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1.Kevin (go)........had gone......home by the time I arrived.
2.Ethan suddenly realized that he (leave).........had left.........his laptop on the train.
3.Mum was annoyed because I (not clean)......hadn't cleaned.......my room.
4..........Had.........they(study)......studied....English before they went to the USA?
5.We were hungry because we (not eat)...............hadn't eaten................
6.My phone didn't work because I (not charge).......hadn't charged..........it
7.Why didn't you want to watch the film? -.......Had...........you(see).....seen.....it before?
8.Sally was embarrassed because she )forget)......had forgotten...........her dad's birthday.
9.I(never/see)...........had never seen............such a beautiful beach before I went to Kauai.
10.I did not have any money because I (lose)....had lost......my wallet
11.Tony knew Istanbul so well because he (visit)............had visited..............the city several times.
12.We were not able to get a hotel room because we (book)....hadn't booked.......in advance.

hello hello Thảo Anh các bn sửa lại 1 số câu nhé
1. had started
2. had lived
3. had eaten
6. had finished
7. had been
10. had studied
Bn coi lại cách sử dụng thì QKHT nhé
1. when hoa arrived at the theater , the film ( start) started
2. he ( live) has lived in laos before he went to vietnam
3. after lan( eat) has eaten the cake, lan began to feel sick
4. If he ( listen) had listened to me, he would have got the job
5. linh didin't arrive until I ( leave) left
6. after thay ( finish) have finished lunch , they went out
7. the tree was dead because it ( be) was been arid all summer
8. I ( meet) have met him somewhere before
9. they were late for the flight because they ( forget) forgot their passports
10. linh told me she ( study) studied a lot before the exam
11. the leaf was yellow because it ( not/rain) didn't rain all summer
12. the lamp went off because I ( not/ pay) didn't pay the electricity bill

Exercise 3.the simple past or past perfect
1.What HAD you DONE (do) there before you RETURNED(return) home ?
2.When I CAME(come) to his house yesterday,his mother TOLD(tell) me that he HAD GONE(go) to the cinema with his friend 2 hours before.
3.He (go)WENT to England after he (study)HAD STUDIED English for 2 years.
4.Before they (go)WENT very far ,they (find)FOUND that they (lose)HAD LOST their way.
5.When their father (get)GOT home from work, they (tell) TOLD him that they HAD already (cook)COOKED the dinner.
6.By the time he (return)RETURNED home from England,they already HAD (build)BUILT a new house for him.7.When Peter (arrive)ARRIVED at the cinema, the film HAD already (start)STARTED .
8.The boy (say)SAID that he (do)HAD DONE all the homework before he (go)WENT to bed.
9.The children (begin)BEGAN to do the exercise after they HAD REWIED (review) all the rules.
10.He (make)MADE the report on the history of England after he HAD READ (read) a lots of books about ..
11.He thanked me for what I (do)HAD DONE for him.
12.We arrived here late .The train (leave)HAD LEFT.
13.The film (show)HAD SHOWN for 10 minutes when we came.
14.When I (discover)DISCOVERED that my camera (steal)HAD BEEN STOLEN, I called the police at once.
15.He kept looking at her,wondering where he HAD SEEN (see) her before.
16.I (put)HAD PUT the 5$ note in one of my books,but next day it TOOK (take) me ages to find it because I FORGOT(forget) which book I put it into.
17.I (not read)HADN'T READ a book as intersting as the book I read yesterday.
Exercise 3.the simple past or past perfect
1.What had you (done) there before you (returned) home ?
2.When I (came) to his house yesterday,his mother (told) me that he (had gone) to the cinema with his friend 2 hours before.
3.He (went) to England after he (had studied) English for 2 years.
4.Before they (had gone) very far ,they (found) that they (had loose) their way.
5.When their father (got) home from work, they ( told) him that they had already (cooked) the dinner.
6.By the time he (returned) home from England,they had already (built) a new house for him.
7.When Peter (arrived) at the cinema, the film had already (started).
8.The boy (said) that he (had done) all the homework before he (went) to bed.
9.The children (began) to do the exercise after they (had reviewed) all the rules.
10.He (made) the report on the history of England after he (had read) a lots of books about ..
11.He thanked me for what I (had done) for him.
12.We arrived here late .The train (had left).
13.The film (had shown) for 10 minutes when we came.
14.When I (discovered) that my camera (had been stolen), I called the police at once.
15.He kept looking at her,wondering where he (had seen) her before.
16.I (had put) the 5$ note in one of my books,but next day it (took) me ages to find it because I (forgot) which book I put it into.
17.I (had not read) a book as intersting as the book I read yesterday.

