oublié

In a sentence

• J'ai oublié mes clés à la maison.

  I forgot my keys at home.

  In this sentence, "oublié" is used in the past tense (compound past) to indicate an action that the subject performed—forgetting their keys: "J'ai oublié." The verb "oublier" means "to forget."

• Il semble que j'avais oublié de vous envoyer le fichier.

  It seems that I had forgotten to send you the file.

  Here, "oublié" is in the past tense (pluperfect), used to describe an action that was completed before another in the past: "j'avais oublié."

• Si j'avais su, je n'aurais pas oublié le rendez-vous.

  If I had known, I would not have forgotten the appointment.

  In this sentence, "oublié" is in the past conditional tense, indicating an outcome that would have occurred under different circumstances.