1- I have not seen ger for six years

I knew him when i was at school

2-He has lived in Paris from 1997 to 2000

He lives in New York since 2001

3-Where is Pete? I have not seen him for ages

I did see Pete last night

4-we have been at primary school from 1993 to 1998

We were  in this class simce September

5- I have watched this video yet

I didnt watch a video at the weekend