Passato Prossimo: When Do You Use "Essere" or "Avere"?

ITALIANO CON ROBERTO

Passato Prossimo: When Do You Use "Essere" or "Avere"?

A2 · B1 · B2

If you've studied a little Italian, you already know the passato prossimo needs two pieces: an auxiliary verb (essere or avere) plus the past participle. The tricky part isn't the participle — it's choosing the right auxiliary. Get this wrong, and a native speaker will notice immediately.

The good news: there's a real rule behind it, not just a list to memorize by brute force.

The golden rule: transitive verbs want "avere"

If a verb can take a direct object — something you can "do to" someone or something — it almost always uses avere.

• Ho mangiato una pizza. (I ate a pizza.)
• Ho letto il libro. (I read the book.)
• Ho visto Marco ieri. (I saw Marco yesterday.)

(In English: if you can ask "what?" or "whom?" after the verb — ate what, read what, saw whom — the verb is transitive, and Italian pairs it with "avere".)

"Essere" is for movement, change of state, and reflexive verbs

Verbs of motion (andare, venire, partire, arrivare, entrare, uscire, tornare), verbs of "becoming" (diventare, nascere, morire), and all reflexive verbs (lavarsi, alzarsi, svegliarsi) use essere.

• Sono andato al mercato. (I went to the market.)
• Siamo arrivati tardi. (We arrived late.)
• Mi sono svegliata alle sette. (I woke up at seven.)

The detail that trips up every student: agreement

With essere, the past participle changes ending to agree with the subject's gender and number — exactly like an adjective. With avere, the participle normally stays in its base -o form, no matter who's speaking.

Maria è andata a scuola. (Maria went to school — participle ends in -a because Maria is feminine.)
Marco e Luca sono partiti presto. (Marco and Luca left early — participle ends in -i, masculine plural.)
Maria ha mangiato una mela. (Maria ate an apple — participle stays "mangiato" even though Maria is feminine, because "avere" doesn't agree.)

(This single detail — that "essere" makes the participle behave like an adjective, while "avere" doesn't — is often the exact moment Italian grammar "clicks" for English speakers.)

The verbs that go both ways

A handful of common verbs (correre, volare, cambiare, passare, salire, scendere) can take either auxiliary depending on whether they're used transitively or not:

Ho corso per un'ora. (I ran for an hour — no object, but "correre" here is treated as an activity → avere.)
Sono corso a casa. (I ran home — movement to a destination → essere.)

✏️ Try it yourself — click for the answer

Fill the gap: Ieri sera Anna ___ (tornare) a casa tardi e ___ (mangiare) qualcosa prima di dormire.

Answer: Ieri sera Anna è tornata a casa tardi e ha mangiato qualcosa prima di dormire.
(tornare = movement → essere, with -a agreement for Anna; mangiare = transitive → avere, no agreement.)

📖 Continua a leggere / Keep reading:
Il Passato Prossimo nella lingua italiana
Il congiuntivo imperfetto in italiano

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