Present Perfect Passive
Forming Present Perfect Passive
|Affirmative Form||Object + have / has + been + verb3 (past participle)|
|Question Form||Have / has + object + been + verb3 (past participle)|
Something has been done by someone at sometime up to now.
Active : They have cleaned the clinic.
Passive: The clinic has been cleaned by them.
Active : Thomas has written many books.
Passive: Many books have been written by Thomas.
Active : Have the police caught the man?
Passive: Has the man been caught by the police?
Active : UPS has delivered the letters.
Passive: The letters have been delivered by UPS.
Quick ExercisePut the following sentences into passive voice. (present perfect passive)