Particle に in passive sentences? あいつから、例の本が彼女に渡された


From what I understand the particle に marks the doer in passive voice
sentences, but I found this one in a book:

> あいつから、例の本が彼女に渡された。

The に particle here as a "marking the doer" doesn't make any sense to me. Is
the meaning of に in passive sentences determined by the context?




It’s dependent on the verb.

In your example, 彼女に渡す is used in the passive form. In other words, に is more
strongly bound to the verb 渡す than to the passive construction.

If you need to add the agent (i.e. the doer of 渡す) in that sentence without
using から, you would most likely say:

> 例の本があいつ **によって** 彼女に渡された。

