German changes the little words around a noun depending on the job that noun does in the sentence. That system is called case, and once you see the pattern, forms like den, dem, and der stop looking random.
How it works
The core rule is simple: the case shows the function of a noun phrase, not its meaning. Find the verb first, then ask for each part with a question word.
- Nominative is the subject, the doer. Question: wer or was, who or what.
- Accusative is in most sentences the direct object, the target. Question: wen or was, whom or what.
- Dative is often the receiver, the person something is given to or done for. Question: wem, to whom or for whom.
- Genitive shows belonging, as in the end of the day. Question: wessen, whose. It is common in writing and fixed phrases.
Tip: Learn each new verb together with its case. Most transitive verbs take the accusative, but some like helfen, danken, and gefallen always take the dative.
Prepositions also control case. Prepositions such as mit, nach, bei, and zu always take the dative, while für, ohne, and gegen always take the accusative. Two-way prepositions take the dative for location and the accusative for motion.
Examples
- Der Mann schläft. — (The man is sleeping.)
- Die Frau sieht den Hund. — (The woman sees the dog.)
- Ich gebe dem Kind einen Apfel. — (I give the child an apple.)
- Sie hilft dem Bruder bei den Hausaufgaben. — (She helps the brother with the homework.)
- Wir wohnen bei den Eltern meiner Freundin. — (We live with the parents of my girlfriend.)
- Trotz des Regens geht er zu Fuß zur Arbeit. — (Despite the rain he walks to work.)
- Er legt das Buch auf den Tisch. — (He puts the book onto the table.)
Note: The last two examples use a preposition that forces the case. Recognition matters more than production at first, so focus on spotting trotz with genitive and motion with accusative.
Forms at a glance
Articles show case most clearly. Noun endings change little, so watch the article.
- Masculine, as in Mann:
- Nominative: der Mann — (the man)
- Accusative: den Mann — (the man, as object)
- Dative: dem Mann — (to the man)
- Genitive: des Mannes — (of the man)
- Feminine, as in Frau:
- Nominative: die Frau — (the woman)
- Accusative: die Frau — (the woman, as object)
- Dative: der Frau — (to the woman)
- Genitive: der Frau — (of the woman)
- Neuter, as in Kind:
- Nominative: das Kind — (the child)
- Accusative: das Kind — (the child, as object)
- Dative: dem Kind — (to the child)
- Genitive: des Kindes — (of the child)
- Plural, as in Kinder:
- Nominative: die Kinder — (the children)
- Accusative: die Kinder — (the children, as object)
- Dative: den Kindern — (to the children)
- Genitive: der Kinder — (of the children)
Watch out: Dative plural adds n whenever possible, as in Kindern, Eltern, and Freunden. If the plural already ends in n or s, nothing is added, as in Frauen or Autos.
Indefinite articles follow the same pattern with ein forms: ein Mann, einen Mann, einem Mann, eines Mannes, and for feminine eine Frau and einer Frau. Later material adds weak noun endings and adjective endings, which build on this overview.
Common mistakes
- Not Ich helfe den Hund — correct: Ich helfe dem Hund. — (The verb helfen needs the dative, not the accusative.)
- Not Sie gibt das Buch den Kind — correct: Sie gibt das Buch dem Kind. — (Neuter dative uses dem, not den.)
- Not Mit den Auto fahren wir — correct: Mit dem Auto fahren wir. — (We drive with the car. Mit always takes the dative.)
- Not Die Tasche von der Lehrer gehört mir — correct: Die Tasche des Lehrers gehört mir. — (The bag of the teacher belongs to me. Masculine genitive adds s and uses des in writing.)
Common mistake: Using the nominative after für, ohne, or gegen. These prepositions always take the accusative, even when English uses to or for.
Where to go next
Case becomes much easier once articles and gender feel automatic. Continue with Articles for full declension, Nouns and Gender for der die das patterns, and Prepositions for which preposition forces which case.