сложность в том, что я не понимаю в каких случаях ставить present perfect, а в каких past simple

1. Oliver has been at this school for five years..

2. I have had this jacket for two years...

3. That team won the league...

4. My friend appeared on Tv..

5. Have you ever eaten indian...

6. My parents have lived in our house..

7. I bought a present for you..

8. We flew to New Zealand

Объяснение: