Toefl Practice about Passive Voice

Passive Voice is the thing or person becomes the subject of the sentence.

Formula Active to Passive Voice:

Active Voice: S  +  V  +  O

Passive Voice: O  +  V  +  S

For example:

Active voice: She prepares dinner.

In active voice 'she' as subject (S), 'prepares' as verb (V), and 'Dinner' as Object (O)

Passive, we can turn around the O from back into the front of sentence.

  Passive voice: The dinner is prepared by her. 

'The dinner' as subject (S), 'is prepared' as Verb (V), and 'by her' as object (O)