Exemple:
1. He has already finished his classes.
2. Tom has just spoken on the phone with Mary.
3. They haven't written the exercise yet.
never, ever, often
Exemple:
1. I have never heard such a thing.
2. Have you ever read this news?
3. I have often travelled by car to the countryside.
ever and before
Exemplu:
Have you ever heard this song before?
until now, so far, up to now
Exemple:
1. I haven't had any Math problems up to now.
2. So far, he hasn't complained about his wage.
3. Until now, I haven't heard about this English singer
Explicație: