Points For Changing Active into Passive Voice

Points To Be Kept In Mind For Changing Active into Passive Voice:

While changing Active Voice into Passive Voice, following points should be kept in mind.

• Divide the sentence into subject, verb and object. E.g. Ahmad (sub) speaks (verb) English (object).
•  Object of active sentence becomes subject of passive sentence e.g. English is spoken by Ahmad 
• A form of "be" must be used according to subject and tense of passive sentence e.g. English "is"
• Past participle form of verb must be used e.g. Englsh is "spoken"
• The subject of active sentence becomes the part of "by phrase" and passive sentence e.g. English is spoken "by Ahmad"...