Has the show ended?
loh spet-TA-koh-loh eh fee-NEE-toh.
When you are unsure whether the curtain calls are the real end or whether more acts follow. Opera can be confusing if you do not know how many acts there are.
Lo spettacolo is the show or performance. È finito is the third-person singular of the passato prossimo of finire (to finish). Finito agrees with spettacolo (masculine). A simple and practical question.
Quanti atti mancano?
How many acts are left?
Asking how much is still to come.
È questo l'ultimo intervallo?
Is this the last interval?
Checking whether there is another break coming.
Inizia ora il terzo atto?
Is the third act starting now?
Confirming which act is about to begin.
Leaving before the end of an Italian opera is considered very poor form — especially before the last curtain call. Italians who leave early are known disapprovingly as 'quelli che scappano'. Always stay for the curtain calls — they can be spectacular affairs lasting fifteen minutes.