Question

Your attitude shocked me passive voice

Answer 1

I was shocked by you.

Answer 2

I was shocked at your attitude.

Explanation:

As here any person is not a subject. We have to use At insted of By which we normally use while converting active voice into passive voice. Follow all other rules

Active voice past indefinite - Subject + verb 2nd form+object.

Passive voice - Object +was or were + verb 3rd form + by or at or to + subject.