swoim

In a sentence

• Chciałbym porozmawiać z swoim przyjacielem.

  I would like to talk to my friend.

  In this sentence, 'swoim' is used to mean 'my own' and is in the instrumental case, as per the context of having a conversation with someone.

• Każdy student musi dbać o swoimi rzeczami.

  Each student must take care of their own things.

  Here, 'swoimi' is in the instrumental plural form, used to indicate the ownership of the items being referred to.

• Marek zawsze wraca do swojego domu na czas.

  Marek always returns to his home on time.

  In this instance, 'swojego' is in the genitive case, showing possession related to the home of Marek.