començat

In a sentence

• He començat a llegir un nou llibre.

  I have started reading a new book.

  In this sentence, 'començat' is a past participle used with the auxiliary verb 'he' to form the present perfect tense, indicating an action that started recently.

• Aquest projecte està començat, però encara no està complet.

  This project is started but not yet completed.

  Here, 'començat' functions as an adjective describing the state of 'projecte,' meaning it is initiated but unfinished.

• Quan vaig passar per aquí, encara no havien començat la reunió.

  When I passed by here, they hadn't started the meeting yet.

  In this example, 'començat' is part of the pluperfect (past perfect) tense, combined with the auxiliary verb 'havia' in the negative and expressing an action that had not occurred by a past moment.