(from Duolingo)

The future perfect in Italian is formed using the future tense of avere” (avrò, avrai, avrà, etc.) or essere” (sarò, sarai, sarà, etc.) followed by the past participle of the verb (-ato, -uto, -ito). Agreement for the participles and the use of “avere” or “essere” follows the same rules as the present perfect (passato prossimo) and all other perfect tenses.

Though the Italian future perfect can be translated as the future perfect in English (for example, “will have played”), there are a couple of unique uses of the future perfect in Italian.

One of these is the conjectural future tense. In Italian, the future and future perfect are used to express a conjecture about something in the present or the past, respectively. For statements, this can often be translated as “must” (in the future) or “must have” (in the future perfect):

  • Marta avrà voluto un gatto. (Marta must have wanted a cat.)

For questions, one can express conjecture in English with “could,” “can,” “might,” etc.

  • Chi l’avrà preso? (Who can have taken it?)

You may also note that Italian uses the future or future perfect in some adverbial clauses (after “quando,” for example) referring to an action in the future, where English prefers the present or present perfect. For example:

  • Quando avrò finito i compiti, ti chiamerò. (When I have finished my homework, I will call you.)

(by DuoItalian)

The future perfect follows the same rules in regard to avere and essere as the present and past perfect.

→ Click here for a brief explanation: AVERE or ESSERE?

(from Duolingo)
avrà  avutohe will have had
sarà  statohe will have been
avrai potutoyou will have been able to
sarà  venutohe will have come
avrò fattoI will have made
avrà trovatohe will have found
avrò saputoI will have found
avremo vistowe will have seen
avrà  conosciutohe will have met
avrà  volutohe will have wanted
avranno dettothey will have told
saranno andatithey will have gone
avrai datoyou will have given
avranno pensatothey will have thought
avremo parlatowe will have talked
avrà  messohe will have put
avrà  presohe will have brought
avremo portatowe will have brought
saranno arrivatithey will have arrived
avrà  chiestohe will have asked
avrò credutoI will have believed
avrà  lasciatohe will have left
saranno sentitithey will have felt
avrò tenutoI will have held
saranno diventatithey will have become
avrà  capitohe will have understood
saremo rimastiwe will have remained
saranno passatithey will have passed
sarai entratoyou will have entered
avrò lavoratoI will have worked
avrai vissutoyou will have lived
avranno ricordatothey will have remembered
avranno usatothey will have used
avremo chaimatowe will have called
sarai mortoyou will be dead
sarà  piaciutahe will have liked
avremo guardatowe will have watched
avro apertoI will have opened
avrà  seguitohe will have followed
avrà  aspettatohe will have waited for
sarà  stato apertoit will have been opened
sarà  stato chimatohe must have been named


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