1.She left university 2 years ago
⇨ It is 2 years since she left university
2. My mother was the most warm-hearted person I've ever known.
⇨ I have never known a more warm-hearted person than his mother
3. I haven't been able to see them for over a year.
⇨ It is over a year since I was last able to see them ( I last saw them )
4. It stared to rain at 2 o'clock.
⇨ It has been raining since 2 o'clock
5. I have never been to the ballet before.
⇨ It is the first time I have ever been to the ballet.
6. John and Mary moved to Edinburgh twenty years ago.
⇨ It is twenty years since John nd Mary moved to Ediburrgh
7. The police started looking for him two months ago.
⇨ For two months now the police has been looking for him/ has looked for him.
8. I have never seen a dirtier-looking dog.
⇨ This is the first time I have ever seen such a dirtier- looking dog
9. Mary rang hours and hours ago.
⇨ It it hours since Mary sang
10. It is ages since Alan visited his parents.
⇨ Alan hasn't visited his parents for ages

1. I have never been to the ballet before.

-> It is the first time I have been to the ballet

2. John and Mary moved to Edinburgh twenty years ago.

-> It is twenty years since John and Mary moved to Edinburgh

3. The police started looking for him two months ago.

-> For two months now the police have been looking for him

4. I have never seen a dirtier-looking dog.

-> This is the dirtiest-looking dog I have ever seen

5. Mary rang hours and hours ago.

-> It is hours and hours since Mary rang

6. It is ages since Alan visited his parents.

-> Alan has not visited his parents for ages

7. John has not had his hair cut for over six months.

-> It is over six months since John last had his hair cut

8. I has never seen such a beautiful building.

-> It's the most beautiful building I have ever seen

9. I have never read such a romantic story.

-> This is the most romantic story I have ever read

10. They had never had such a cold winter.

-> It was the coldest winter they have ever had

man has never had such efficient servants as computer

-computer is the most effecient servents man has had

i have been to the ballet before

-it is the first time I have been to the ballet

jonh and mary moved to endinburgh twenty years ago

-it is 20 years since John and mary moved to endinburgh 

mary rang hours and hours ago

-it is hours and hours since Mary rang

ha hasn't laughed so much for ages

-it's ages since Ha last laughed

the last time i was aboard was in the summer of 1978

-i haven't been abroad since the summer of 1978

the editor last written to mai for a month

-the editor last wrote to Mai a month ago

ly's father stated to stop smoking last year

-ly's father has not smoked since last year

i have learned english for four year

-we started learning E for four year

she started to learn english 8 years ago

-it's 8 years since she started to learn E

Bài tập viết lại câu thì hiện tại hoàn thành và quá khứ đơn

How long is it since you rode a bicyde?

=>When did you ride a bicycle?

How long is it since he wrote to ỵou?

=>When did he write to you?

When did he last talk to you?

=>How long has he talked to you ?

When did you last telephone him?

=>How long have you telephoned him?

We have never eaten this kind of food before.

=>It’s the first time we have eaten this kind of food

This is the fìrst time I have seen this fìlm.

=>I have never seen this film before.

This is the first time he went abroad.

=> He hasn’t gone abroad before.

She started driving 1 month ago.

=>She has driven for 1 month.

We began eating when it started to rain.

=>We have eaten since it started to rain.

I last had my hair cut when I left her

=>I haven’t had my hair cut since I left her.

The last time she kissed me was 5 months ago.

=>She hasn’t kissed me for 5 months.

It is a long time since we last met.

=>We haven’t met for a long time.

When did you have it ?

=>How long have you had it?

This is the first time I had such a delicious meal .

=>I haven’t had such a delicious meal before.

I haven’t seen him for 8 days.

=>The last time I saw him was 8 days ago.

I haven’t taken a bath since Monday.

=>It is since Monday I last took a bath.
Its 2 months since he earned any money.

=>He has earned money for 2 months

He last shaved the day before yesterday.

=>He hasn’t shaved the day since yesterday.

Its 2 years since I was last in Rome.

=>I haven’t been to Rome for 2 years

I saw Tom last on his wedding day.

=>I haven’t seen Tom since on his wedding day

I last ate raw fish when I was in Japan.

=>I haven’t eaten raw fish since I was in Japan

Its ten weeks since since I last had a good night sleep.

=>I haven’t had a good night sleep for ten weeks

He last paid taxes in 1970.

=>He hasn’t paid taxes since 1970

I last ate meat 5 years ago.

=>I haven’t eaten eat for 5 years.

Its years since I took photographs.

=>I haven’t taken photographs for years.

I last watched TV on new years

=> I haven't watched TV since on new years.

