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1, David had gone before we arrive.
=> Before we arrive, David had gone.
2, We had lunch then we took a look around the shops
=> Before we took a look around the shops, we had lunch.
3,The light had gone out before we got out of the office
=> When we got out of the office, the light had gone.
4, After she had explained everything cleary, we started our work.
=> By the time she had explained everything cleary, we started our work.
5, My father had watered all the plants in the garden by the time my mother came home.
=> Before my mother came home, my father had watered all the plants in the garden.
1-BEFORE WE ARRIVED,DAVID HAD GONE
2-BEFORE WE TOOK A LOOK AROUND A SHOP,WE HAD LUNCH
3-WHEN WE GOT OUT OF THE OFFICE,THE LIGHT HAD GONE
4-BY THE TIME,SHE HAD EXPLAINED EVERYTHING CLEARLY,WE STARTED OUR WORK
5-BEFORE MY MOTHER CAME HHOME,MY FATHER HAD WATERED ALL THE PLANTS IN THE GARDEN.
Complete the following sentences:
1. After I had watched that horror film. I ......couldn't sleep at that night...........
2. She finished her homework after ....dinner....
3. When I came home , my sister ....has...... already ......sleeped......
4. Before he went out , ....he locked his door....
5. They had telephoned me before....they came to my house....
(Vì chi tiết mơ hồ quá nên mình làm vậy thôi nha) ◠‿◠
Before I came to class, I had a cup of coffee.
@ After i had a cup of coffee, I came to class
I have neven read such a good book before.
@ This is the first time I have ever read such a good book
She started learning English ten years ago.
@ She has learnt English for ten years
It is two years since he last went home.
@ He hasnot gone home for two years.
She began to play the piano three years ago
@ She has played the piano for three years
Before I came to class, I had a cup of coffee.
@ After i had a cup of coffee, I came to class
I have neven read such a good book before.
@ This is the first time I have read a good book
She started learning English ten years ago.
@ She had learnt English for ten years
It is two years since he last went home.
@ He hasnot went home for two years
She began to play the piano three years ago
@ She has been play the piano for three years
Chúc bn học tốt ! 
I. Rewrite the following sentences
1. He had hardly got into the bath when the telephone rang
=> Hardly had he got into the bath when the telephone rang
2. If I had met you before, we might have been friends
=> Had I met you before,we might have been friends
3. The doctor was so angry that one of the nurses dared to utter
=> So angry was the doctor that one of the nurses dared to utter
4. I can explain the matter in no other way
=> In no other way can I explain the matter
5. If you see Mary today, please ask her to call me
=> Should you see Mary today,please ask her to call me
6. If she were to see you, she would be very surprised
=> Were she to see you,she would be very surprised
7. John seldom forgets to do his homework
=> Seldom does John forget to do his homework
8. He grief was so great that she almost fainted
=> So great was her grief that she almost fainted
9. He got down to writing the letter as soon as he returned from his walk
=> No sooner had he returned from his walk than he got down to writing the letter.
10. She had hardly begun to speak before people started interrupting her
=> Hardly had she begun to speak before people started interrupting her
11. Some rang the alarm as soon as the burglars left the building
=> No sooner had the burglars left the building than some rang the alarm
12. I only realized what I had missed when they told me about it later
=> Only when They told me about it later did I realize what I had missed
13. The demand was so great that they had to reprint the book immediately
=> So great was the demand that they had to reprint the book immediately
14. The outcome of the election was never in doubt
=> At no time was the outcome of the election in doubt.
15. Tear gas was released as soon as the thieves touched the safe
=> No sooner had the thieves touched that safe than tear gas was released
16. The workers only called off the strike after a new pay offer
=> Only after a new pay offer did the workers call off the strike
17. I didn't realize who he was until later
=> Only later did I realize who he was.
