1. I last saw him two years ago.

2. She began to play volleyball when she was eight.

• She has been playing volleyball since she was eight.

3. I have taught English at Nguyen Khayep school for sixteen years.

• I started to teach English at Nguyen Khayep school sixteen years ago.

4. We haven't met each other for three years.

• It's three years since we last met each other.

5. I haven't been to the dentist's for two years.

• It's two years since I last went to the dentist's.

6. It's three months since she started learning French.

• She has been learning French for three months.

7. When did you start learning English?

• How long have you been learning English?
• How long ago did you start learning English?

1. I haven't seen him for two years.
2. She began to play volleyball when she was eight.
3. I started teaching English at Nguyen Khuyen school sixteen years ago.
4. It's three years since we met each other.
5. It's two years since I went to the dentist's.
6. She has been learning French for three months.
7. When did you start learning English?
8. How long have you been learning English?
9. How long ago did you start learning English?