Plus-que-parfait:
It's used to describe an action in the past that occured before another one also in the past.
Avoir/être (imparfait) + participe passé
j'avais déjà répondu quand il est arrivé -> I had already answered when he arrived.
Quand il est arrivé, nous avions déjà mangé. -> when he arrived, we had already eaten.
Now it's your turn... ;-)
Andrés... (21)
Plus-que-parfait:
It's used to describe an action in the past that occured before another one also in the past.
Avoir/être (imparfait) + participe passé
j'avais déjà répondu quand il est arrivé -> I had already answered when he arrived.
Quand il est arrivé, nous avions déjà mangé. -> when he arrived, we had already eaten.
Now it's your turn... ;-)