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1, mom and dad .....weren't ......( not be ) at home yesterday. they...were..... ( be) at the hospital
2, the weather.....was ...( be ) nice. it...wasn't.....( not be ) windy and rainy
3, .....Was...... (be) he free all day yesterday?
4, when...were .....(be) you born
5, he ....wasn't....(not be) at school. he was at home
6, were you busy yesterday? yes, i....was.....
7, ......was.....it cold last night? no, it....wasn't......
8, where....were.... they on sunday? they....were....at the store
9, .....were..... Nina and Sam strong this morning? no,they...weren't.....
10, ......was....... Sam ill last night? yes,he....was.....
Ex 2 . Change these sentences into negative and interrogative form
1, she was tired last night =>..........she was't tired last night..............
2, i was in London last month => .....i wasn't in London last month......
3, they were at Nina's house yesterday =>............they weren't at Nina's house yesterday ..........
4, she was with him yesterday =>...............she wasn't with him yesterday...........................
5, tom was at school last monday =>..............tom wasn't at school last monday...........................
HỌC TỐT 
Ex 1 . write the correct past simple tense of tobe
1, mom and dad ......weren't.....( not be ) at home yesterday. they....were.... ( be) at the hospital
2, the weather...is.....( be ) nice. it....isn't....( not be ) windy and rainy
3, .....Was.... (be) he free all day yesterday?
4, when....was....(be) you born
5, he ...wasn't.....(not be) at school. he was at home
6, were you busy yesterday? yes, i.....was.....
7, .......was...it cold last night? no, it...wasn't.......
8, where.....are... they on sunday? they....are....at the store
9, ...are....... Nina and Sam strong this morning? no,they.....aren't...
10, ......Did....... Sam ill last night? yes,....she did.....
Ex 2 . Change these sentences into negative and interrogative form
1, she was tired last night =>........She wasn't tired last night.......................................
=> Was she tired last night?
2, i was in London last month => ............I wasn't in London last month..........................
=> Were you in London last month?
3, they were at Nina's house yesterday =>.............They weren't at Nina's house yesterday.....................................
=> Were they at Nina's house last night?
4, she was with him yesterday =>...........She wasn't with him yesterday...............................
=> Was she with him yesterday ?
5, tom was at school last monday =>..............Tom wasn't at school last Monday..........................
=> Was Tom at school last Monday ?
Viet lai cau giu Nguyen y nghia
1. David went home before we arrived
=> When we arrived , he had gone home.
=> After he had gone home, we arrived.
2. We had snack then we had a look around the shops
=> After having a snack , we had a look ảound 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 afforded accommodation.
8. My teacher gave me a lot of homework
=> I wish my teacher hadn't given 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 wouldn't have taken that job in the city.
Viết lại câu giữ nguyên nghĩa :
1. My father started to give up smoking last year.
=> My father has given up smoking since last year
2. The last time they spoke to her was when they were at her party.
=> They haven't spoken to her since they were at her party.
3. It is nearly twenty years since I last saw my uncle.
=> I haven't seen my uncle for nearly twenty years
4. This is the first time I have eaten such a delicious cake.
=> I have not eaten such a delicious cake before
5. I am sorry that I am busy today so I can't go with you.
=> I wish I wasn't busy today so that I could go with you
6. What a pity! Dung must work on Saturday
=> I wish Duong hadn't to work on Saturday
7. There is much air pollution in her area.
=> She wishes there wasn't much air pollution in her area.
8. He can not swim because it is in the winter.
=> He wishes it wasn't in the winter so that he could swim
9. We speak English badly.
=> We wish we spoke E well
III/ rewrite using present perfect tense
1. She began to learn English 3 years ago
-> she has learnt English for 3 years
2. They started playing tennis when they were 6
-> they have played tennis since they were 6
3. He began to work for this company in 2002
-> my brother has worked for this company since 2002
4. He started collecting stamps 4 months ago
-> he has collected stamps for 4 months
5. The last time i saw him was 2 weeks ago
-> i haven't seen him for 2 weeks
6. The last time he visited Hue was 4 years ago
-> he hasn't visited Hue for 4 years
7. We last ate in that restaurant in January
-> we haven't eaten in that restaurant since January
8. She last came here 3 months ago
-> she hasn't come here for 3 months
9. It is a long time since i last wrote to her
-> i haven't written to her for a long time
10. It is many years since we last met out uncle
-> we haven't met our uncle for many years
11. She last wore this dress at her 14th birthday
-> she hasn't worn this dress since her 14th birthday
12. Alex began to learn Vietnamese last months
-> alex has learnt Vietnamese since last month
13. She last wrote to me 5 months ago
-> she hasn't written to me for 5 months
14. It is over 10 years since we visited Paris
-> we haven't visited Paris for over 10 years
15. The last time i went finishing was in 2004
-> i haven't gone finishing since 2004
1. The novel was so interesting that i have read it many times
-> It was such an interseting novel that I have read it many times.
