Future Perfect Subjunctive

Subjunctive

1Formation

The Futuro Perfecto de Subjuntivo is formed with the Futuro de Subjuntivo of haber + Past Participle.

Formation pattern: hubiere/hubieres/hubiere/hubiéremos/hubiereis/hubieren + Past Participle

Conjugation of haber in Futuro de Subjuntivo:

Person haber
yo hubiere
hubieres
él/ella hubiere
nosotros hubiéremos
vosotros hubiereis
ellos/ellas hubieren

Participle formation:

  • -ar verbs: hablado (spoken)
  • -er verbs: comido (eaten)
  • -ir verbs: vivido (lived)

Irregular participles: hecho (hacer), dicho (decir), visto (ver), escrito (escribir), puesto (poner)

2Conjugation Table

Personhablarcomervivir
yohubiere habladohubiere comidohubiere vivido
hubieres habladohubieres comidohubieres vivido
él/ellahubiere habladohubiere comidohubiere vivido
nosotroshubiéremos habladohubiéremos comidohubiéremos vivido
vosotroshubiereis habladohubiereis comidohubiereis vivido
ellos/ellashubieren habladohubieren comidohubieren vivido

3Usage

The Futuro Perfecto de Subjuntivo is an archaic form (C2 level) that is rarely used in modern Spanish. It appears mainly in:

1. Legal and official texts In laws, contracts and formal documents.

  • Si el acusado hubiere cometido el delito... → If the accused should have committed the crime...
  • Cuando el plazo hubiere vencido... → When the deadline should have expired...

2. Literary and historical texts In older novels, poems and historical documents.

  • Quien hubiere leído este libro... → Whoever should have read this book...

3. Proverbs and fixed expressions Some classical proverbs use this form.

  • Adonde fueres, haz lo que vieres. → Wherever you go, do as you see. (adaptation)

In modern Spanish this form is replaced by:

  • Subjuntivo Perfecto: Si haya cometido el delito...
  • Indicativo: Si ha cometido el delito...

Note: This form is important for understanding classical texts but is no longer actively used in everyday speech.

4Signal Words

si (+ Futuro Perfecto Subj.)= if (in legal texts)
cuando (+ Futuro Perfecto Subj.)= when/once (archaic)
quien hubiere...= whoever should have...
el que hubiere...= the one who should have...

5Example Sentences

Si hubiere terminado el trabajo, te avisaré.

If I should have finished the work, I will notify you.

Cuando hubiere llegado el momento, actuaremos.

When the moment should have arrived, we will act.

El que hubiere cometido el delito será castigado.

The one who should have committed the crime will be punished.

Si lo hubiere sabido antes, habría actuado diferente.

If I should have known it before, I would have acted differently.

6Irregular Verbs

Irregular past participles (most common)

Verbyoél/ellanosotrosvosotrosellos/ellas
hacerhubiere hechohubieres hechohubiere hechohubiéremos hechohubiereis hechohubieren hecho
decirhubiere dichohubieres dichohubiere dichohubiéremos dichohubiereis dichohubieren dicho
verhubiere vistohubieres vistohubiere vistohubiéremos vistohubiereis vistohubieren visto

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