Relativsätze &
Genitiv.

A relative clause takes two sentences and welds them together at a shared noun. You pick that noun out of sentence A (call it the antecedent), then attach sentence B as a description, using a relative pronoun that points back to it. In German the price you pay is the usual one: you set the clause off with commas and the verb goes to the end.

That sentence is the whole skill. The pronoun (der, die, das, dem, den, deren…) gets its gender and number from the noun you're describing — but its case from how it functions inside the relative clause. Two parents, one child.

Compare with the definite article and you see the trick: nominative and accusative look identical to der/die/das, with one exception — accusative masculine is den, just like the article. The dative plural changes shape: it's denen, not den. And the genitive replaces des/der with dessen / deren — the four forms that learners have to actively memorize.

Always think in two steps. Step one: look at the noun being described — that gives you gender (m / f / n) and number (singular or plural). Step two: ignore the outer sentence and look only at the relative clause — what role does the pronoun play there? Subject? Direct object? Indirect object? Possessor? That tells you the case.

The four core patterns, side by side

Dative relatives feel harder than they are. The pronoun (dem / der / dem / denen) signals that the noun is on the receiving end of a transfer — being helped, given to, sent to, thanked. The hardest part is remembering that the dative plural is not den; it's denen, with the extra -en.

This is where German splits from English. English drops prepositions to the end of the clause ("the man I talked to"). German absolutely cannot — the preposition has to ride at the front of the relative clause, right before the pronoun. The case of the pronoun is then determined by the preposition's case-government, not by the verb.

The wo- / wor- shortcut

When the antecedent is a thing (not a person), German offers a shortcut: collapse "preposition + relative pronoun" into a single word starting with wo- or wor- (when the preposition begins with a vowel). Common with: womit, wovon, woran, worüber, worauf, wofür…

Crucial: the wo- shortcut is only for things and abstract concepts, never for people. With a human antecedent, keep the full preposition + pronoun form.

Use dessen for masculine and neuter antecedents, deren for feminine and plural. They mean "whose" — and they sit at the front of the relative clause, directly attached to the noun they possess. Critically: dessen / deren replace the article — they don't sit alongside it. "dessen das Buch" is wrong.

What about the noun after dessen / deren?

The possessed noun behaves like a "bare" noun — no article — and adjectives in front of it take the strong ending (the one that signals case + gender on its own, since there's no article to do that job). At B2, you don't need to think much about this: just leave out the article and pick the adjective ending you'd use after no article at all.

dessen + preposition

When the possessed thing is governed by a preposition, the preposition still leads. dessen / deren stays right behind it, attached to its noun.

The genitive shows possession or close relationship between two nouns. Das Buch meines Vaters. Die Tasche der Frau. It's a single word relationship in German — no separate preposition like English's "of." In speech, especially in the south, people often replace genitive with von + Dativ; in writing and formal speech, the genitive is alive and well.

The two endings to remember

The genitive in action

A small but useful group of German prepositions takes the genitive — they immediately bump up the register of any sentence you put them in. In casual speech (and in some regional dialects) you'll sometimes hear them with the dative; in writing and on the B2 exam, use the genitive.

More genitive prepositions, by frequency