Future perfect

What is the Futuro anteriore (Future perfect)?

The Futuro anteriore is an Italian compound future tense. In English it corresponds to the "future perfect" (will have + past participle). It usually describes an action that will be completed before another future action or before a specific future time. It is also used in Italian to express a hypothesis or conjecture about a past event (English: "must have / will have").

Translation note: "Futuro anteriore" = "Future perfect."

When do I use the Futuro anteriore?

- To say that one action will be finished before another future action or time (anteriority in the future).
- Example: "Entro le otto avrò finito il lavoro." — "By eight o'clock I will have finished the work."
- Example: "Prima di partire, avremo fatto i bagagli." — "Before leaving, we will have packed our bags."

- In time clauses introduced by quando, appena (as soon as), non appena, dopo che, finché (non) to indicate the subordinate action is completed first.
- Example: "Quando avrai finito, chiamami." — "When you have finished, call me."
- Example: "Non partire finché non avrò parlato con te." — "Don't leave until I have spoken with you."

- To make a conjecture or express probability about a past event (often translated as "must have" or sometimes "will have").
- Example: "Non è in ufficio; sarà uscito." — "He's not in the office; he must have gone out." (literal: "He will have gone out.")
- Example: "Sarà stato un malinteso." — "It must have been a misunderstanding."

Note: The choice between using Futuro anteriore and other tenses (like passato prossimo or trapassato prossimo) depends on the time frame you mean — future anteriority vs completed past events vs anteriority in the past.

How do I form the Futuro anteriore?

Formula: the simple future (futuro semplice) of the auxiliary verb (avere or essere) + the past participle (participio passato) of the main verb.

Future of the auxiliaries (futuro semplice)
- Avere: io avrò, tu avrai, lui/lei avrà, noi avremo, voi avrete, loro avranno.
- Essere: io sarò, tu sarai, lui/lei sarà, noi saremo, voi sarete, loro saranno.

Examples with regular verbs
- Parlare (to speak, uses avere): "Io avrò parlato" — "I will have spoken." / "Noi avremo parlato" — "We will have spoken."
- Ricevere (to receive, avere): "Avrai ricevuto la lettera." — "You will have received the letter."
- Partire (to leave, uses essere): "Sarà partito" / "Sarà partita" — "He/She will have left." (gender agreement explained below)

Irregular past participles (common examples)
- fare -> fatto; dire -> detto; scrivere -> scritto; leggere -> letto; vedere -> visto; prendere -> preso; venire -> venuto; essere -> stato; scegliere -> scelto; bere -> bevuto; mettere -> messo; perdere -> perso; rimanere -> rimasto; nascere -> nato; morire -> morto; piacere -> piaciuto.

Which auxiliary: avere or essere?
- The auxiliary is the same as in passato prossimo. Verbs that are intransitive movement verbs (andare, venire, partire, arrivare, entrare, uscire, salire, scendere), reflexive verbs, reciprocal verbs and many verbs of state or change (nascere, morire, rimanere) use essere.
- Example: "Saremo arrivati a Roma domani." — "We will have arrived in Rome tomorrow."
- Most transitive verbs use avere.
- Example: "Avrò finito il rapporto." — "I will have finished the report."
- Some verbs can take either auxiliary depending on meaning (transitive vs intransitive). When in doubt, check how the verb behaves in passato prossimo.

Agreement of the past participle
- With essere: the participle agrees in gender and number with the subject.
- Example: "Maria sarà partita alle otto." (female singular) — "Maria will have left at eight."
- Example: "I ragazzi saranno tornati tardi." (male plural) — "The boys will have returned late."
- Example: "Le ragazze saranno tornate tardi." (female plural) — "The girls will have returned late."

- With avere: the participle does not normally agree with the subject.
- Example: "Avrò letto il libro." — "I will have read the book."

- Exception (important): when a direct object pronoun (lo, la, li, le) appears before the auxiliary, the past participle agrees with that pronoun.
- Example: "La lettera? L'avrò scritta." — "The letter? I will have written it." (scritta agrees with la = the letter)
- Example: "I documenti? Li avranno inviati." — "The documents? They will have sent them." (inviati agrees with li)

Placement of object pronouns in compound future tenses
- Object pronouns go before the auxiliary (as in other compound tenses). If the pronoun is a vowel clitic, it may attach to the auxiliary with an apostrophe: "L'avrò detto" (I will have said it), "Te l'avrò spiegato" (I will have explained it to you).
- Examples: "Ti avrò chiamato prima di partire." — "I will have called you before leaving." / "Te l'avrò detto." — "I will have told you that."

Negative and interrogative forms
- Negative: place non before the auxiliary: "Non avrò ancora finito." — "I will not have finished yet."
- Question: use intonation or inversion: "Sarà arrivato?" or "Avranno capito?" — "Has he/she arrived? (i.e. will he have arrived?)" / "Will they have understood?"

Passive forms with Futuro anteriore
- The passive future perfect is formed using the future perfect of essere + the past participle of the main verb. It often looks like: "sarà stato + participio" or "saranno stati + participio" and translates as "will have been + past participle."
- Example: "Il ponte sarà stato costruito entro il 2025." — "The bridge will have been built by 2025."
- Example: "La domanda sarà stata inviata." — "The application will have been sent."