17. What did you do after you (leave)…HAD LEFT .the stadium?
18. Before I (come)..CAME..here yesterday, my mother (advise)...HAD ADVISED..me (not/cross)...NOT TO CROSS...the streets against the red lights.
19. We were very tired last night because we (play).HAD .PLAYED..football in the afternoon.
20. Linda wasn't at home then. If she (be)..HAD BEEN.. at home, I (visit)..WOULD HAVE VISITED.. her.
21. I (meet) ..HAD MET.. him twice before I (leave) ..LEFT.. for London.
22. When we (come)..CAME.. to the movies, the film HAD already (begin)..BEGUN..
23. After I (finish)..HAD FINISHED.. my breakfast, I (get)..GOT... ready to go to school.
24. If I (not/ be)..HADN'T BEEN... buzy, I would have come.
25. He (leave)..LEFT.. his office after he (read)..HAD READ.. the report.
26. He (go)..WENT.. to the railway station yesterday morning but the train (start)..HAD STARTED..
27. The manager HAD already (leave) ..LEFT... for the conference before we (get).GOT.. to the office.
28. If we (meet)..HAD MET.. Lan, she wouldn't have been unhappy.
29. I didn't meet Sleve because when I (arrive)..ARRIVED.., he (go) ..HAD GONE.. to school.
30. This room (paint)..HAD PAINTED.. since the last time I (be) ...WAS.. here.
31. If you had finished it yesterday, you (not/ have)..WOULDN'T HAVE HAD.. to come back.
32. Miss Snow (type)..HAD TYPED.. ten letters before lunchtime yesterday.
33. The train (start)..HAD STARTED... before we (arrive)..ARRIVED... at the station.
34. The film HAD already (begin).BEGUN... when we (get)..GOT.. to the cinema.
35. He said that he (see).HAD SEEN.. that man before.
36. Mr Brown (die)..DIED.. after he (be).HAD BEEN... ill for a long time.
37. By December 1st last year, he (work)...HAD WORKED... in the bank for 5 years.
38. He discovered to his horror that he (eat)...HAD EATEN.. a fly.
39. He (do)..HAD DONE.. nothing before he (see)..SAW.. me.
40. I realised that I (see)..HAD SEEN... that woman before.
17. What did you do after you (leave)…HAD LEFT.the stadium? 18. Before I (come)..CAME..here yesterday, my mother (advise)..HAD ADVISED...me (not/cross)..NOT TO CROSS....the streets against the red lights.
19. We were very tired last night because we (play)..PLAYED..football in the afternoon.
20. Linda wasn't at home then. If she (be)..HAD BEEN.. at home, I (visit)...WOULD HAVE VISITED. her.
21. I (meet) ..HAD MET.. him twice before I (leave) .LEFT... for London.
22. When we (come)..CAME.. to the movies, the film HAD already (begin)..BEGUN..
23. After I (finish). HAD FINISHED... my breakfast, I (get)....GOT. ready to go to school.
24. If I (not/ be)..HADN'T BEEN... buzy, I would have come.
25. He (leave)...LEFT. his office after he (read)...HAD READ. the report.
26. He (go)..WENT.. to the railway station yesterday morning but the train (start)..HAD STARTED..
27. The manager HAD already (leave) ...LEFT.. for the conference before we (get).GOT.. to the office.
28. If we (meet).HAD MET... Lan, she wouldn't have been unhappy.
29. I didn't meet Sleve because when I (arrive)..ARRIVED.., he (go) .HAD GONE.. to school.
30. This room (paint)...HAS BEEN PAINTED. since the last time I (be) ...WAS.. here.
31. If you had finished it yesterday, you (not/ have)...WOULDN'T HAVE HAD. to come back.
32. Miss Snow (type)..HAD TYPED. ten letters before lunchtime yesterday.
33. The train (start)...HAD STARTED.. before we (arrive)...ARRIVED.. at the station.
34. The film HAD already (begin).BEGUN... when we (get)...GOT. to the cinema.
35. He said that he (see).HAD SEEN.. that man before.
36. Mr Brown (die)..DIED.. after he (be)..HAD BEEN.. ill for a long time.
37. By December 1st last year, he (work)..HAD WORKED.... in the bank for 5 years.
38. He discovered to his horror that he (eat).HAD EATEN... a fly.
39. He (do)...HAD DONE. nothing before he (see)..SAW.. me.
40. I realised that I (see)..HAD SEEN... that woman before.

