German cases explained for A1 to B1: what Nominativ, Akkusativ, Dativ, and Genitiv do, the article tables, and how to know which case to use.
If one topic decides whether your German sounds correct or shaky, it is the case system. Cases are where most A1 to B1 candidates quietly lose marks, because a single wrong article (dem instead of den) can flag a whole sentence as an error. The good news is that cases are a system, not a memory test. Once you see the job each case does and learn one article table, most of your choices become automatic. This guide breaks the four German cases down for A1 to B1, with worked examples you can copy.
What a case actually does
A case marks the role a noun plays in a sentence. English mostly shows this with word order: "the dog bites the man" and "the man bites the dog" mean different things only because of the order. German shows the role by changing the article (and sometimes the noun), which is why German word order can be more flexible. There are four cases, and each answers a different question.
| Case | Its job | Question word |
|---|---|---|
| Nominativ | The subject, who or what does the action | Wer? / Was? (Who? / What?) |
| Akkusativ | The direct object, who or what is affected | Wen? / Was? (Whom? / What?) |
| Dativ | The indirect object, to or for whom | Wem? (To whom?) |
| Genitiv | Possession, whose | Wessen? (Whose?) |
Take one sentence: Ich gebe dem Mann das Buch. (I give the man the book.) Ich is the subject (Nominativ), das Buch is the thing given (Akkusativ), and dem Mann is the person receiving it (Dativ). Three roles, three cases, one short sentence.
The one table to memorise: definite articles
If you learn nothing else, learn how der/die/das changes across the cases. Every other choice hangs off this grid.
| Case | Masculine | Feminine | Neuter | Plural |
|---|---|---|---|---|
| Nominativ | der | die | das | die |
| Akkusativ | den | die | das | die |
| Dativ | dem | der | dem | den (+n on the noun) |
| Genitiv | des (+s/es) | der | des (+s/es) | der |
Two patterns do most of the work. First, only the masculine article changes in the Akkusativ (der becomes den); feminine, neuter, and plural look identical to the Nominativ. Second, the Dativ is the one that reshapes almost everything, and in the Dativ plural the noun itself takes an extra -n (mit den Kindern, aus den Häusern). The indefinite article ein follows the same endings: ein/einen/einem/eines for masculine, eine/eine/einer/einer for feminine.
Nominativ and Akkusativ: the first split
At A1 you mostly work with two cases. The Nominativ is the subject, and it is also what follows sein (to be): Das ist der Lehrer. The Akkusativ is the direct object, the thing the verb acts on.
- Der Mann liest. The man reads. (der Mann = subject, Nominativ)
- Ich sehe den Mann. I see the man. (den Mann = direct object, Akkusativ)
- Ich kaufe einen Apfel. I buy an apple. (masculine object, so ein becomes einen)
Because only the masculine changes, the single most useful habit at A1 to A2 is this: whenever a masculine noun is the object of the verb, switch der to den and ein to einen. Get that one move right and a large share of your early errors disappear. Some prepositions always trigger the Akkusativ too: durch, für, gegen, ohne, um.
Dativ: where it gets real
The Dativ is where most B1 candidates lose marks, so it is worth slowing down. It marks the indirect object, usually the person who receives or benefits. In Ich schreibe meinem Bruder eine E-Mail (I write my brother an email), the email is the direct object (Akkusativ) and the brother is the recipient (Dativ).
The Dativ shows up in three predictable places, and knowing them means you rarely have to guess:
- After Dativ verbs. A fixed group of verbs takes a Dativ object: helfen, danken, gefallen, gehören, antworten, folgen. So it is Ich helfe dem Kind, never das Kind.
- After Dativ prepositions. These always take the Dativ: aus, bei, mit, nach, seit, von, zu. For example mit dem Bus, bei der Arbeit, zu dem Arzt (usually shortened to zum Arzt).
