počeo

In a sentence

• Počeo je raditi jučer.

  He started working yesterday.

  In this sentence, 'počeo' is used to indicate the beginning of an action performed by a male subject, specifically the action of working.

• Počeo sam čitati novu knjigu.

  I started reading a new book.

  Here, 'počeo' is used in the first person singular form to express the initiation of the action of reading.

• Dječak je počeo plakati kad je pao.

  The boy started crying when he fell.

  The word 'počeo' denotes the beginning of the boy's crying as a reaction to falling.