The pluscuamperfect (more than perfect) is a preterite verbal time that indicates that the action has already ended but not only with regard to the present but in relation to another action or past situation; therefore refers us to two moments, both past with regard to the present. All this in mode of possibility, condition, desire, assumption or hypothesis, that is to say unreality, because it is the subjunctive mode. It is active with the imperfect subjunctive preterite of the verb haber and the participle of the verb in question and in passive with the subjunctive pluscuamperfect of the verb to be plus the participle of the verb in question.
