Quick facts — the four German cases
German has four cases (Kasus / Fälle): Nominativ, Akkusativ, Dativ, Genitiv. Each one marks the role a noun plays in a sentence. Articles (der, ein, mein), adjectives, and some pronouns change their endings to show the case. The case is decided by the verb, the preposition, or the noun's grammatical role — not by meaning alone.
Why Cases Exist
English marks sentence roles mostly with word order: "The dog sees the man" vs "The man sees the dog." German marks them with case endings and word order, which is why German word order can move around more freely than English. The case system is the grammar that lets German say who did what to whom without relying on position alone.
Once you stop translating word-for-word and start thinking in roles — "this noun is the subject, so it's nominative; this one is the receiver, so it's dative" — the cases stop feeling arbitrary. They are a role-labelling system, and every trigger is a role assignment.
1. Nominativ — the subject case
The nominative marks the subject of the sentence — the noun doing the action. It is also the case used after the verbs sein (to be), werden (to become), and bleiben (to remain), which take a "predicate nominative" rather than an object.
Der Lehrer erklärt die Grammatik.
The teacher explains the grammar. [der Lehrer = subject = nominative]
Er ist ein guter Lehrer.
He is a good teacher. [ein guter Lehrer = predicate after sein = nominative]
The question that identifies the nominative: Wer oder was? (Who or what?) — who is doing the action?
2. Akkusativ — the direct object
The accusative marks the direct object — the noun directly affected by the action. It is also the case required after a small set of prepositions and by many verbs.
Der Lehrer erklärt die Grammatik.
The teacher explains the grammar. [die Grammatik = direct object = accusative]
The question that identifies the accusative: Wen oder was? (Whom or what?) — what is being acted upon?
Accusative-only prepositions
Five prepositions always take the accusative. The common mnemonic covers them: durch, für, gegen, ohne, um. After any of these, the article shifts to its accusative form.
3. Dativ — the indirect object
The dative marks the indirect object — the recipient or beneficiary of an action. It is also required after a larger set of prepositions and by a group of verbs that always take a dative object (even with no accusative object present).
Ich gebe dem Kind das Buch.
I give the child the book. [dem Kind = recipient = dative; das Buch = direct object = accusative]
The question that identifies the dative: Wem? (To whom? For whom?) — who is receiving or benefiting?
Dative-only prepositions
Verbs that always take the dative
Some verbs govern the dative even though there is no obvious "recipient." These must be learned. The highest-frequency ones: helfen (to help), danken (to thank), gefallen (to please), gehören (to belong to), antworten (to answer), folgen (to follow), schmecken (to taste good to).
Das Kleid gefällt meiner Schwester.
The dress pleases my sister. [meiner Schwester = dative, because gefallen takes dative]
4. Genitiv — possession
The genitive marks possession and relationships of belonging. In everyday spoken German it is increasingly replaced by von + dative (das Auto von meinem Vater instead of das Auto meines Vaters), but it remains required in formal writing and is rewarded in exams.
Das Auto meines Vaters ist neu.
My father's car is new. [meines Vaters = possession = genitive]
Genitive prepositions
Genitive: where to use it, where to skip it
Use the genitive in formal writing, exams, and fixed expressions (wegen des Wetters). In casual speech, von + dative is acceptable and natural. In Goethe B2 and IB writing, accurate genitive use contributes to the language-range criteria — but a forced genitive used wrongly costs more than a clean von + dative.
The Definite and Indefinite Article Tables
These two tables are the single most useful reference for German cases. Memorise the definite article table first; the indefinite and possessive articles follow the same pattern with ein/kein/mein in front.
Definite articles (der, die, das, die)
Note the two changes that catch learners: masculine accusative (der → den) and the plural dative (die → den, with an -n added to the noun if it does not already end in -n). Genitive masculine and neuter add -s to the noun (des Mannes, des Kindes).
Indefinite and possessive articles (ein, kein, mein...)
Possessive articles follow the ein-words
mein, dein, sein, ihr, unser, euer, ihr/Ihr decline exactly like kein. So "with my father" is mit meinem Vater (dative masculine = meinem), and "for your sister" is für deine Schwester (accusative feminine = deine). Learn the ein-table once and you have learned all possessives too.
The Two-Way Prepositions (Wechselpräpositionen)
Nine prepositions take the accusative or the dative depending on the meaning: an, auf, hinter, in, neben, über, unter, vor, zwischen. The rule is about motion vs location.
Ich lege das Buch auf den Tisch.
I put the book onto the table. [Wohin? → motion → accusative (den Tisch)]
Das Buch liegt auf dem Tisch.
The book is lying on the table. [Wo? → location → dative (dem Tisch)]
The Wohin / Wo test
Ask the question yourself. If you can answer it with Wohin? (where to / toward) the verb expresses motion, use accusative. If the question is Wo? (where / at) the verb expresses position, use dative. Verbs like legen, stellen, setzen, hängen (to put) imply motion; verbs like liegen, stehen, sitzen, hängen (to be located) imply position.
Adjective Endings (the hard part)
Adjective endings depend on the case, the gender, and whether an article precedes the adjective. There are three declension types — strong (no article), weak (definite article), and mixed (indefinite article) — and most learners find adjective endings the hardest part of German grammar.
The pragmatic approach: do not memorise all three tables cold. Learn the rule of thumb that handles the majority of cases — when a definite article is present (der-words), the article already shows the case clearly, so the adjective takes the weak endings (-e or -en). When there is no article, the adjective carries the case marking and takes strong endings.
Where adjective endings cost marks
In Goethe, IB, and IGCSE writing, wrong adjective endings are one of the most common errors that pulls an otherwise good answer out of the top band. They are low-stakes individually — a reader still understands — but they accumulate and signal weak grammatical control. Use the Lingaso Writing Analyser on practice paragraphs to catch systematic adjective-ending errors before the exam.
Cases in Goethe, IB and IGCSE
Case accuracy is tested directly and indirectly across every German exam. In writing and speaking, it is part of the language-range and accuracy criteria; in reading and listening, recognising case endings helps you parse who did what in a sentence.
FAQ
Do I really need the genitive?
For speaking and basic exams (Goethe A1–B1), no — von + dative is acceptable and natural. For formal writing, Goethe B2, IB, and A-Level, yes — accurate genitive use is rewarded as part of grammatical range. Learn it as a formal-writing skill rather than an everyday-speaking skill.
What is the fastest way to learn the cases?
Learn the four questions (Wer? Wen? Wem? Wessen?) and the two article tables (definite and indefinite). Then practise with a small set of high-frequency verbs and prepositions rather than memorising every declension table at once. Most real German uses the same two dozen triggers repeatedly.
Why does German keep cases when English dropped them?
German kept the case system because it lets word order be flexible for emphasis and style. English compensated with strict word order. Neither is better — but it means you cannot rely on position to find the subject in German the way you do in English. The case endings do that work instead.