Learn Hardcore German: Für die Postkarte kaufe ich eine schöne Briefmarke.

In German all nouns—regardless of their position in the sentence—are always written with an initial capital letter. This rule applies to Postkarte, Briefmarke, and any other noun.

What case is die Postkarte in, and why?

Postkarte appears after the preposition für, which always takes the accusative case. Therefore, die Postkarte is accusative singular feminine. You can tell because the definite article for feminine singular remains die in both nominative and accusative.

Why does the verb come before the subject, giving kaufe ich?

German main clauses follow verb-second (V2) word order. When a phrase like Für die Postkarte occupies the first position, the conjugated verb kaufe must be in the second position, so the subject ich moves to third position: Für die Postkarte kaufe ich....

What type of object is eine schöne Briefmarke, and how do we know its case?

eine schöne Briefmarke is the direct object (accusative object) of the verb kaufen. Since Briefmarke is feminine singular in the accusative, the indefinite article remains eine. The adjective schöne then takes the weak ending -e (feminine singular accusative).

Why does the adjective schöne end in -e here?

In German, adjective endings depend on gender, number, case, and the presence/type of article. After an indefinite article (eine) in the feminine singular accusative, adjectives adopt the weak ending -e, thus schöne.

Could I change the word order to Ich kaufe eine schöne Briefmarke für die Postkarte?

Yes. German allows flexible placement of prepositional phrases. Putting the subject first—Ich kaufe...—and moving the phrase für die Postkarte to the end is perfectly correct. The meaning remains the same, though the emphasis slightly shifts.

How many objects are in the sentence, and what distinguishes them?

There are two objects:
• A prepositional object: für die Postkarte (governed by für, accusative).
• A direct object: eine schöne Briefmarke (no preposition, accusative).
The prepositional object follows the case required by its preposition; the direct object follows the verb’s requirement for an accusative object.

What if I want to talk about multiple stamps? How would the ending change?

German has no plural form of the indefinite article, so you’d drop eine and say schöne Briefmarken (strong ending -e for plural accusative). If you use the definite article you’d say die schönen Briefmarken (weak ending -en after die).