Its 3 months since he wrote to me.

=>He hasn’t written to me for 3 months.

The last time I was aboard was in the summer of 1978.

=>I haven’t been abroad since the summer of 1978
Ihavent seen him for 2 months.

=> I last saw him 2 months ago.

Its nearly 20 years since my father saw his brother.

=>My father hasn’t seen his brother for nearly 20 years.

When did you learn to drive?

=>How long is it since you learned to drive?

The last time I went swimming was when we were in Spain.

=>I haven’t gone swimming since we were in Spain.

ThisisthefirsttimeIve been to a night club

=>I haven’t been to a night club before

They have never heard such a thing before.

=>This is the first time they have heard such a thing

Mary rang hours and hours ago.

=>It it hours since Mary rang

It is ages since Alan visited his parents.

=>Alan hasn't visited his parents for ages.

How long is it since you rode a bicyde?

=>When did you ride a bicycle?

How long is it since he wrote to ỵou?

=>When did he write to you?

When did he last talk to you?

=>How long has he talked to you ?

When did you last telephone him?

=>How long have you telephoned him?

We have never eaten this kind of food before.

=>It’s the first time we have eaten this kind of food

This is the fìrst time I have seen this fìlm.

=>I have never seen this film before.

This is the first time he went abroad.

=> He hasn’t gone abroad before.

She started driving 1 month ago.

=>She has driven for 1 month.

We began eating when it started to rain.

=>We have eaten since it started to rain.

I last had my hair cut when I left her

=>I haven’t had my hair cut since I left her.

The last time she kissed me was 5 months ago.

=>She hasn’t kissed me for 5 months.

It is a long time since we last met.

=>We haven’t met for a long time.

When did you have it ?

=>How long have you had it?

This is the first time I had such a delicious meal .

=>I haven’t had such a delicious meal before.

I haven’t seen him for 8 days.

=>The last time I saw him was 8 days ago.

I haven’t taken a bath since Monday.

=>It is since Monday I last took a bath.
Its 2 months since he earned any money.

=>He has earned money for 2 months

He last shaved the day before yesterday.

=>He hasn’t shaved the day since yesterday.

Its 2 years since I was last in Rome.

=>I haven’t been to Rome for 2 years

I saw Tom last on his wedding day.

=>I haven’t seen Tom since on his wedding day

I last ate raw fish when I was in Japan.

=>I haven’t eaten raw fish since I was in Japan

Its ten weeks since since I last had a good night sleep.

=>I haven’t had a good night sleep for ten weeks

He last paid taxes in 1970.

=>He hasn’t paid taxes since 1970

I last ate meat 5 years ago.

=>I haven’t eaten eat for 5 years.

Its years since I took photographs.

=>I haven’t taken photographs for years.

I last watched TV on new years

=> I haven't watched TV since on new years.

Its 3 months since he wrote to me.

=>He hasn’t written to me for 3 months.

The last time I was aboard was in the summer of 1978.

=>I haven’t been abroad since the summer of 1978
Ihavent seen him for 2 months.

=> I last saw him 2 months ago.

Its nearly 20 years since my father saw his brother.

=>My father hasn’t seen his brother for nearly 20 years.

When did you learn to drive?

=>How long is it since you learned to drive?

The last time I went swimming was when we were in Spain.

=>I haven’t gone swimming since we were in Spain.

ThisisthefirsttimeIve been to a night club

=>I haven’t been to a night club before

They have never heard such a thing before.

=>This is the first time they have heard such a thing

Mary rang hours and hours ago.

=>It it hours since Mary rang

It is ages since Alan visited his parents.

=>Alan hasn't visited his parents for ages.

Chúc bn hok tốt !

1,How long is it since you rode a bicyde?

=>When did you ride a bicycle?

2,How long is it since he wrote to ỵou?

=>When did he write to you?

3,When did he last talk to you?

=>How long has he talked to you ?

4,When did you last telephone him?

=>How long have you telephoned him?

5,We have never eaten this kind of food before.

=>It’s the first time we have eaten this kind of food

6,This is the fìrst time I have seen this fìlm.

=>I have never seen this film before.

7,This is the first time he went abroad.

=> He hasn’t gone abroad before.

8,She started driving 1 month ago.

=>She has driven for 1 month.

9,We began eating when it started to rain.

=>We have eaten since it started to rain.

10,I last had my hair cut when I left her

=>I haven’t had my hair cut since I left her.

11,The last time she kissed me was 5 months ago.

=>She hasn’t kissed me for 5 months.

12,It is a long time since we last met.

=>We haven’t met for a long time.

13,When did you have it ?

=>How long have you had it?

14,This is the first time I had such a delicious meal .

