The structure of active voice is sub + helping verb + object
for ex I am a fan of SRK
the structure of passive voice is object + helping verb + sub
for ex this pencil is mine.
it is my pen = this pen is mine
I have draw this = it is drawn by me

hope this help....

Understanding Active and Passive Voice
Active voice emphasizes the subject performing the action, while passive voice highlights the action being performed on the subject. Converting from active to passive voice shifts this focus.
Steps to Convert Active Voice to Passive Voice
1. Identify the Subject, Verb, and Object
- In an active sentence, the structure is usually: Subject + Verb + Object.
- Example: "The cat (Subject) chased (Verb) the mouse (Object)."
2. Move the Object to the Subject Position
- The object of the active sentence becomes the subject of the passive sentence.
- Example: "The mouse" will now be the subject.
3. Use the Correct Form of the Verb "To Be"
- Choose the appropriate form of "to be" that matches the tense of the original verb.
- Example: If the original verb is "chased" (past tense), use "was" or "were".
4. Change the Main Verb to the Past Participle
- Convert the main verb to its past participle form.
- Example: "Chased" becomes "chased".
5. Add the Original Subject with "By" (Optional)
- The original subject can be included at the end of the sentence using "by."
- Example: "The mouse was chased by the cat."
Example Conversion
- Active Voice: "The chef (Subject) prepared (Verb) the meal (Object)."
- Passive Voice: "The meal (New Subject) was prepared (Verb) by the chef (Optional Agent)."
Key Points to Remember
- Always maintain the original meaning.
- Ensure verb tenses align correctly.
- Passive voice is useful for emphasizing the action or when the doer is unknown or irrelevant.
This structured approach will help in effectively converting sentences from active to passive voice.