Presente
What is happening now, habits, general truths, and plans: domani parto.
- succede
- succedono
Succedere
to happen
Irregular verb, gerund succedendo, past participle successo, auxiliary essere.
Newbie
Enough to talk about now, your plans, and the past.
Passato prossimo
The everyday past for a finished action: avere or essere plus the participle.
- è successo
- sono successi
Imperfetto
Past habits, descriptions, and what was going on.
- succedeva
- succedevano