Subjuntivo Pretérito Pluscuamperfecto

The subjuntivo is a form that we don't have in English. This form is a special feature of the Romance languages ​​and thus also of Spanish. The biggest challenge with the subjunctive is always knowing whether to use the subjunctive or the indicative. In general, we use the indicativo for facts and real things.

The subjuntivo pretérito pluscuamperfecto, on the other hand, is used to express a completed action that took place in the past before another action. For example, express a wish (which is mostly introduced with some signal words like e.g. ojalá), but also show your own feelings (mostly introduced with verbs like gustar, encantar, detestar etc. ). We also use this form to express doubt and uncertainty (like no creo que vaya al restaurante).
But some conjunctions introduce the subjunctive, such as the conjunctions of time (these include hasta que, cuando, etc.)

For the formation of the Subjuntivos préterito pluscuamperfecto we use the Subjuntivo Pretérito Imperfecto of the auxiliary verb Haber and the participle form of the verb (hablado/aprendido/vivido).