ēkas

In a sentence

• Ēkas logi ir jāmazgā.

  The windows of the buildings need to be cleaned.

  In this sentence, 'ēkas' is used in the genitive plural form to describe possession, referring to the windows belonging to the buildings.

• Mēs ejam pa ēkām pilnu ielu.

  We are walking down a street full of buildings.

  Here, 'ēkām' is in the dative plural form, indicating the relationship of the street being described by being filled with buildings.

• Šī ēka ir veca un vēsturiska.

  This building is old and historic.

  In this usage, 'ēka' is used in the nominative singular form to function as the subject of the sentence.