Passive Voice of "Do you know her": What preposition should be used?

Question

When we put the following sentence into the passive voice, is the agent introduced by the preposition by, as it usually is with other verbs?

Active: Do you know her? 
  Passive : Is she known by you?

Misti · Answer

Another approach/thought :

He is known by me.
Suggest a more normal two-way relationship.
But it would sound awkward and unnatural to a native speaker.

He is known to me.
Suggests a two-way personal relationship.
It sounds like I know him in the sense that I know President Obama.

user85627 · Answer

Active: "Do you know her?"

Passive : "Is she known to you?"

"by you" is used for more active verbs, for example:

"Did you paint that picture?"

"Was that picture painted by you?"

Knowing or not knowing is not an action but a state (in this case of a relationship).

2 Answers