Passive: Perfekt, Plusquamperfekt and Zustandspassiv
You have learned the passive in the Präsens and Präteritum (wird gebaut, wurde gebaut). The Perfekt form is also very common in the news and formal texts: 'Das Museum ist renoviert worden.' There is also a second passive structure that describes the result of a process, i.e. a state: 'Die Tür ist geschlossen.' (The door is closed.) This topic covers both, plus the verbs that cannot be made passive.
INTRODUCTION
You have learned the passive in the Präsens and Präteritum (wird gebaut, wurde gebaut). The Perfekt form is also very common in the news and formal texts: 'Das Museum ist renoviert worden.' There is also a second passive structure that describes the result of a process, i.e. a state: 'Die Tür ist geschlossen.' (The door is closed.) This topic covers both, plus the verbs that cannot be made passive.