sad

In a sentence

• Sad idem u trgovinu.

  Now I am going to the store.

  Here 'sad' is used as an adverb meaning 'now', referencing the current time.

• Bio sam tužan, ali sad sam sretan.

  I was sad, but now I am happy.

  In this sentence, 'sad' again functions as an adverb meaning 'now', to indicate a change in emotional state.

• Sad ti je jasno što se dogodilo.

  Now it is clear to you what happened.

  Again, 'sad' is an adverb meaning 'now', used to show the current understanding or realization of the situation.