=>I haven’t had such a delicious meal before.

15,I haven’t seen him for 8 days.

=>The last time I saw him was 8 days ago.

16,I haven’t taken a bath since Monday.

=>It is since Monday I last took a bath.
17, It 's 2 months since he earned any money.

=>He has earned money for 2 months

18,He last shaved the day before yesterday.

=>He hasn’t shaved the day since yesterday.

19, It's 2 years since I was last in Rome.

=>I haven’t been to Rome for 2 years

20, I saw Tom last on his wedding day.

=>I haven’t seen Tom since on his wedding day

21, I last ate raw fish when I was in Japan.

=>I haven’t eaten raw fish since I was in Japan

22, It's ten weeks since since I last had a good night sleep.

=>I haven’t had a good night sleep for ten weeks

23,He last paid taxes in 1970.

=>He hasn’t paid taxes since 1970

24,I last ate meat 5 years ago.

=>I haven’t eaten eat for 5 years.

25,It's years since I took photographs.

=>I haven’t taken photographs for years.

26,I last watched TV on new years

=> I haven't watched TV since on new years.

27,Its 3 months since he wrote to me.

=>He hasn’t written to me for 3 months.

28,The last time I was aboard was in the summer of 1978.

=>I haven’t been abroad since the summer of 1978
29, I havent seen him for 2 months.

=> I last saw him 2 months ago.

30, It's nearly 20 years since my father saw his brother.

=>My father hasn’t seen his brother for nearly 20 years.

31, When did you learn to drive?

=>How long is it since you learned to drive?

32, The last time I went swimming was when we were in Spain.

=>I haven’t gone swimming since we were in Spain.

33, This is the first time I have been to a night club

=>I haven’t been to a night club before

34,They have never heard such a thing before.

=>This is the first time they have heard such a thing

35,Mary rang hours and hours ago.

=>It it hours since Mary rang

36,It is ages since Alan visited his parents.

=>Alan hasn't visited his parents for ages.

Chúc bn học tốt !!!!!

1. This is the first time his authority has been challenged

2. It has rained since 2 o'clock

3. It is the first time I have ever been to the ballet

4. It is 20 years since John and Mary moved to Edinburgh

5. For two months now the police has looked for him

6. This is the first time I have ever seen such a dirty-looking dog

7. It is over 6 months since John last had his hair cut

8. The last time I played football was in 2000

9. The last time I went to HCM was 2 years ago

10. It is the first time I have ever met such a famous person

11. It is the first time she has seen that boy here

12. The last time she wrote to us was last year

13. It's 8 years since she learned English

14. It's ages since he last laughed so much

15. It's years since I last enjoyed myself so much

16. It's hours since the telephone rang

17. It's ages since I last saw him

18. We started learing English 4 years ago

19. His father hasn't smoked since last year

20. The editor last wrote to Mai was a month ago

21.How long ago did you start to learn Spanish?

22. She hasn't come back to her hometown for 4 years

23. He has worked as a bank clerk for 3 months

24.We have flown to Singapore for years

25. I haven't had my hair cut since November

26. We haven't called each other for 5 months

27. I haven't had such a delicious meal before

28. It is 3 days since I last took a bath

mik cũng ko biết nhiều lắm nhưng mik có vài cấu trúc sẽ giúp đc bn

s+started/began+V-ing/toV+O..---nếu là khoảng thời gian thì+ago

---nếu là mốc tg(hoặc 1 sự kiện) thì có when ở trước

chuyển đổi :S+have/has +V3/ed +O ----since+mốc tg

----for +khoảng tg

----since+một sự kiện

lưu ý :cách dùng since/for:

since +năm/sự kiện(vd since 2019)

for+khoảng tg (vd for 3 hours)

hiện tại hoàn thành chuyển thành qkđơn vs ngược lại

1. noone has challenged his authority before

=> this is the first time they have challenged his authority

2. it stared to rain at 2 o'clock

=> it has rained since 2 o'clock

3. i have never been to the ballet before

=> it is the first time I have been to the ballet

5. the police started looking for him two months ago

=> for two months now the police have looked for him

6. i have never seen a dirtier-looking dog

=>this is the first time I have seen a dirtier-looking dog

7. iohn has not had his hair cut for over six months

=>it is six months since John had his hair cut

8. i haven played football since 2000

=>the last time I played football was 2000

9. i haven't been to HCM city for 2 years

=>the last time I was to HCM City was 2 years ago

10. i've never met such a famous person before

=> it is the first time I have met such a famous person

11. she hasn't seen that boy here before

=>it is the first time I have seen that boy here

12. she hasn't written to us since last year

=>the last time she wrote to us was last year

13. she started to learn e 8 years ago

=>it's 8 years since she started to learn e

14. he hasn't laughed so much for age

=>it's age since he laughed so much

15. i haven't enjoyed myself so much for years

=>it's years since I enjoyed myself so much

16. the telephone rang for hours

=> it's hours since the telephone rang

17.i haven't seen him for ages

=>it's age since I saw him

18. i have learned english for four years

=>we started learning E 4 years ago

19. his father started to stop smoking last year

=>his father has stopped smoking since last year

20. the editor hasn't written to Mai for a month

=>the editor last wrote to Mai was a month ago

21. how long have you learned spanish ?

