Question

This box contains books.(begin with box and change into passive voice)

Answer 1

Books are contained in this box.

$\huge\bold{Voice:-}$

Voice refers to the form of verb which shows whether the subject does something or something is done to it.

For example:- Sonia wrote the book.
== The book was written by Sonia.

$\underline\bold{Active:-}$ In this sentence , Sonia (the subject of the sentence) is the doer - she does something.
The verb wrote is said to be in the $\bold{active\:voice.}$

In other words, a verb is said to be in the active voice when the subject does the action.

$\underline\bold{Passive:-}$ In the second sentence, something is done to the book- the subject (the book) here is not the doer of the action, but the receiver. The verb form $\bold{was\:written}$ is in the active voice.

Therefore, a verb is said to be in the passive voice when the subject is the receiver of the action, and the action is done by somebody or something else.

Answer 2

$\bold{Answer}$

Ans : Books are contained in this box.

Now it's converted into passive voice.

$\bold{Voice :}$ Voice is a grammatical feature which describes the relationship between the verb and the subject. This called voice.

There are two types of voice

1. Active voice

2. Passive voice

$\bold{Active \ voice}$

Sentence where the subject performs the action stated by the verb is known as active voice.

$\bold{Passive \ voice}$

Passive Voice is a clause in which an action is emphasized rather than its subject.