PRESENT PERFECT
I have never been to Italy.
He has just read the text and can have a rest.
We have already watered flowers.
Max hasn't done it yet.
I can see anything - I have lost my glasses.
PAST SIMPLE
Last Saturday we went to the cinema.
I didn't go to school yesterday, I was ill.
What did you do two days ago?
We swam in the sea in the summer.
I played tennis with my friends last Sunday.