Nachdem ich gegessen hatte, bin ich ins Kino gegangen.
English: After I had eaten, I went to the cinema.
The Plusquamperfekt is a German past tense used to talk about actions that happened before another action in the past.
Use the Plusquamperfekt to describe something that had already happened before another event in the past. It often appears with the Präteritum or Perfekt to show which action happened first.
Nachdem ich gegessen hatte, bin ich ins Kino gegangen.
English: After I had eaten, I went to the cinema.
Sie hatte das Buch gelesen, bevor der Unterricht begann.
English: She had read the book before the class began.
Wir waren schon gegangen, als er ankam.
English: We had already left when he arrived.
Du hattest deinen Schlüssel verloren.
English: You had lost your key.