1. I started learning English three years ago.
→ I have learned English for three years.
2. I have never met him for three years.
→ I last saw him three years ago.
3. We have studied French for 4 years.
→ We started To study French 4 years ago.
4. I haven't seen her for a long time.
→ I didn't see her for a long time.
They have worked in that factory since 1996.
-> They started to work in that factory in 1996.
6. How long have you learnt English?
→ How long ago did you learn English?
7. He has seen her when he was 12.
→ He started to see her when he was 12.
8. Lan hasn't written to me for a month.
→ Lan didn't write to me a month ago.
9. My father started to give up smoking last year.
→ My father has given up smoking for a year.
10. When did you start to listen to classical music?
→ How long have you listened to classical music?
11. I last saw her 10 years ago.
→ I haven't seen her for 10 years.
12. How long have you bought this car?
→ When did you buy this car?
