El Pretérito Pluscuamperfecto de Subjuntivo

Spanish Pluperfect Subjunctive

El Pretérito Pluscuamperfecto de Subjuntivo also known as El Antepretérito

El Pretérito Pluscuamperfecto de Subjuntivo is often used to express actions that hypothetically might have taken place in the past under other circumstances.

El Pretérito Pluscuamperfecto de Subjuntivo is formed using: 

Look at these examples:

Ellos hubiesen venido.They would have come.

Ella hubiera venido.She would have come.

See also: Spanish Past Tenses and All Spanish Tenses

I'll be right with you...