sūnus

In a sentence

• Mano sūnus eina į mokyklą.

  My son goes to school.

  Here, 'sūnus' is in the nominative case, indicating the subject of the sentence.

• Aš myliu savo sūnų.

  I love my son.

  Here, 'sūnų' is in the accusative case, serving as the direct object of the verb.

• Mes kalbame apie sūnų.

  We are talking about the son.

  Here, 'sūnų' is in the accusative case, which is often used in conjunction with prepositions like 'apie'.