1. Active Voice
A feature of sentences in which the subject performs the action of the verb and the
direct object is the goal or the recipient: The mechanic fixed the car.
Passive Voice
A feature of sentences in which the object or goal of the action functions as the
sentence subject and the main verb phrase includes the verb to be and the past
participle: The car was fixed by the mechanic.
Explain the basic rules for changing active voice into passive
form with examples
Present Indefinite Tense:
Change object into subject
Is, Are, Am
3rd form of verb
By
Objective form of subject
Active: I like mangoes.
Passive: Mangoes are liked by me.
Present Continuous Tense:
Change subject into object
Is, Are, Am
Being
Third form of verb
Objective from of subject
Active: He is helping his friend.
Passive: His friend is being helped by him
Present Perfect Tense:
Change object to subject
Has, have
Been
Third form of verb
By
Objective form of subject
Active: She has closed the door.
Passive: The door has been closed by her.
Past Indefinite Tense:
Change subject to object
Was, were
Third form of verb
By
Objective form of subject
Active: She bought a golden chain for herself.
Passive: A golden chain for herself was bought by her.
Past Continuous Tense:

2. Object subject
was, were
Being
Verb
By
Object form of subject.
Active: Was the dog chasing the cat?
Passive: Was the cat being chased by the dog?
Past Continuous Tense:
Object Subject
Had Been
Being
Verb
By
Object form of subject
Active: You had not helped me.
Passive: I had not been helped by you.
Present Perfect Continuous Tense:
Active: She has been reading these books since morning.
Passive: These books have been read by her since morning.
Past Perfect Continuous Tense:
Active: He had been reading this book since morning.
Passive: This book had been read by him since morning.
Future Indefinite Tense:
Object subject
Will, shall
Be
Verb
By
Object form of subject
Active: He will read a book.
Passive: A book will be read by him.
Future Continuous Tense:
Active: He will be reading a book.
Passive: A book will be read by him.
Future Perfect Tense:
Object subject
Will have been, shall have been
Verb
By
Object form of subject
Active: I shall have left this place.
Passive: This place will have left by me.
Future Perfect Continuous Tense:
Active: He will have been reading this book since morning.
Passive: This book will have been read by him.
IMPERATIVE SENTENCES
Let
Verb
Be
Verb
Active: Clean this room
Passive: Let the room be cleaned.

3. USE OF CAN, COULD, MAY, MIGHT, MUST
Object subject
Can, could, may, might, must
Be
Verb
By
Object form of subject
Active: I can read your handwriting.
Passive: Your handwriting can be read by me.