Active voice

  is

Auxiliar

  used

Verb

  in

Adposició

  a

Determinador

  clause

substantiu

  whose

Pronom

  subject

substantiu

  expresses

Verb

  the

Determinador

  main

Adjectiu

 verb's  agent

substantiu

.

Active voice is used in a clause whose subject expresses the main verb's agent.

Active voice is used in a clause whose subject expresses the main verb's agent.