2. People say Mr Micawber is a picture of Dicken's father
-> Mr Micawber is said to be a picture of Dicken's father.
3. We felt tired because of the hot weather
-> The hot weather made us feel tired.
4. The girl is so nice that everybody likes her
-> She is too nice for everybody to like.
5. They said that Nam was a clever student
-> Nam was said to be a clever student.
6. The boy was so unhappy that he ran away to London
-> He was too unhappy to run away to London.
7. The thought that Miss Nga passed the exam
-> Miss Nga was thought to have passed the exam.
8. The children laughed a lot because of the clowns
-> The clowns made the children laugh.
9. The package was too heavy for Nam to carry
-> The package was so heavy that Nam couldn't carry it.
10. The buses don't stop .They are full
-> Since the buses are full, they don't stop.
11. Nga can't cook as well as her mother
-> Nga's mother can cook better than she does.
12. He didn't see you yesterday. He might not speak to you
-> If he saw you yesterday, he would speak to you.
13. They are not at home today . They don't meet their aunt
-> If they are at home today, they would meet their aunt.
14. People say that the weather is very fine there
-> The weather is said to be very fine there.
15. We got lost because we didn't have a map
-> If we had had a map, we wouldn't get lost.
16. When did you start learning French ?
-> How long have you learnt French ?
17. She hates people looking at her
-> She hates being looked.
Viết lại câu sao cho nghĩa không đổi:
1. my grandfather bought this clock last year.
-> This clock was bought by my grandfather last year.
2. She started learning English 10 years ago.
-> She has learnt English for 10 years.
3. People have used the Internet all over the world.
-> The Internet was used all over the world.
4. I often go to bed late.
-> I am used to going to bed late.
5. She must finish this work right now.
-> She wishes she finished that work right then.
6. They said to him " We are going there now."
-> They told him to go there then.
7. I asked Mary " When will you learn to play the piano ?"
-> I asked Mary when she would learn to play the piano.
8. " We must finish our homework tonight", the girls said.
-> The girls said (that) they must finish their work that night.
9. " Do you like English, Nam?" asked Mai.
-> Mai asked Nam if he liked English.
10. I was very delighted that I passed the final exams.
-> I was very delighted to pass my final exam.
11. Susan received a lot of birthday presents. She was happy.
-> She was happy to receive a lot of birthday presents.
12. It was confident of her to say that she would win the first prize.
-> She was confident to say that she would win the first prize.
Sai bn bỏ qua nhá 
I/ rewrite the sentences without changing the meaning
1. Nobody has seen him for years
-> he hasn't been seen four years.
2. Their trip lasted three days
-> they had a three-day trip.
3. My uncle raised a lot of chickens and ducks on the farm
-> a lot of chickens and ducks were raised on the farm by my uncle.
4. I am not the primary school anymore
-> i wish i weren't the primart school.
5. I read very fast
-> i am a fast reader.
6. He speak English very well
-> he is a good English speaker.
7. Ha noi is not as modern as KulaLumpur
-> we wish Ha noi were as modern as KualaLumpur.
8. We haven't seen her since 2006
-> the last time we saw her was in 2006
-> we last saw her since 2006
9. They started played volleyball in 2003
-> they have played volleyball since 2003.
10. They played football when they were 15
-> they have played football since they were 15
-> Football was played when they were 15.
11. They haven't told her that story yet
-> she hasn't been told that story yet.
12. The weather was warm. We can go swimming
-> the weather was so warm that we can go swimming.
13. He didn't watched football 5months ago
-> he hasn't watched football for 5 months.
14. People speak English all over the world.
-> english is spoken all over the world
I/ Rewrite the sentences without changing the meaning
1. Nobody has seen him for years
-> He hasn't been seen for years.
2. Their trip lasted three days
-> They had a - three - day trip.
3. My uncle raised a lot of chickens and ducks on the farm
-> A lot of chickens and ducks were raised on the farm by my uncle.
4. I am not the primary school anymore
-> I wish I were the primary school.
5. I read very fast
-> I am a very fast reader.
6. He speak English very well
-> He is a very good speaker.
