In Spanish, the pluperfect subjunctive is used to express wishes, comments, feelings or doubt on actions that have already been completed or that will be completed in the future.

We use the pluperfect subjunctive in the dependent clause when the main clause is in one of the following tenses:

We use the pluperfect subjunctive:

1. In the dependent clause when the subjunctive action has already taken place 

• Me sorprendió que no hubieras venido a trabajar ayer
• No era extraño que hubiesen gastado todo el dinero

2. When an action could have taken place in the past but did not 

• Me encantaría si no hubiese llovido
• Estarían felices si los hubieras escuchado

3. In conditional clauses with If 

• Si hubieras estudiado, habrías pasado el examen.
• Habrían obtenido el cargo si se hubiesen preparado mejor.

The pluperfect subjunctive conjugation of model regular verbs (ar, er, ir) is: