apaguen

In a sentence

• Aquestes llums s'apaguen automàticament.

  These lights turn off automatically.

  Here, 'apaguen' is used in a reflexive form (s'apaguen) to indicate an action performed by the subject of the sentence.

• Quan arribin les deu, apaguen el televisor.

  When it gets to ten o'clock, they turn off the television.

  In this instance, 'apaguen' indicates an action performed actively by the subject ('they').

• Els focs artificials es apaguen ràpidament.

  The fireworks go out quickly.

  Here, 'apaguen' is used with 'els focs artificials' as the subject, indicating they cease emitting light or fire.