ajast

In a sentence

• Olen oodanud siin juba hommikust ajast.

  I have been waiting here since morning time.

  Here, 'ajast' is used to denote a specific point in time (morning) from which an action (waiting) has been continuing. It conveys the starting point of an ongoing action.

• Ajast, kui ta lahkus, on kõik muutunud.

  Since the time he left, everything has changed.

  In this sentence, 'ajast' is indicative of the point in time (when he left) marking the beginning of significant changes.

• See lugu on pärit antiikajast.

  This story originates from ancient times.

  'Ajast' is utilized here to refer to a historical period, specifically the ancient era, from which the story derives its origin.