Easy as
Changing Active Voice to Passive Voice
1) Identify: the Subject (who/what
performs the action);
Verb (the action) AND its Tense;
Object
(who/what
"receives" the action).
2) Move: the object before the verb
(it
becomes the "subject" of the passive sentence);
the
subject
after the verb
(it becomes the "agent" in
the passive sentence);
Include the word "by" in front of the agent.
3) Add: a
form of the
auxiliary verb BE;
use the same tense as the main
verb was in the active sentence.
simple present: am/is/are
present progressive: am/is/are
being
simple past: was/were
past
progressive: was/were being
future w/going to: am/is/are
going to be
simple future: will be
present perfect: has/have been
past perfect: had been
future perfect: will have been
4) Change: the main verb into its PAST PARTICIPLE form.
Example:
Active Voice: A thief stole my new car last night.
subj. main V object
simple past
Passive Voice: My new car was stolen by a thief last night.
new subj. aux. V main V agent
"be" past participle