Questions & Answers about Bugün parkta koşasım var.
It’s the colloquial “desiderative” form that means “feel like V‑ing / have the urge to V.” Here, koş- (run) + -(y)AsI (desiderative) creates a noun meaning “desire to run.” The full predicate koşasım var literally means “there is my desire to run.”
- After a consonant: git → gidesi-
- After a vowel, add buffer y: ağla → ağlayası-
- Vowel harmony: back vowels → -ası, front vowels → -esi
It’s implicit in the possessive ending -m. You can make it explicit with a genitive possessor:
- Benim bugün parkta koşasım var. (Totally fine, just more explicit.) Usually, Turkish drops the genitive pronoun if the possessive ending is present.