A verb is in the active voice when the person or thing denoted by the subject is the doer of action ( that is subject acts or is active)
The hunter killed the tiger.
Sue changed the flat tire.
We are going to watch a movie tonight
Mom read the novel in one day
Tom painted the entire house
I will clean the house every Saturday
The science class viewed the comet
A verb in the passive voice when the person or thing denoted bythe subject is the receiver of the action (that is , when the subject is passive or is acted upon.
The tiger killed by the hunter.
The flat tire was changed by Sue.
A movie is going to be watched by us tonight.
The novel was read by Mom in one day.
The entire house was painted by Tom
The house will be cleaned by me every Saturday.
The comet was viewed by the science class