- The personal pronouns change too. ich becomes mir, du becomes dir, er becomes ihm, sie becomes ihr, wir becomes uns, sie (they) becomes ihnen. So Das gefällt mir means I like it.
The two-way prepositions (Wechselpräpositionen)
Nine prepositions can take either the Akkusativ or the Dativ: an, auf, hinter, in, neben, über, unter, vor, zwischen. The rule is about movement, not vocabulary. If there is movement toward a place (answer to wohin?), use the Akkusativ. If it describes a fixed location (answer to wo?), use the Dativ.
- Ich gehe in die Schule. I go into the school. (movement, Akkusativ)
- Ich bin in der Schule. I am in the school. (location, Dativ)
When a candidate mixes these up, it is almost always because they reached for the vocabulary instead of asking "is something moving or staying?" Ask that question every time and the choice is clear.
Genitiv: the lightest touch at this level
The Genitiv shows possession and answers wessen? (whose). It is the least frequent case in everyday speech, and at A1 to B1 you mainly need to recognise it and use a few set phrases. The masculine and neuter articles become des, and the noun adds -s or -es: das Auto des Mannes (the man's car), das Dach des Hauses (the roof of the house). In spoken German, people often replace it with von plus the Dativ (das Auto von dem Mann), which is fine in conversation but less formal in writing. A handful of prepositions take the Genitiv, most usefully wegen (because of), trotz (despite), and während (during).
How to actually know which case to use
You do not choose cases by feel. Run a short mental checklist in this order, and it resolves nearly every sentence:
- Is there a preposition? If yes, the preposition decides. Learn them in groups: durch/für/gegen/ohne/um take Akkusativ, aus/bei/mit/nach/seit/von/zu take Dativ, and the two-way group depends on movement.
- Is it a Dativ verb such as helfen or gefallen? If yes, its object is Dativ.
- Who does the action? That is the Nominativ subject.
- What or whom does the verb act on? Direct object is Akkusativ; a recipient is Dativ.
Watch it work on one sentence: Nach der Schule gibt der Lehrer den Schülern die Hausaufgaben. (After school, the teacher gives the students the homework.) Nach forces the Dativ, so der Schule. Der Lehrer does the giving, so Nominativ. Die Hausaufgaben is what is given, so Akkusativ. Den Schülern is the recipient, so Dativ plural with its extra -n. Four decisions, all made by rule, none by guessing.
Cases are also the fastest way to raise your writing score, because examiners notice article and ending errors immediately. If you are building toward an exam, the Goethe B1 exam guide shows where these structures are tested, and the Schreiben writing guide explains how accuracy is marked. For the reading and vocabulary that cases sit inside, start early at A1 and build up. The best way to make the rules automatic is short, daily practice: work through targeted case drills using the free grammar tools below rather than only reading tables.
Frequently asked questions
Not heavily. At B1 you should recognise the Genitiv and handle common phrases with wegen, trotz, and während, plus simple possessives like das Ende des Films. Full active command of the Genitiv is a B2 expectation. Spend your energy on the Dativ first, since it appears constantly and carries more marks.
In the Dativ plural, the article is den and the noun takes an extra -n if it does not already end in one: die Kinder becomes mit den Kindern, die Häuser becomes aus den Häusern. It is a fixed pattern with almost no exceptions, so treat it as one automatic step whenever you have a plural noun in the Dativ.
Learn the definite article table cold, then learn prepositions in their case groups rather than one by one. After that, most errors come from not checking, not from not knowing. Reserve the last minutes of any writing task to scan your articles and endings, and ask of each object noun: subject, direct object, or recipient? That one habit catches the majority of case slips.
The Nominativ. Verbs like sein (to be), werden (to become), and bleiben (to remain) are linking verbs, so the noun after them stays in the Nominativ, not the Akkusativ: Er ist ein guter Lehrer, not einen guten Lehrer. This trips up learners who assume anything after the verb must be an object.
