A passive voice construction is a
grammatical voice
In linguistics, grammaticality is determined by the conformity to language usage as derived by the grammar of a particular speech variety. The notion of grammaticality rose alongside the theory of generative grammar, the goal of which is to for ...
construction that is found in many languages.
In a clause with passive voice, the grammatical
subject
Subject ( la, subiectus "lying beneath") may refer to:
Philosophy
*''Hypokeimenon'', or ''subiectum'', in metaphysics, the "internal", non-objective being of a thing
**Subject (philosophy), a being that has subjective experiences, subjective cons ...
expresses the ''theme'' or ''
patient
A patient is any recipient of health care services that are performed by healthcare professionals. The patient is most often ill or injured and in need of treatment by a physician, nurse, optometrist, dentist, veterinarian, or other health ...
'' of the main verb – that is, the person or thing that undergoes the action or has its state changed.
This contrasts with
active voice
Active voice is a grammatical voice common in many of the world's languages. It is the unmarked voice for clauses featuring a transitive verb in nominative–accusative languages, including English and most other Indo-European languages. A verb ...
, in which the subject has the
agent
Agent may refer to:
Espionage, investigation, and law
*, spies or intelligence officers
* Law of agency, laws involving a person authorized to act on behalf of another
** Agent of record, a person with a contractual agreement with an insuran ...
role. For example, in the passive sentence "The tree was pulled down", the subject (''the tree'') denotes the patient rather than the agent of the action. In contrast, the sentences "Someone pulled down the tree" and "The tree is down" are active sentences.
Typically, in passive clauses, what is usually expressed by the
object
Object may refer to:
General meanings
* Object (philosophy), a thing, being, or concept
** Object (abstract), an object which does not exist at any particular time or place
** Physical object, an identifiable collection of matter
* Goal, an ai ...
(or sometimes another
argument
An argument is a statement or group of statements called premises intended to determine the degree of truth or acceptability of another statement called conclusion. Arguments can be studied from three main perspectives: the logical, the dialect ...
) of the verb is now expressed by the subject, while what is usually expressed by the subject is either omitted o