NB: . FORMA BASE DEL VERBO = INF-TO

E’ specificato o implicato
esattamente quando si è svolta l’azione?
No
Sì
Il tempo specificato si è concluso nel passato?
No
Sì
PAST SIMPLE
PRESENT PERFECT
I/you/we/they + have + participio passato
Verbi regolari: Soggetto + forma base del verbo +-ed
he/she/it + has + participio passato
Verbi irregolari: Soggetto + 2°paradigma
We have talked (today)
We talked yesterday
She has spoken (today)
She spoke yesterday
I/you/we/they/ + haven’t + part.passato
Verbi regolari: Soggetto + didn’t + forma base del verbo
he/she/it + hasn’t + participio passato
Verbi irregolari: Soggetto + didn’t + forma base del verbo
We haven’t talked (today)
We didn’t talk yesterday
She hasn’t spoken (today)
She didn’t speak yesterday
Have + I/you/we/they + part.passato…?
Verbi regolari: Did + soggetto + forma base del verbo…?
Has + he/she/it + participio passato…?
Verbi irregolari: Did + soggetto + forma base del verbo…?
Have we talked (today)?
Did we talk yesterday?
Has she spoken (today)?
Did she speak yesterday?
NB: . FORMA BASE DEL VERBO = INF-TO