Essere vs. Avere: The Passato Prossimo Auxiliary Guide
In Italian, creating compound past tenses like the Passato Prossimo requires choosing between essere (to be) and avere (to have).
1. When to use AVERE
Transitive Verbs (Take a Direct Object)
If the action answers "Chi?" (Who?) or "Che cosa?" (What?), always use avere. The past participle ending does NOT change with the subject.
(I ate a pizza - direct object.)
(We watched a movie.)
2. When to use ESSERE
Motion, State of Being & Reflexives
Verbs expressing direction/movement, change of state, and all reflexive verbs take essere. The participle must agree in gender and number (-o, -a, -i, -e).
(Marco went to Rome.)
(Giulia went to Rome.)
🚶 Categories of Verbs Taking ESSERE
andare (to go), venire (to come), partire (to depart), tornare (to return), arrivare (to arrive), uscire (to go out).
essere (to be), stare (to stay), rimanere (to remain), nascere (to be born), morire (to die), diventare (to become).
svegliarsi (to wake up), lavarsi (to wash oneself), vestirsi (to get dressed). E.g., Mi sono svegliato/a alle 7.
⚡ Verbs with Both Auxiliaries: Transitive vs. Intransitive
Some verbs change auxiliary depending on whether they take an object (transitive = avere) or happen on their own (intransitive = essere):
| Verb | With AVERE (Transitive) | With ESSERE (Intransitive) |
|---|---|---|
| finire (to finish) | Ho finito il libro. I finished the book. | Il film è finito. The film ended. |
| cominciare (to begin) | Ho cominciato la lezione. I started the class. | La lezione è cominciata. The class started. |
| cambiare (to change) | Ho cambiato casa. I changed house. | Il tempo è cambiato. The weather changed. |
| passare (to pass / spend) | Ho passato una bella serata. I spent a lovely evening. | L'autobus è passato. The bus passed by. |