L'aggiornamento definitivo è iniziato oggi.

Breakdown of L'aggiornamento definitivo è iniziato oggi.

essere
to be
oggi
today
iniziare
to start
l'aggiornamento
the update
definitivo
definitive

Questions & Answers about L'aggiornamento definitivo è iniziato oggi.

Why does this sentence use è iniziato (essere) instead of ha iniziato (avere)?
Iniziare (to start) is one of those verbs that can take either auxiliary. When an event or thing just starts on its own—like the update in this sentence—it doesn't have a direct object, so we use essere. You only use avere when someone or something starts another thing.
If I wanted to say "The technician started the update today," would I still use essere?
No, you would switch to avere. In that case, the technician is the subject and the update becomes the direct object. You would say: Il tecnico ha iniziato l'aggiornamento oggi. This split personality is how verbs like iniziare, finire, and cambiare work!
Why does the past participle iniziato end in -o here?
Because the sentence uses the auxiliary verb essere, the past participle must agree in gender and number with the subject. L'aggiornamento is a masculine singular noun, so iniziato keeps the masculine singular -o ending. If the subject were feminine, like la partita (the game), it would be è iniziata.
Is there a trick to remembering the long word aggiornamento (update)?
Yes! Look closely at the root of the word: giorno means "day". The verb aggiornare literally means to bring something "up to the current day". By adding the noun-forming suffix -mento, you get aggiornamento—the act of bringing something up to date.

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