………………………………………………………
2. She started driving 1 month ago.
=> She has………………………………………………………………………………………………………
3. We began eating when it started to rain.
=> We have…………………………………………………………………………………………………..…
4. I last had my hair cut when I left her.
=> I haven't………………………………………………………………………………………………..……
5. It is a long time since we last met.
=> We haven't………………………………………………………………………………………………….
6. When did you have it ?
=> How long ………………………………………….………...……………………………………………?
7. This is the first time I had such a delicious meal .
=> I haven't……………………………………………………………………………………………………..
8. I haven't seen him for 8 days.
=> The last……………………………………………………………………………………………………...
9. I haven't taken a bath since Monday.
=> It is…………………………………………………………………………………………....……………..
10. Samuel started keeping a diary in 1997
=>Samuel has…………………………………………………………………………………………………..
11. We started learning English fìve years ago.
=>We have ……………………………………………………………………………………………………..
12. I began living in Ho Chi Minh City when I was 8.
=>I have………………………………………………………………………………………………………...
13. She has taught the children in this remote village for five months
=>She started ………………………………………………………………………………………………….
14. He has written to me since April.
=>The last time………………………………………………………………………………………………...
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15. She hasn’t had a swim for five years
=>She last ……………………………………………………………………………………………………...
16. They last talked to each other two months ag
=>They haven’t ………………………………………………………………………………………………..
17. The last time she saw her elder sister was in 1999
=>She hasn’t ………………………………………………………………………...…………………………
18. She hasn’t written to me for years
=>It’s years……………………………………………………………………………………………………..
19. Robert and Catherine have been married for ten years
=>It’s ten years ………………………………………………………………………………………………...
20. We have not jogged since August.
=>The…………………………………………………………………………………………………...………
ĐÁP ÁN
1. He hasn’t never gone abroad before.
2. She has driven for 1 month.
3. We have eaten since it started raining.
4. I haven’t cut my hair since I left her.
5. We haven’t met (each other) for a long time.
6. How long have you had it?
7. I haven’t never eaten such a delicious meal before.
8. The last time I saw him was 8 days.
9. It is …. days since I last took a bath.
10. Samuel has kept a diary since 1997.
11. We have learned English for five years
12. I have lived in Ho Chi Minh City since I was 8.
13. She started to teach the children in this remote village five months ago.
14. The last time he wrote to me was in April.
15. She last had a swim was five years ago
16. They haven’t talked to each other for two months.
17. She hasn’t seen her elder sister since 1999
18. It’s years since she wrote to me.
19. It’s ten years since Robert and Catherine were married.
20. The last time we jogged was in August.
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