The Voice of the Verbs:

There are two types of voices: the active voice and the passive voice.

The Active Voice:

In the active voice, the subject of the sentence is the doer of the action.

This is the most common and direct way of expressing a sentence.

Example: John ate the pizza.

In this sentence, John is the subject, and Ate is the action.

The Passive Voice:

In the passive voice, the subject of the sentence is the receiver of the action, and the doer of the action is either not mentioned or is introduced using the preposition by.

Example: The pizza was eaten by John.

In this sentence, pizza is the subject, was eaten is the passive verb form, and by John indicates who performed the action.

To convert an active sentence to passive voice, the object of the active sentence becomes the subject of the passive sentence, and the verb is changed to its passive form.

The subject of the active sentence either becomes the object of the preposition by itself or is omitted altogether.

Example: Active: The teacher graded the papers.

Passive: The papers were graded by the teacher.

The Passive voice is often used when the focus is on the object or the receiver of the action rather than the doer.