Step 2: figure out the Doer: locate the “by” phrase (agent) within the passive voice sentence to establish the doer of the action. Be aware that often the doer is not explicitly talked about.
Sentence-by-sentence, https://blakeberg766726.aboutyoublog.com/29714806/the-single-best-strategy-to-use-for-english-grammar-active-and-passive-voice-grammar-jee-neet-class-9-and-10