If the writer gives more impact or attention to the doer, the PASSIVE VOICE is used, but if the action is the one given more focus, then it is the ACTIVE VOICE.
Examples: (From the Web)
ACTIVE: I will clean the house every Saturday.
PASSIVE: The house will be cleaned by me every Saturday.
Answers & Comments
If the writer gives more impact or attention to the doer, the PASSIVE VOICE is used, but if the action is the one given more focus, then it is the ACTIVE VOICE.
Examples: (From the Web)
ACTIVE: I will clean the house every Saturday.
PASSIVE: The house will be cleaned by me every Saturday.