Questions & Answers about Dzieci biegają wesoło w parku.
Why is there no word for “the” or “a” in Dzieci biegają wesoło w parku?
Polish has no definite or indefinite articles like English the or a/an. Whether you mean “some children,” “the children,” or just “children in general,” you use the same form dzieci. Context or extra words (e.g. te dzieci “these children”) tell you how specific you are being.
Why is it w parku and not something like na parku or w park? What case is parku?
The preposition w (“in”) takes the locative case when it expresses location (“where?”). The locative singular of park (masculine inanimate) is parku. You cannot say na parku, because na + locative is used for certain surfaces or institutions (e.g. na stole “on the table,” na dworze “outdoors”), but a park is treated as an enclosed space, so it’s w parku.
What is the difference between biegają and biegną? Why use biegają here?