=> how long ago since you learned spanish ?

22. this last time she came back to her hometown was 4 years ago

=>she hasn's come back to her hometown for 4 years

23. he started working as a bank clerk 3 months ago

=>he has worked as a bank clerk for 3 months

24. it has been e years since we first flew to singapore

=>we have flown to singapore for a years

25. i last had my hair cut in november

=> i haven't had my hair cut since november

26. the last time we called each other was 5 months ago

=>we haven't called each other for 5 months

27. this is the first time i had such a delicious meal

=>i haven't had such a delicious meal before

#Yumi

59. The last time I really enjoyed myself was your birthday party.

I haven’t __enjoyd__myself since your birthday party___________________________________________

60. It's nearly 20 years since my father saw his brother.

My father hasn’t __seen his brother for 20 years_______________________________________

61. When did you learn to drive?

How long is it __sicne you learned to drive________________________________________

62. The last time I went swimming was when we were in Spain.

I haven’t __gone swimming since we were in __Spain__________________________________________

63. You haven't tidied this room for weeks.

It’s weeks _since the last time you tidided_this room___________________________________________

64. We started looking for a flat 2 months ago and we are still looking.

We have _looked for a flat for 2 months____________________________________________

65. This is the first time I've been to a night club

I haven’t _been to a night club before_____________________________________________

66. They have never heard such a thing before.

This is the first time _they have heard such a thing_____________________________________

67. Noone has challenged his authority before.

This is the first time __Noone has challenged his authority____________________________________

68. She left university 2 years ago

It is _2 years since she left university_________________________________________________

69. My mother was the most warm-hearted person I've ever known.

I have _not met the most warm-hearted person my mother before________________________________________________

 I haven't enjoyed myself since your birthday party

 My father hasn't seen his brother for 20 years

How long is it since you learned to drive

 I hasn't swum since we were in Spain

It's weeks since the last time you tidied this room

We have been looking for a flat for 2 months

 I haven't been to a night club before

This is the first time they've heard such a thing

This is the first time one has challenged his authority.

It is for 2 year since she left university

1.    I have never seen a dirtier-looking dog.

ð  This is __the first time I have seen such a dirty-looking dog.______________

2.    Mary rang hours and hours ago.

ð  It it hours __and hours since Mary rang_____

3.    It is ages since Alan visited his parents.

ð  Alan _has not visited his parents for ages________

4.    John has not had his hair cut for over six months.

ð  It is _six months since John had his hair cut____

5.    I have never read such a romantic story.

ð  This is the most __romantic story I have ever read_____

6.    They had never had such a cold winter.

ð  It was the __coldest winter they have ever had______

7.    You will never meet anyone more dangerous than Mrs Jones.

ð  Mr. Jones is the most __dangerous person you will meet____

8.    Man has never had such efficient servants as computer.

ð  Computer is the most ___efficient servant that man has ever had___

9.    I haven't played football since 2000.

ð  The last time __I played football was in 2000____

10.                   I haven't been to HCM city for 2 years.

It is 2 years since I was to HCMC

1.    I have never seen a dirtier-looking dog.

ð  This is __the first time I have seen such a dirty-looking dog.______________

2.    Mary rang hours and hours ago.

ð  It it hours __and hours since Mary rang_____

3.    It is ages since Alan visited his parents.

ð  Alan _has not visited his parents for ages________

4.    John has not had his hair cut for over six months.

ð  It is _six months since John had his hair cut____

5.    I have never read such a romantic story.

ð  This is the most __romantic story I have ever read_____

6.    They had never had such a cold winter.

ð  It was the __coldest winter they have ever had______

7.    You will never meet anyone more dangerous than Mrs Jones.

ð  Mr. Jones is the most __dangerous person you will meet____

8.    Man has never had such efficient servants as computer.

ð  Computer is the most ___efficient servant that man has ever had___

9.    I haven't played football since 2000.

ð  The last time __I played football was in 2000____

10.                   I haven't been to HCM city for 2 years.

It is 2 years since I was to HCMC