“Passiv” means, that the same actual situation is described from another perspective.
On a semantic level you can decide: who is the “Agens” (causer, cause), the “Patiens” (person concerned, effect) and the action (mostly the verb).
For the verb: we have a morphological category of the verb to express active or passive voice, that is the “Genus Verbi“. –> ask for the verbforms in my session.
You can transform a sentence from active voice into passive voice by replacing the subject, which in simple sentences is the “Agens”, with the object, which in simple sentences is the “Patiens”, so that in the end the Patiens is the subject.
More simple please~~~:
The object turns into the subject, the subject becomes the object. The verb changes its form. In that case, the basic (semantic) meaning stays the same.
Please also have a look at the verbforms in the sentences:
-> Ich habe sie eingeladen.
-> Ich bin eingeladen worden.
1. Which sentence is active voice, which passive voice?
2. Translate: Who invites whom?