In den Turnschuhen laufe ich später nach Hause.

in

Breakdown of In den Turnschuhen laufe ich später nach Hause.

• das Haus: the house
• ich: I
• nach: to

Questions & Answers about In den Turnschuhen laufe ich später nach Hause.

Why does the verb come before the subject in laufe ich?

German main clauses are verb-second: one element comes first (here, the fronted phrase In den Turnschuhen), the finite verb is second (laufe), and the subject follows (ich). Without fronting, you could say: Ich laufe später in den Turnschuhen nach Hause.

Why is it in den Turnschuhen and not in die Turnschuhe?

In is a two-way preposition. It takes:

• dative for location/state (where?): in den Turnschuhen = in the sneakers (wearing them)
• accusative for motion into (where to?): in die Turnschuhe = into the sneakers (putting them on)

Here it describes the state while moving home, so it’s dative.

What’s the role of the ending -en in Turnschuhen?

That’s the dative plural ending. Dative plural requires:

• article: den
• noun: add -n if possible → Turnschuhe → Turnschuhen

Isn’t den masculine accusative? How do I know this is dative plural?

Yes, den can be masculine accusative singular or dative plural. The noun ending -en on Turnschuhen shows it’s dative plural here.

What does mean in practice—am I wearing them?