An Example to a passive voice is,
"The bill was passed by the government on Friday."
Explanation: To understand Passive Voice it is essential to know the Active voice. Both the voices are interlinked to each other.
Active voice is a statement or sentence that is said directly to the speaker. Passive voice is the past sentence that required the slight change in the sentence.
Active voice = Subject + Verb + object
Example : The government passed the bill on Friday.
Passive Voice = Object + (past-tense)Verb + By +Subject
Example : The bill was passed by the government on Friday.