What is an example of passive without by?
Passive Voice without “By” Preposition By Digital English
Active: I know the man. Passive: The man is known to me. Here in the passive voice we normally use “By” a preposition before me. But we have written to preposition because the preposition “To” follows the verb “know”.
What is the passive voice without agents?
We particularly use the passive voice when we don't know or aren't bothered exactly who has done something. This is called passive without agent where the recipient of the action becomes the subject. We often use the passive to report what someone has said, but we want to avoid telling anyone who said it.