This verb form describes a past action that is not presented as a sure fact. It is used to express thoughts, feelings, doubts, or possibilities about something that happened before the moment of speaking or thinking. It connects a personal viewpoint in the present to an event in the past.
Use this tense after words that express a personal opinion, belief, or doubt about a past event. The thinking happens now, but the action happened earlier.
Credo che lui
abbia finito il suo lavoro
ieri.
(I believe he finished his work yesterday.)
Penso che Maria non
abbia capito la domanda.
(I think Maria didn't understand the question.)
Non sono sicuro che loro
siano partiti in tempo.
(I'm not sure they left on time.)
Dubito che tu
abbia dormito bene.
(I doubt that you slept well.)
Use it to talk about a feeling or emotion you have now about something that happened in the past.
Sono felice che tu
sia venuto alla festa.
(I'm happy that you came to the party.)
Mi dispiace che non
abbiate visto il film.
(I'm sorry that you all didn't see the movie.)
Ho paura che il cane
sia scappato.
(I'm afraid the dog has escaped.)
È contenta che noi
abbiamo portato il dolce.
(She is happy that we brought the dessert.)
It is used after verbs expressing a hope or wish about a past action or situation.
Spero che voi
abbiate passato una bella vacanza.
(I hope you all had a nice vacation.)
Spero che l'esame non
sia stato troppo difficile.
(I hope the exam wasn't too difficult.)
Use this tense after common phrases that express uncertainty, possibility, or a judgment about a past event. These phrases often start with 'È..'. (It is...).
È possibile che loro
abbiano perso il treno.
(It's possible that they missed the train.)
Sembra che
abbia piovuto stanotte.
(It seems like it rained last night.)
È un peccato che tu non
sia potuto venire.
(It's a shame that you couldn't come.)
È strano che Marco non
abbia ancora chiamato.
(It's strange that Marco hasn't called yet.)
This tense is used after certain connecting words like nonostante (although/despite) and prima che (before) when talking about a past event.
Usciamo,
nonostante abbia piovuto tutto il giorno.
(We're going out, even though it rained all day.)
Sebbene lui
abbia studiato molto, non ha passato l'esame.
(Although he studied a lot, he didn't pass the exam.)
Ho finito i compiti
prima che mia madre
sia tornata.
(I finished my homework before my mother came back.)
Use it after expressions that describe something as the most, least, or only one, when it's a personal and subjective opinion.
È il film più bello che io
abbia mai visto.
(It's the best movie that I have ever seen.)
Questa è l'unica volta che lui
sia arrivato in ritardo.
(This is the only time that he has arrived late.)
Remember, the key idea is uncertainty or personal feeling about a past event. If the action is a sure fact, you use a different past tense.
