1. She has never drunk whisky before .
-> This is the first time she has drunk whisky.
2. He has never known me before.
-> It is the first time he has known me.
3. This is the first time I've visited Ha Long Bay.
-> We've never been to Ha Long Bay before.
4. The last time she kissed me was 5 months ago.
-> She hasn't kissed me for 5 months.
5. I last had my hair cut when I left her.
-> I haven't had my hair cut since I left her.
6. It is a long time since since we last met.
-> We haven't met for a long time.
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 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 haven such a delicious before.
15. I haven't seen him for 8 days.
-> The last time I saw him was 8 days ago.