1469. In the active voice, the subject is represented as performing the
action of the verb.
1470. By action is meant the operation of any verb, whether active or
passive, and whether used intransitively or transitively.
1471. The active of one verb sometimes serves as the passive of another:
thus, #pereō#, _go to destruction_, _die_, serves as the passive of
#perdō#, _destroy_, and #vēneō#, _go to sale_, _am sold_, as the passive
of #vēndō#, _put for sale_, _sell_. Similarly #fīō#, _become_, _get to
be_, _am made_, is used in the present system as the passive of #faciō#,
_make_ (788).