Voice of Past Continuous Tense

Rules-

Sentence
Structure of making Past  Continuous Tense (Active Voice)
Structure of converting Past  Continuous Tense (Active Voice) to Passive Voice
Positive
Sub + Was/Were + Verb(1st Form)-ing + Object + Extra Words.
Obj/Sub +Was/Were + Being + Verb (3rd form) + By + Sub/Obj +  Extra Words.
Negative
Sub + Was/Were + Not +  Verb(1st Form)-ing + Object + Extra Words.
Obj/Sub +Was/Were + Not + Being + Verb (3rd form) + By + Sub/Obj +  Extra Words.
Interrogative
Was/Were + Sub + Verb(1st Form)-ing + Object + Extra Words?
Was/Were + Obj/Sub + Being + Verb (3rd form) + By + Sub/Obj +  Extra Words?
Voice of Past Continuous Tense
Voice of Past Continuous Tense

Examples -

Active Voice
Passive Voice
He was eating a mango.
A mango was being eaten by him.
He was watching them.
They were being watched by him.
She was vexing me.
I was being vexed by her.
They were killing animals.
Animals were being killed by them.
She was supporting me.
I was being supported by her.