1. It’s two years since I last spoke to her.
→ I haven’t spoken to her for two years.
2. It’s 2 years since I saw him.
→ I haven’t spoken to her for two years.
3. I last saw Miss Lan was five years ago.
→ I haven’t seen Miss Lan for 5 years.
4. They began collecting stamps ten years ago.
→ They have collected stamps for 3 years.
5. I have never gone to Thailand before
→ It is the first time I have gone to Thailand.
6. It’s two years since I last spoke to her.
→ I haven’t spoken to her about two years.
7. She has learnt English for three years.
→ She started to learnt English three years ago.
8. This is the first time I have met him.
→ I have never met him before.
9. I last saw Bob when I was in Ho Chi Minh City.
→ I haven’t seen Bob since I was in Ho Chi Minh City.
10. We haven't met each other for five years.
→ We last saw each other was five years ago.
11. I haven’t eaten this kind of food before.
→ This is the first time I have ever eaten this kind of food.
12. I last met him five months ago.
→ I haven’t met him for five months.
13. It’s 3 years since I last saw Nam.
→ I haven’t saw Nam for 3 years.