o

In a sentence

• Hovorili sme o dovolenke.

  We spoke about the vacation.

  Here, 'o' is a preposition used to indicate the topic of discussion.

• Učím sa o histórii Slovenska.

  I am learning about the history of Slovakia.

  In this example, 'o' is used as a preposition denoting the subject of study or learning.

• Čítal som knihu o dobrodružstvách.

  I read a book about adventures.

  Here, 'o' functions similarly, introducing the theme or subject of the book.