1. I didn't know that you were in hospital, so I didn't visit you.
If I had known tha you were in hospital, I would have visited you.
2. Hurry up or you will be late
If you don't hurry up, you will be late.
3. She is very busy, so she can't help me now
If she weren't very busy, she could help me now.
4. He didn't phone me because he didn't know my phone number
If he had known my phone number, he would have phoned me.
5. You're unfit because you don't take exercise
If you took (more) exercise, you would be fit/ wouldn’t be unfit.
6. Unless you are careful, you will cut yourself with that knife
If you are not careful, you’ll cut yourself with that knife
7. If i have time, I'll help you. => Unless. I have time, I won’t help you.
......
8. Dick often causes accidents because he drives carelessly
If he had studied his lessons very carefully, he wouldn’t get bad marks now.
9. I can't apply for that job because I don't know English
If Dick drove carefully, he wouldn’t cause accident (often)
10. He didn't study his lessons very carefully, so he gets bad marks now
If I knew English, I could apply for that job.
11. Susan is overweight because she eats too much chocolate
If Susan ate less chocolate, she wouldn’t be overweight
12. His father often punishesvhim for his laziness
If he weren’t lazy, his father wouldn’t punish him (often).
13. Study harder or you'll fail in the next exam
Unless you study harder, you'll fail in the next exam.
14. We did not visit the museum because we had no time
If we had had time, we would have visited the museum.
15. Without Jack's help, I wouldn't have been able to move the table
If Jack hadn't helped, I wouldn't have been able to move the table.
1. I didn't know that you were in hospital, so I didn't visit you.
If I had known tha you were in hospital, I would have visited you.
2. Hurry up or you will be late
If you don't hurry up, you will be late.
3. She is very busy, so she can't help me now
If she weren't very busy, she could help me now.
4. He didn't phone me because he didn't know my phone number
If he had known my phone number, he would have phoned me.
5. You're unfit because you don't take exercise
If you took (more) exercise, you would be fit/ wouldn’t be unfit.
6. Unless you are careful, you will cut yourself with that knife
If you are not careful, you’ll cut yourself with that knife
7. If i have time, I'll help you.
Unless. I have time, I won’t help you.
8. Dick often causes accidents because he drives carelessly
If he had studied his lessons very carefully, he wouldn’t get bad marks now.
9. I can't apply for that job because I don't know English
If Dick drove carefully, he wouldn’t cause accident (often)
10. He didn't study his lessons very carefully, so he gets bad marks now
If I knew English, I could apply for that job.
11. Susan is overweight because she eats too much chocolate
If Susan ate less chocolate, she wouldn’t be overweight
12. His father often punishesvhim for his laziness
If he weren’t lazy, his father wouldn’t punish him (often).
13. Study harder or you'll fail in the next exam
Unless you study harder, you'll fail in the next exam.
14. We did not visit the museum because we had no time
If we had had time, we would have visited the museum.
15. Without Jack's help, I wouldn't have been able to move the table
If Jack hadn't helped, I wouldn't have been able to move the table.

I. Make questions for the following sentences based on the underlined words.
1. She is unhappy because her grades in Maths are so bad.
Why is she unhappy?
2. My sister looked tired because she had too many exercises to do.
Why did your sister look tired?
3. We mustn't let the children play in the kichen because it is sometimes a dangerous place.
Why mustn't we let the children play in the kitchen?
4. She didn't feel well because she ate too much meat.
Why didn't she fell well?
5. I can't buy those books because I don't have enough money.
Why can't you buy those books?
6. They were wet because it rained heavily.
Why were they wet?
7. My sister stayed at home yesterday because she felt sick.
Why did your sister stay at home yesterday?
8. I did not travel by train because the weather was so bad.
Why didn't you travel by train?
9. The man had to leave the office immediately because he did not feel well.
Why did the man have to leave the office immediately?
10. They wear warm clothes because it is cold.
Why do they wear warm clothes?

