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Questions & Answers about Chce mi się spać.
Why does this use chce mi się instead of just saying ja chcę spać?
Ja chcę spać simply means I want to sleep, like an active decision. Chce mi się spać is an impersonal expression that means I feel sleepy or the urge to sleep is happening to me. Polish uses this structure to talk about bodily urges, feelings, or a lack of motivation.
What exactly is the grammar structure happening here?
It uses the 3rd person singular verb chce (it wants), plus the reflexive pronoun się, plus the Dative case pronoun mi (to me). Literally, it translates to It wants itself to me to sleep. You will see this pattern often for things that feel out of your direct control.
Can I use this same structure with other verbs?
How would I change this to say He feels sleepy or She feels sleepy?
You only need to change the Dative pronoun mi to match the person. The rest of the sentence stays exactly the same. For he, the Dative pronoun is mu, making it Chce mu się spać. For she, use jej, making it Chce jej się spać.