1. I'm really hungry. I haven't eatenyet.
2. The arrived a week ago.
3. We have worked here for three years.
4. They didn't recognise me at yesterday's metting.
5 Our neighbour has been in hospital since Friday.
6. Did you travel abroad many times?
Из этого упражнения мы выносим, что мы можем различать эти два времени по словам-указателям.
Для Past Simple это:
- ago (I visited him two weeks ago)
- yesterday (I didn't go to school yesterday)
- many times
Для Present Perfect Simple это:
- yet (I haven't been to school yet)
- for (My granny has lived here for ten years)
- since (We haven't seen him since Saturday)