Question

Sir,do you want a servant?(voice change)

Answer 1

IS A SERVENT WANTED BY YOU?

Answer 2

The answer is: Sir, is a servant needed by you? Here from active voice, the sentence is changed into the passive voice and it is a good read, it is grammatically correct with the same meaning as the original sentence.

Here the object servant is made the subject of the converted sentence, and the word “you” is used as object.