Personal pronouns in the accusative

Wo ist der Schlüssel von Yaras Geschäft? – Er ist bei Max und Tarek.

Haben Max und Tarek den Schlüssel von Yaras Geschäft? – Ja, sie haben ihn.

Every noun can be substituted with a pronoun. The personal pronoun can represent a person or thing. Every pronoun can take the nominative or any of the other cases. For example, when a personal pronoun comes after a preposition or a verb that takes the accusative, it will also be in the accusative.

Most personal pronouns in the accusative have a different form from the nominative, but some stay the same.