Breakdown of Ich kaufe den Katalog im Geschäft.
in
in
dem
the; (masculine or neuter, dative)
ich
I
kaufen
to buy
Questions & Answers about Ich kaufe den Katalog im Geschäft.
Why is it den Katalog instead of der Katalog, and can I say einen Katalog or drop the article?
In German, Katalog is a masculine noun (nominative der Katalog). When it’s the direct object of kaufen, it takes the accusative case, so the definite article changes to den. German normally requires an article or other determiner with singular, countable nouns, so you cannot drop it. If you want to say “a catalog,” use the masculine accusative indefinite article einen:
Ich kaufe einen Katalog im Geschäft.
What case is used in im Geschäft, and why is im used instead of in dem?
im is simply the contraction of in dem (in + dative). When in expresses a static location (where something happens), it governs the dative case. Hence dem Geschäft becomes im Geschäft.
Why not use ins Geschäft in this sentence?
ins is the contraction of in das, which puts Geschäft in the accusative case, implying movement into the store. Here, buying takes place inside the store (a location), not emphasizing going into it. For static location you need im (in + dative), not ins (in + accusative).
Can the adverbial phrase im Geschäft be placed somewhere else in the sentence?