7. Ha Noi is not as modern as KualaLumpur.
-> We wish Ha Noi were as modern as Kuala Lumpur.
8. We haven't seen her since 2006
-> The last time we saw her was in 2006.
-> We last saw her since 2006.
9. They started played volleyball in 2003
-> They have played volleyball since 2003.
10. They played football when they were 15
-> They have played footbal since they were 15.
-> Football was played when they were 15.
11. They haven't told her that story yet
-> She hasn't been told that story yet.
12. The weather was warm. We can go swimming
-> The weather was so warm that we can go swimming.
13. He didn't watch football 5months ago
-> He hasn't watched football for 5 months.
14. People speak English all over the world.
-> English is spoken all over the world.
1.In spite of a headache, he enjoyed the film(although)->....Although he had a headache,he enjoyed the film.................................................
2.Iam sorry but you have not been appointed to the post(regret)->...i regret to say you haven't been successful in your application........................................
3.It was difficult for me not to laugh at his joke.(help)->.....we couldn't help laughing at his joke......................
4.I went to see the film Titanic. I enjoyed it very much.(which)->..i went to see The film Titanic which i enjoyed very much..............................
5.George speaks Spanish. His wife is from Argentina.(whose).->.....George whose wife is from Argentina speaks Spanish................
6.Although both his legs were broken in the crash, he managed to get out of the car before it exploded(despite)->.....Despite of the fact that both his legs were broken in the crash ,he managed to get out of the car before it exploded.....
7.My parents insist that I study hard.(want)->..my parents want me to study hard..................................
8.It was 1998. I met her for the first time.(when)->............it was 1998 when I met her for the first time..................
9.Amy is very popular. She gets on well with everyone.(who)->.......Amy who gets on well with everyone is very popular..........................
10.We understood him in spite of his strong accent.(though)->....we understood him though he was a strong accent ................................
1. My protests were ignored by everybody
-> Nobody took any notice of my protests.
-> Nobody took note of my protests.
-> Nobody paid any attention to my protests.
2. I was not surprised to hear that Harry had failed his driving test
-> It came as no surprise to me to hear that Harry had failed his driving test.
3. It was the fog that caused the traffic problem
-> If it hasn’t been for the fog, there wouldn’t have been traffic problem.
4. We haven't received the confirmation of our hotel booking yet
-> Our hotel booking hasn't been confirmed yet.
5. She didn't inherit anything under her uncle's will
-> Her uncle didn't leave her anything in his will.
6. Betty is very happy to look after handicapped people
-> Betty is devoted to looking after handicapped people.
7. He said that he had been a long way from the scene of the crime at the time
-> He denied having witnessed the crime. / Having been at the scene of the crime at the time.
8. The only thing they didn't steal was the television
-> They stole everything but/except for the TV.
9. Experts think that all dogs evolved from wolves
-> All dogs are thought/ believed / said to have evolved/ descended from wolves.
10. Nicky runs a successful company and she also manages to look after her four children
-> Not only does Nicky run a successful company, but she also manages to look after her four children./ but she manages …. as well.
1. My protests were ignored by everybody
-> Nobody paid attention to my protests.
2. I was not surprised to hear that Harry had failed his driving test
-> It came as no surprise to hear that Harry had failed his driving test.
3. It was the fog that caused the traffic problem
-> If it weren'r fogged, the traffic problem wouldn't be caused . ( Xl, câu này e ko chắc )
4. We haven't received the confirmation of our hotel booking yet
-> Our hotel booking hasn't received confirmation.
5. She didn't inherit anything under her uncle's will
-> Her uncle didn't leave her anything in his will
6. Betty is very happy to look after handicapped people -> Betty is devoted her time to look after handicapped people.
7. He said that he had been a long way from the scene of the crime at the time -> He denied (Câu này e ko pk )
8. The only thing they didn't steal was the television -> They stole everything , except/ apart from the television.
9. Experts think that all dogs evolved from wolves -> All dogs are thought to have evolved from wolves
10. Nicky runs a successful company and she also manages to look after her four children -> Not only does Nicky run a our chidlrensuccessful company but she also manages to look after her four children .
3. By whom were those windows being painted ?
5. Dinner wasn't being eaten (by them)
6. The gate was being painted by us
7. He wasn't being driven home
8. The dogs were being fed by him
9. Were there poems being read by her
10. The floor was being clean when I arrived
11. The homework was being done by her at that time yesterday.
12. A song was being sung at the contest by Nina
13. An important report was being written by me
14. The dishes were being washed by us when you called
15. An english course was being attended by me at this time last year