PRESENT PERFECT, PAST PERFECT and FUTURE PERFECT
Passive form:
have/has been + past participle
had been + past participle
Active: Present Perfect
I have mailed the gift.
Jack has mailed the gifts.
Passive: Present Perfect
The gift has been mailed by me.
The gifts have been mailed by Jack.
Active: Past Perfect
Steven Spielberg had directed the movie.
Penny Marshall had directed those movies.
Passive: Past Perfect
The movie had been directed by Steven Spielberg.
The movies had been directed by Penny Marshall.
Active: Future Perfect
John will have finished the project next month.
They will have finished the projects before then.
Passive: Future Perfect
The project will have been finished by next month.
The projects will have been finished before then.