Breakdown of Der Techniker bearbeitet heute das Dokument im Büro.
Questions & Answers about Der Techniker bearbeitet heute das Dokument im Büro.
Der Techniker is in the nominative case because it is the subject of the sentence – the person who is doing the action.
- der = nominative singular masculine
- den = accusative singular masculine (used for direct objects)
- dem = dative singular masculine (used mainly for indirect objects)
In this sentence:
- Wer bearbeitet das Dokument? (Who is editing the document?)
→ Der Techniker.
So you need the nominative form: der.
The noun Dokument is neuter in German, so its article in the dictionary form is das Dokument.
In the sentence it is the direct object (= the thing being worked on), so it is in the accusative case. For neuter nouns, nominative and accusative are the same:
- Nominative neuter: das Dokument
- Accusative neuter: das Dokument
That’s why you see das Dokument here, not dem Dokument (which would be dative).