Question

I am a boy.
Change the sentence into passive voice.

Answer 1

This sentence not change in passive....

Answer 2

Explanation:

The above sentence is declarative. So it is not possible to change it in the passive voice. Here is a declaration that was given by someone.  

Actually, voice is the way in which the action is performed by the subject. It declares that the subject performs a particular action. Here in the sentence, not any action is being performed by the boy.

He is saying that he is a boy who shows a declaration or statement. According to this, the conversion is not required.