Common mistakes and how to avoid them

- Using Futuro anteriore to report a definite past event. If you mean a completed action in the past, use passato prossimo or trapassato prossimo, not futuro anteriore.
- Wrong: "Ieri avrò finito il lavoro." (unless you're only guessing)
- Right: "Ieri ho finito il lavoro." — "Yesterday I finished the work."

- Choosing the wrong auxiliary (avere vs essere). Remember: the auxiliary is the same as in passato prossimo. For reflexive and movement verbs use essere.
- Wrong: "Ha andato a casa." — Wrong auxiliary.
- Right: "È andato a casa." or in future perfect: "Sarà andato a casa." — "He will have gone home."

- Forgetting agreement when using essere.
- Wrong: "Maria sarà partito." (masculine past participle used for a female)
- Right: "Maria sarà partita." — "Maria will have left."

- Misplacing object pronouns. In compound tenses the pronoun must come before the auxiliary: "Lo avrò visto" (not "avrò visto lo").

- Confusing Futuro anteriore with Trapassato prossimo (past perfect). Use trapassato to talk about an action completed before another past event. Use futuro anteriore for actions completed before a future event.
- Trapassato example (past before past): "Quando arrivai, Marco aveva già mangiato." — "When I arrived, Marco had already eaten." (trapassato = aveva mangiato)
- Futuro anteriore example (future before future): "Quando arriverai, Marco sarà già partito." — "When you arrive, Marco will already have left." (futuro anteriore = sarà partito)

Comprehensive examples (grouped by use)

1) Completed before a future time or action
- "Entro domani avremo completato il progetto." — "By tomorrow we will have completed the project."
- "Avrò finito di studiare prima della cena." — "I will have finished studying before dinner."
- "Quando saremo arrivati, la riunione comincerà." — "When we have arrived, the meeting will begin."
- "Appena avrai firmato il contratto, tutto sarà pronto." — "As soon as you have signed the contract, everything will be ready."

2) Time clauses (quando, appena, dopo che, finché non)
- "Quando avrai risposto, mandami la mail." — "When you have replied, send me the email."
- "Non uscire finché non avrò finito il lavoro." — "Don't go out until I have finished the work."
- "Dopo che avremo controllato i dati, prepareremo il rapporto." — "After we have checked the data, we will prepare the report."

3) Probability / conjecture about the past
- "Non risponde al telefono; sarà già uscito." — "He's not answering the phone; he must have already gone out."
- "Avranno sbagliato l'indirizzo." — "They must have put the wrong address."
- "Sarà stato stanco e per questo non è venuto." — "He must have been tired and that's why he didn't come."

4) Pronouns and agreement examples
- "La torta? L'avrò già mangiata." — "The cake? I will have already eaten it." (mangiata agrees with la)
- "I biglietti? Li avranno presi." — "The tickets? They will have taken them." (presi agrees with li)
- "Ci saremo visti la settimana prossima." — "We will have seen each other next week." (reflexive/reciprocal with essere)

5) Passive future perfect
- "Il premio sarà stato assegnato prima della cerimonia." — "The prize will have been awarded before the ceremony."
- "La casa sarà stata venduta entro la fine dell'anno." — "The house will have been sold by the end of the year."

6) Negative and question forms
- "Non avrò ancora ricevuto la conferma." — "I will not have received the confirmation yet."
- "Sarà arrivato il pacco?" — "Will the package have arrived?" (or "Has the package arrived?" as a guess)

Quick contrasts with related tenses

- Futuro semplice vs Futuro anteriore:
- Futuro semplice: describes a future action ("Domani partirò" — "I will leave tomorrow").
- Futuro anteriore: describes a future action that will be completed before another future point ("Domani a quest'ora sarò partito" — "Tomorrow at this time I will have left").

- Passato prossimo vs Futuro anteriore (past vs future anterior):
- Passato prossimo: completed action in the past ("Ho finito" — "I finished / I have finished").
- Futuro anteriore: completed action before a future time ("Avrò finito" — "I will have finished").

- Trapassato prossimo vs Futuro anteriore (both express anteriority, but in different reference frames):
- Trapassato prossimo: anteriority in the past ("Quando sono arrivato, aveva già mangiato" — "When I arrived, he had already eaten").
- Futuro anteriore: anteriority in the future ("Quando arriverai, avrà già mangiato" — "When you arrive, he will already have eaten").

Glossary of key terms

- Auxiliary (ausiliare): a helping verb used to form compound tenses (in Italian: avere or essere).
- Past participle (participio passato): the form of the verb used in compound tenses (e.g., parlato, fatto, scritto).
- Agreement (accordo): when the past participle changes to match the gender and number of the subject or of a preceding direct object pronoun.
- Anteriority (anteriorità): the idea that one action is completed before another; Futuro anteriore expresses anteriority in the future.

Final tip: To choose and use the Futuro anteriore correctly, first decide the time frame you mean (past vs future) and which action comes first. Check the auxiliary (same as passato prossimo). Remember agreement with essere and with preceding direct-object pronouns after avere. Practice by translating sentences like "By tomorrow I will have finished X" into Italian, then check auxiliary and participle agreement.