Questions & Answers about Ich atme frische Luft ein.
Why is ein placed at the end of the sentence instead of Ich einatme frische Luft?
Because einatmen is a separable‐prefix verb. In a main clause, the conjugated part (atme) occupies the second position and the prefix (ein) “detaches” and moves to the very end of the clause.
What exactly is a separable‐prefix verb, and how do I recognize one?
A separable‐prefix verb combines a base verb and a small prefix (e.g. ein-, aus-, mit-, zu-). In the infinitive they’re written together (e.g. einatmen). In main clauses, you conjugate the base verb and send the prefix to the end:
• Infinitive: einatmen (“to inhale”)
• Present: ich atme … ein
What is the difference between atmen and einatmen?
atmen simply means “to breathe” (inhale and exhale).
einatmen specifically means “to inhale” (to breathe in).
Conversely, ausatmen means “to exhale” (to breathe out).
What case is frische Luft in, and how can I tell?
It’s in the accusative case because it functions as the direct object of atmen/einatmen. You know it’s accusative here because the verb is acting upon frische Luft (you breathe in fresh air).