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1. we began to learn english 4 years ago->we have been learnt EL since 4 years ago
2.my father started to give up smoking last year->my father has started give up smoking since last year
3. they have worked in that factory since 2001->they started working in that factory in 2001
4.lan hasn't written to maryam for a month ->lan didn't write to maryam last month
5. he has lived in hn since he was 12->he started living in Ha Noi when he was 12
Chúc bạn học tốt 
1. we began to learn english 4 years ago->we have been leant English since 4 years ago
2.my father started to give up smoking last year->my father has started give up smoking since last year
3. they have worked in that factory since 2001->they started to work in that factory in 2001
4.lan hasn't written to maryam for a month ->lan didn't wirte maryam last month
5. he has lived in hn since he was 12->he started living in HN when he was 12
1. She has worked here for ten years
=> She started work here ten years ago
2. They began to live in Ha Noi in 1990
=> They have lived in HN since 1990
3. I started to play the piano ten years ago
=> I have played the piano for ten years
4. She has worked as a teacher for 7 years
=> She began work as a teacher 7 years ago
5. He last phoned me in August
=> He hasn't phoned me since August
6. It's ages since I saw her
=> I haven't seen her for ages
7. I have never been here before
=> It is the first time I have been here
8. They have worked in this factory since 2001
=> They started work in this factory in 2001
9. She last wore that dress at her sister's wedding
=> She hasn't wore that dress since she is at hẻ sister's wedding
10. They haven't phoned us for a month
=> It is a month that they haven't phoned us
1.she has worked here for ten years
she began working here ten years ago
2.they began to live in ha noi in 1990
they have lived in hanoi since 1990
3.i started to play the piano ten years ago
i have played the piano for ten years
4.she has worked as a teacher for 7 years
she began to work as a teacher 7 years ago
5.he last phoned me in august
he hasn't phoned me since august
1 swim as well as Thu can.
2 the weather was bad, Lan went camping yesterday.
3 worked in this factory for 6 years.
4 swims fast and well.
1. My parents have worked in this factory for over 20 years.
-> Over 20 year ago, my parents began to work in this factory.
-> Over 20 year ago, my parents began working in this factory.
2. He has worked at the factory for 15 years.
-> He started working at the factory 15 years ago.
-> He started to work at the factory 15 years ago.
3. We have learned English for one year .
-> We began to learn English one year ago.
-> We began learning English one year ago.
4.How long is it since they bought the house?
-> When did they buy the house?
5. When did you last see Tom?
-> How long haven't you seen Tom?
1. My parents have worked in this factory for over 20 years.
-> Over 20 year ago, my parents began to work in this factory.
-> Over 20 year ago, my parents began working in this factory.
2. He has worked at the factory for 15 years.
-> He started working at the factory 15 years ago.
-> He started to work at the factory 15 years ago.
3. We have learned English for one year .
-> We began to learn English one year ago.
-> We began learning English one year ago.
4.How long is it since they bought the house?
-> When did they buy the house?
5. When did you last see Tom?
-> How long haven't you seen Tom?
1. She has been in Vung Tau ....since.... January.
2.Ha and Nam have seen this film .....since......... 7 o’clock.
3. I have sent her 3 letters ..........since....... last week.
4. My sister has worked at that hospital .....for............. 5 years.
5. I have known her ..........since...... we were at elementary school.
6. Nam has become a footballer .....for............ 3 years.
7. She’s been in London .........since....... Monday.
8. Mike has lived in Hanoi .........for....... four years.
9. I have written to her ............since....... Christmas.
10. We’ve not seen her ..........since......... last month.
1 . since
2 . since
3 . since
4 . for
5 . since
6 . for
7 . since
8 . for
9 . since
10 . since
Bài 8 :
1 . have lived
2 . have worked
3 . has read
4 . have known
5 . haven't seen
6 . haven't worked
7 . have bought
8 . haven't planed
9 . have you been
10 . has written
11 . Have you been
12 . hasn't started
13 . Has he spoken
14 . hasn't had
15 . has just caught
16 . has already invited
17 . has made
18 . has lost
19 . have just cleaned
20 . have given up
1. She has been in Vung Tau ...since.. January.
2.Ha and Nam have seen this film .....since.. 7 o’clock.
3. I have sent her 3 letters .....since. last week.
4. My sister has worked at that hospital ....for........ 5 years.
5. I have known her ....since.... we were at elementary school.
6. Nam has become a footballer ......for...... 3 years.
7. She’s been in London ..since... Monday.
8. Mike has lived in Hanoi for.... four years.
9. I have written to her ...since.. Christmas.
10. We’ve not seen her ...since... last month.
My father worked in this factory
My father began working in this factory