Present Perfect
1. You are going to the airport. You look out of the window and see your taxi, so you tell your friend: 'My taxi arrived.' 'My taxi has arrived.'
2. Pete is showing you his home. He says: 'I lived here for two years.' 'I have lived here for two years.'
3. Your brother touches the wall and gets wet paint on his fingers. You tell him: 'Careful! I have just painted that.' 'Careful! I painted that.'
4. You show Pete the home where you used to live. You tell him: 'I lived there for seven years.' 'I have lived there for seven years.'
5. A visitor admires a picture on your wall. You say: 'I painted that last year.' 'I have painted that last year.'
6. Someone asks about your homework. You tell him: 'I haven't done it yet.' 'I didn't do it yet.'
7. Every week John's marks get better. His teacher says: 'You have been working hard.' 'You worked hard.'
8. Pete tells Bill his computer is broken. Bill says: 'It works now. I have been fixing it' 'It works now. I have fixed it.'