$\Rightarrow$
1. Samuel has kept a diary since 1997.
2. We have learned English for 5 years.
3. I have lived in Ho Chi Minh City since I was 8.
4. She has driven for 1 month.
5. We have eaten since it started to rain.
6. We have looked for a flat for 2 months and we are still looking.
7. It has rained since 2 o'clock.
8. It's 8 years since she started to learn.
9. She has written for 30 minutes.
10. They have studied English since they were in grade 3.
11. She has cried for two hours.
12. He has been a teacher for 20 years.
13. We have chatted on the phone since it began to rain.
14. He has been a doctor for 15 years.
15. She has done the housework since she got home.
16. She started to teach the children in this remote village five months ago.
17. I started to learn English several months ago.
18. My family began to live in this city when I was 4 years ago.
19. Mr. John started to work in this company when he left university.
20. They began to eat breakfast 10 minutes ago.
Cấu trúc chuyển từ thì Quá khứ đơn sang thì Hiện tại hoàn thành ( và ngược lại ):
- S + started/ began + V-ing/ to-V + khoảng thời gian.
= S + have/ has + PII + since + khoảng thời gian/ for + khoảng thời gian.
- S + last + V(qkđ) + thời gian trong quá khứ.
= S + hasn't/ haven't + PII + since + mốc thời gian/ for + khoảng thời gian.
= The last time + S + V(qkđ) + was + thời gian trong quá khứ.
- S + have/ has + never + PII + before.
= This is the first time + S + have/ has + PII.
- S + haven't/ hasn't + PII + for + khoảng thời gian.
= It's + khoảng thời gian + since + S + last + V(qkđ).
- When did + S + V(inf) ?
= How long have / has + S + PII ?
1. Samuel has kept a diary since 1997.
2. We have learned English for 5 years.
3. I have lived in Ho Chi Minh City since I was 8.
4. She has driven for 1 month.
5. We have eaten since it started to rain.
6. We have looked for a flat for 2 months and we are still looking.
7. It has rained since 2 o'clock.
8. It's 8 years since she started learning.
9. She has written for 30 minutes.
10. They have studied English since they were in grade 3.
11. She has cried for two hours.
12. He has been a teacher for 20 years.
13. We have chatted on the phone since it began to rain.
14. He has been a doctor for 15 years .
15. She has done the housework since she got home.
16. She started teaching/ to teach the children in this remote village five months ago.
17. I started learning/ to learn English several months ago.
18. My family began living/ to live in this city when I was 4 years old.
19. Mr. John started working/ to work in this company when he left university.
20. They began eating/ to eat breakfast 10 minutes ago.
Tiếng Anh hay Anh Ngữ (English /ˈɪŋɡlɪʃ/ ) là một ngôn ngữ German Tây, được nói từ thời thời Trung cổ tại Anh, ngày nay là lingua franca toàn cầu.Từ English bắt nguồn từ Angle, một trong những bộ tộc German đã di cư đến Anh (chính từ "Angle" lại bắt nguồn từ bán đảo Anglia (Angeln) bên biển Balt)
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