- Form the pluperfect subjunctive with haber (imperfect subjunctive) + past participle
- Express hypothetical actions that would have been completed in the past
- Use pluperfect subjunctive in third conditional sentences (si clauses)
- Express past wishes and regrets with ojalá + pluperfect subjunctive
- Distinguish between pluperfect subjunctive and other subjunctive tenses
- Apply both forms: hubiera and hubiese interchangeably
What You'll Learn
Overview
The pluperfect subjunctive (pluscuamperfecto de subjuntivo) expresses hypothetical actions that would have been completed in the past. It's formed with the imperfect subjunctive of haber (hubiera/hubiese) + past participle.
This is the most advanced subjunctive tense, combining the pluperfect aspect (past perfect) with the subjunctive mood (hypothetical). Use it primarily for:
- Third conditional sentences: "If I had known, I would have come" (Si hubiera sabido, habría venido)
- Past wishes and regrets: "I wish I had studied more" (Ojalá hubiera estudiado más)
- After past subjunctive triggers: "I doubted he had arrived" (Dudaba que hubiera llegado)
- Expressing what might have happened: "As if it had been true" (Como si hubiera sido verdad)
Two Forms: Hubiera vs Hubiese
The pluperfect subjunctive has two grammatically interchangeable forms: hubiera and hubiese. Both mean exactly the same thing ("Si hubiera sabido" = "Si hubiese sabido" - If I had known). However, hubiera is more common in everyday speech, especially in Latin America, while hubiese tends to be more formal and literary. You'll see hubiese more often in formal writing, academic texts, and literature.
Structure & Formation
Conjugating Haber in the Imperfect Subjunctive
Hubiera form (more common in Latin America):
yo → hubiera
hubiera hablado
I had spoken (hypothetical)
tú → hubieras
hubieras comido
you had eaten (hypothetical)
él/ella/usted → hubiera
hubiera vivido
he/she had lived (hypothetical)
nosotros/as → hubiéramos
hubiéramos terminado
we had finished (hypothetical)
vosotros/as → hubierais
hubierais salido
you all had left (hypothetical)
ellos/ellas/ustedes → hubieran
hubieran llegado
they had arrived (hypothetical)
Hubiese form (interchangeable): hubiese, hubieses, hubiese, hubiésemos, hubieseis, hubiesen
Forming Past Participles
Regular -ar verbs: → -ado
hablar → hablado, estudiar → estudiado, trabajar → trabajado
Regular -er/-ir verbs: → -ido
comer → comido, vivir → vivido, salir → salido
Common irregular participles:
hacer → hecho, escribir → escrito, ver → visto, decir → dicho,
poner → puesto, volver → vuelto, abrir → abierto, romper → roto, morir → muerto
Common Uses of Pluperfect Subjunctive
Si + pluperfect subjunctive
Si hubiera sabido, habría venido
If I had known, I would have come
Ojalá + pluperfect subjunctive
Ojalá hubiera estudiado más
I wish I had studied more
Como si + pluperfect subjunctive
Hablaba como si hubiera estado allí
He spoke as if he had been there
Past doubts/emotions
Dudaba que hubieran llegado
I doubted they had arrived
Aunque + pluperfect subjunctive
Aunque hubiera llovido, habríamos ido
Even if it had rained, we would have gone
Antes de que + pluperfect subjunctive
Salió antes de que hubiéramos llegado
He left before we had arrived
Examples
Regrets & Past Wishes
Third Conditional (If... would have...)
As If (Como si)
Past Doubts & Emotions
Common Mistakes
Using conditional perfect instead of pluperfect subjunctive after 'si'
Si habría sabido, habría venido
Si hubiera sabido, habría venido
After 'si' in third conditionals, use pluperfect subjunctive (hubiera), not conditional perfect (habría).
Using perfect subjunctive instead of pluperfect subjunctive
Si haya sabido (perfect subjunctive)
Si hubiera sabido (pluperfect subjunctive)
Perfect subjunctive (haya) is for completed actions with present context. Pluperfect subjunctive (hubiera) is for hypothetical past perfect.
Confusing hubiera with habría
Ojalá habría estudiado más
Ojalá hubiera estudiado más
After 'ojalá' for past wishes, use pluperfect subjunctive (hubiera), not conditional perfect (habría).
Using indicative pluperfect instead of subjunctive
Si había sabido (pluperfect indicative)
Si hubiera sabido (pluperfect subjunctive)
Third conditionals require pluperfect subjunctive (hubiera), not pluperfect indicative (había).
Wrong participle form
Si hubiera escribido
Si hubiera escrito
Remember irregular participles: escribir → escrito, not *escribido.
Mixing hubiera and hubiese forms incorrectly
Si hubiera sabido, hubiese venido
Si hubiera sabido, habría venido
While hubiera and hubiese are interchangeable, the 'would have' part uses conditional perfect (habría), not pluperfect subjunctive.

Quick Test
1. How do you say 'If I had known, I would have come'?
2. Complete: 'Ojalá ___ estudiado más' (I wish I had studied more)
3. Which is correct for 'If you had arrived, you would have seen it'?
4. What does 'Como si hubiera estado allí' mean?
5. Choose the correct form for 'we' (nosotros): 'had spoken' (hypothetical)
6. Complete: 'Dudaba que ___ terminado' (I doubted they had finished)
7. Which form is 'you had seen' in pluperfect subjunctive?
8. Identify the error: 'Si habría sabido, habría venido'
Want more in-depth practice? Try our interactive fill-in-the-blank exercises with progressive lessons covering WEIRDO triggers, regular and irregular verbs!
