The futuro perfecto de subjuntivo, the future perfect subjunctive, is one of the three perfect tenses of the subjunctive mood. It works the same way as the future perfect indicative but it follows the rules for the subjunctive.
The futuro perfecto de subjuntivo is formed by the auxiliar verb "haber" in the future imperfect subjunctive tense followed by the past participle of the main verb. The English equivalent of the futuro perfecto de subjuntivo could be, depending on the situation, the future perfect “will + have + past participle of the main verb”, the conditional perfect "would or could + have + past participle of the main verb” or, simply, a present or past tense when the sentence has a subjunctive nuance.
Quienes hubieren traspasado esa propiedad privada, serán perseguidos por la ley.
Those who trespass that private property will be prosecuted.
Si para las seis en punto no hubiere vuelto, no me esperéis.
If I haven’t come back by 6 o’clock, don’t wait for me.
The futuro perfecto de subjuntivo conjugation for regular verbs is:
The future perfecto de subjuntivo conjugation for irregular verbs is the same as for regular verbs. However, irregular verbs have irregular past participles. See a list of irregular past participles on The perfect tenses - the pretérito pluscuamperfecto part 1 lesson.
The futuro perfecto de subjuntivo is used to assert a future event that has already been completed in the future although that event would only take place and be completed if the previous future event has been fulfilled. It is used for unrealistic contingencies that have not happened nor necessarily have to happen.
Aquellos que hubieren comenzado altercados en la manifestación del próximo sábado serán juzgados.
Those who will start riots during the demonstration next Saturday will be trialed.
Necesitamos ver el certificado de nacimiento del país en donde usted hubiere nacido.
We need to see the birth certificate of the country where you were born.
Esa pastelería comenzará a hacer pasteles de la forma en la que los hubieren hecho nuestros abuelos.
That bakery will start making cakes the same way our grandparents would have made them.
El código penal se modificará para que los que hubieren conducido bajo los efectos del alcohol tengan penas más duras.
The penal code will be amended so those who drive under the influence of alcohol get tougher penalties.
The futuro perfecto de subjuntivo is formed by the auxiliar verb "haber" in the future imperfect subjunctive tense followed by the past participle of the main verb. The English equivalent of the futuro perfecto de subjuntivo could be, depending on the situation, the future perfect “will + have + past participle of the main verb”, the conditional perfect "would or could + have + past participle of the main verb” or, simply, a present or past tense when the sentence has a subjunctive nuance.
Quienes hubieren traspasado esa propiedad privada, serán perseguidos por la ley.
Those who trespass that private property will be prosecuted.
Si para las seis en punto no hubiere vuelto, no me esperéis.
If I haven’t come back by 6 o’clock, don’t wait for me.
The futuro perfecto de subjuntivo conjugation for regular verbs is:
Futuro Perfecto de Subjuntivo | CANTAR | BEBER | VIVIR |
| yo | hubiere cantado | hubiere bebido | hubiere vivido |
| tú | hubieres cantado | hubieres bebido | hubieres vivido |
| él, ella, usted | hubiere cantado | hubiere bebido | hubiere vivido |
| nosotros/as | hubiéremos cantado | hubiéremos bebido | hubiéremos vivido |
| vosotros/as | hubiereis cantado | hubiereis bebido | hubiereis vivido |
| ellos, ellas, ustedes | hubieren cantado | hubieren bebido | hubieren vivido |
The future perfecto de subjuntivo conjugation for irregular verbs is the same as for regular verbs. However, irregular verbs have irregular past participles. See a list of irregular past participles on The perfect tenses - the pretérito pluscuamperfecto part 1 lesson.
Uses of the Futuro Perfecto de Subjuntivo
The futuro perfecto de subjuntivo is often referred to as a “forgotten tense” since it is no longer used in every day conversations. Its uses have been merely restricted to literature and, especially, legal documents and laws. The present and past perfect subjunctive replace the future perfect subjunctive in most situations.The futuro perfecto de subjuntivo is used to assert a future event that has already been completed in the future although that event would only take place and be completed if the previous future event has been fulfilled. It is used for unrealistic contingencies that have not happened nor necessarily have to happen.
Aquellos que hubieren comenzado altercados en la manifestación del próximo sábado serán juzgados.
Those who will start riots during the demonstration next Saturday will be trialed.
Necesitamos ver el certificado de nacimiento del país en donde usted hubiere nacido.
We need to see the birth certificate of the country where you were born.
Esa pastelería comenzará a hacer pasteles de la forma en la que los hubieren hecho nuestros abuelos.
That bakery will start making cakes the same way our grandparents would have made them.
El código penal se modificará para que los que hubieren conducido bajo los efectos del alcohol tengan penas más duras.
The penal code will be amended so those who drive under the influence of alcohol get tougher penalties.