Question

rewrite the sentence in passive voice without changing the meaning. my doctor informed me about a new antiseptic ointment. about a new antiseptic ointment by my doctor.

Explanation:

To change to passive voice, the object of the active - voice sentence ("me") becomes the subject, the verb is changed to a form of "be" + past participle ("was informed"), and the subject of the active - voice sentence ("My doctor") is introduced with "by".

Answer:

I was informed about a new antiseptic ointment by my doctor.