The passive voice is constructed by placing the normal subject of a sentence at the end making it the agent of a passive voice sentence, at the same time the object of the sentence becomes the new subject of the sentence. The agent still performs the action of the verb, but the verbal structure is placed before the agent to stress the importance of the action over the agent who executes the action. Example:
Active sentence example: subject + <u>verb +</u><em>object</em>
I <u>eat</u> <em>pizza </em>every day.
passive sentence conversion: <em>object </em>+ <u>verb</u> + agent
<em>Pizza </em><u>was eaten</u> by me.
sometimes the agent is not even present in the passive voice because it is not that important.
Now that we know how to make it, let's change these sentences from active to passive:
Turn from Active to Passive
a. Someone is helping her with the housework.
She is being helped with her homework.
b. The mail-order company sent Mrs Green a parcel.
Mrs. Green was sent a parcel.
c. My friend sent me an invitation.
I was sent an invitation.
d. The secretary has given Mrs Jones some letters.
Mrs. Jones has been given some letters.
e. The traffic warden had already given him a ticket for illegal parking.
He had already been given a ticket for illegal parking.
f. John gave Elizabeth that beautiful ring.
Elizabeth was given that beautiful ring.
g. Her students have sent her flowers.
She has been sent flowers.
I hope this helps you.