stadionie

In a sentence

• Byłem wczoraj na stadionie.

  I was at the stadium yesterday.

  Here, the word 'stadionie' is the locative case form of 'stadion', indicating the location where the action took place.

• Turniej odbył się na dużym stadionie w centrum miasta.

  The tournament took place in a large stadium in the city center.

  In this sentence, 'stadionie' is also in the locative case, specifying the setting of the event.

• Dzieci biegały po stadionie cały dzień.

  The children were running around the stadium all day.

  Here, 'stadionie' remains in the locative case, describing the area where the activity occurred.