1. We could do the test . It was very difficult (although)
=> Although the test was very difficult , we could do it
2.Tom couldn't go too school. He was ill ( so...that)
=> Tom was ill so that he couldn;t go to school
3.Solar anergy is cheap . It is also clean ( not only ... but also )
=> Solar energy is not only cheap but also clean
4. They arrived very late . They didn't see the beginning of the film (so...that)
=> They arrived very late so that they didn't see the beginning of the film
5.It was an expensive car . We couldn't afford to buy it(such)
=> It was such an expensive car that we couldn't afford to buy
6. There was few people at the meeting . It was cancelled(because)
=> The meeting was cancelled because there was few people at this
7.. We couldn't understand her because she spoke too fast (Therefore)
=> She spoke too fast,therefore we couldn;t understand her
8.I've meet too many people. I can't remember all their name (because)
=> I can't remember all their name because I've meet too many people
9. These exercise are very difficult . She can't do them (such...that)
=> These are such difficult exercise that she can't do them
10. It rained heavily . They went to school(despite)
=> Depite rainning heavily, they went to school
11. I can't go with you . I have a lot of work to do(Because of)
=> Because of having a lot of working, I can't go with you
1. We could do the test . It was very difficult (although)
Although the test was very difficult, we could do it
2.Tom couldn't go too school. He was ill ( so...that)
Tom was so ill that he couldn't go to school
3.Solar anergy is cheap . It is also clean ( not only ... but also )
Not only is solar energy cheap but it also clean
4. They arrived very late . They didn't see the beginning of the film (so...that)
They arrived so late that they didn't see the beginning of the film
5.It was an expensive car . We couldn't afford to buy it(such)
Such an expensive car ! We couldn't afford to buy it
6. There was few people at the meeting . It was cancelled(because)
It was cancelled because there was few people at the meeting
7.. We couldn't understand her because she spoke too fast (Therefore)
8.I've meet too many people. I can't remember all their name (because)
I can't remember all people name because I've met too many people
9. These exercise are very difficult . She can't do them (such...that)
It's such a difficult exercise that she can't do them
10. It rained heavily . They went to school(despite)
Despite heavy rain, they went to school
11. I can't go with you . I have a lot of work to do(Because of)
Because of doing a lot of work, I can't go with you

Ex1: (Conditionals,I wish,Past Subjunctive) Finish each of the following sentences in such a way that it means the same as the sentences printed before it
1,The only reason Jimmy often gets bad marks is because he is lazy
If Jimmy weren't lazy, he wouldn't often get bad marks.
2,We got lost because we didn't have a map
If we had had a map, we wouldn't have got lost.
3,We didn't go on holiday because we did not have enough money
If we had had enough money, we would have gone on holiday.
4,She didn't hurry,so she missed the train
If she had hurried, she wouldn't have missed the train.
5,I bought beef because I didn't know she couldn't eat it
If I had known she couldn't eat beef, I wouldn't have bought beef.
6,Providing that you leave a forwarding address,we will be able to contact you
Unless you leave a forwarding address, we will be able to contact you.
7,Unless you save some money,you will never be able to buy a car
Provided that you save some money, you will be able to buy a car.
8,The boys don't have any matches,so they can't light the fire
If the boys had some matches, they could light the fire.
Ex1: (Conditionals,I wish,Past Subjunctive) Finish each of the following sentences in such a way that it means the same as the sentences printed before it
1,The only reason Jimmy often gets bad marks is because he is lazy
If Jimmy.....weren't lazy , he wouldn't often get bad marks
2,We got lost because we didn't have a map
If we.....had a map , we wouldn't get lost
3,We didn't go on holiday because we did not have enough money
If we.had enough money , we would go on holiday ...
4,She didn't hurry,so she missed the train
If she.had hurried , she would have missed...
5,I bought beef because I didn't know she couldn't eat it
If I.... had known she couldn't eat beef, I wouldn't have bought beef.
6,Providing that you leave a forwarding address,we will be able to contact you
Unless you leave a forwarding address, we will be able to contact you
7,Unless you save some money,you will never be able to buy a car
Provided that.. you save some money, you will be able to buy a car...
8,The boys don't have any matches,so they can't light the fire
If the boys. had some matches, they could light the fire...
1. Kevin had gone home by the time I arrived.
2. Ethan suddenly realized that he had left his laptop on the train.
3. Mum was annoyed because I had not cleaned my room.
4. Had they studied English before they went to the USA?
5. We were hungry because we had not eaten.
6. My phone didn't work because I had not charged it.
7. Why didn't you want to watch the film? - Had you seen it before?
8. Sally was embarrassed because she had forgotten her dad's birthday.
9. I had never seen such a beautiful beach before I went to Kauai.
10. I did not have any money because I had lost my wallet.
11. Tony knew Istanbul so well because he had visited the city several times.
12. We were not able to get a hotel room because we had not booked in advance.