18. I have never seen such a mess in my life
=> Never have I seen such a mess in my life
19. He never suspected that the money had been stolen
=> At no time did he suspect that the money had been stolen
20. The only way you can become a good athlete is by training hard every day
=> Only by training hard every day can you become a good athlete.
khoanh vào đáp án đúng
1. when her husband was in the army. Mary ........ to him twice a week
a, was b, wrote c. was written d. had written
2. 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
3. I have never player badminton before. This is the first time I .......... to play
a. try
b. tried
c. have tried
d. am trying
4. Since ............, I have heard nothing from him
a. he had left
b, be left
c. he has left
d. he was left
5. After I ........... lunch, I looked for my bag
a. had
b. had had
c. have has
d. have had
6. My the end of next year, George ............. English for two years
a, will have learned
b. will learn
c. has learned
d. would learn
7. the man got out of the car, ............. round to the back and opened the book
a. walking
b. walked
c. walks
d. walk
8. Henry ............. into the restaurant when the winter was having dinner
a. was going
b. went
c, has gone
d. did go
9. he will take the dog out for a walk as soon as he ............ dinner
a. finish
b. finishes
c. will finish
d. finishing
10. i will be glad if he ........... with us
a. had gone
b. did go
c. went
d. goes
11. Ask her to come and see me when she .............. her work
a. finish
b, has finished
c. finished
d. finishing
12. Turn off the gas. Don't you see that the kettle ...........?
a. boil
b. boils
c. is boiling
d. boiled
13. Tom and mary ............ for Vietnam tomorrow
a. leave
b. are leaving
c.leaving
d. are left
14. her brother ........... in Canada at present
a. working
b, works
c. is working
d. work
15. I ........... to the same barber since last year
a. am going
b. have been going
c. go
d. had gone
16. her father ........... when she was a small girl
a. dies
b. died
c. has died
d. had died
17. Last week, my professor promised that he ............... today
a. would come
b. will come
c. comes
d. coming
Câu trúc nhờ vả với have và get
S1 + have/has + S2 + V nguyên
S1 + have/has + something + V3
S1 + get(s) + S2 + to V
S1 + get + Something + V3
cam on ban 
neu co the duoc ban cho minh hoi chi tiet hon co duoc khong
1. David went home before we arrived
=> When he went home, we arrived.
=> After he had gone home, we arrived.
2. We had snack then we had a look around the shops
=> After we had had snack, we had a look around the shops.
3 . The light failed the moment they began work.
=> They had no sooner begun work than the light failed.
=> No sooner had the light failed than they began work.
=> Hardly had they begun work when the light failed.
4. We had never been so happy before
=> We were happier than everyday before.
5. I went to the zoo last year and that was where I saw a real tiger for the first time
=> Before I had seen a real tiger for the first time, I went to the zoo.
6. I like you didn't go to the party yesterday
=> I'd rather you hadn't gone to the party yesterday.
7. The man was poor so he could not afford accommodation
=>If the man hadn't been poor, he could have afford accommodation.
8. My teacher gave me a lot of homework
=> I wish my teacher hadn't gave me a lot of homework.
9. He didn't obey with his parents
=> I'd rather he had obeyed with his parents
10. She didn't take that job in the city because his home was very far from here
=> If his home hadn't been very far from here, she would have taken that job.
1) This is the first time he went abroad.
=> He hasn't gone abroad before
2) She started driving 1 month ago.
=> She has drived for 1 month
3) We began eating when it started to rain.
=> We have eaten since it started to rain.
4) I last had my hair cut when I left her.
=> I haven't had my hair cut since I left her.
5) The last time she kissed me was 5 months ago.
=> She hasn't kissed me for 5 months
6) It is a long time since we last met.
=> We haven't met since a long time .
7) When did you have it ?
=> How long have you had it ?
8) This is the first time I had such a delicious meal .
=> I haven't had such a delicious meal before
9) I haven't seen him for 8 days.
=> The last I saw him was 8 days ago
10) I haven't taken a bath since Monday.
=> It is
The robbers left/ had left the bank when the policemen finally arrived/ had arrived.
When the rain started/ had started, the Atkinsons finished/ had finished planting trees.
By the time Rebecca went/ had gone into the store, she got/ had got soaked.
Darcey saw/ had seen this castle before she came/ had come again last Sunday.
Mr.Palmer didn’t speak/ hadn’t spoken any Chinese before he moved/ had moved to Peking.
Sonny got / had got fainted by the time the ambulance reached/ had reached the hospital.
When my mother brought/ had brought me an apple, I finished/ had finished my homework.
Mrs.Wilkinson refused/ had refused to drive the car because she had/ had had a terrible accident on the highway about a year ago.
I didn’t think/ hadn’t thought of having a new house before I saw/ had seen that ad on TV.
My uncle didn’t try/ hadn’t tried Italian food before went/ had gone to that restaurant.
Có một mẹo đơn giản cho bạn làm dạng này đó là vế nào có by the time/before sẽ dùng thì quá khứ đơn, còn vế không có sẽ chọn quá khứ hoàn thành nhé