Voice (grammar) in the context of "Auxiliary verb"

A verb is a word that generally conveys an action (bring, read, walk, run, learn), an occurrence (happen, become), or a state of being (be, exist, stand). In the usual description of English, the basic form, with or without the particle to, is the infinitive. In many languages, verbs are inflected (modified in form) to encode tense, aspect, mood, and voice. A verb may also agree with the person, gender or number of some of its arguments, such as its subject, or object. In English, three tenses exist: present, to indicate that an action is being carried out; past, to indicate that an action has been done; and future, to indicate that an action will be done, expressed with the auxiliary verb will or shall.

Active voice is a grammatical voice prevalent in many of the world's languages. It is the default voice for clauses that feature a transitive verb in nominative–accusative languages, including English and most Indo-European languages. In these languages, a verb is typically in the active voice when the subject of the verb is the doer of the action.

In active voice, the subject of the sentence performs the action expressed by the main verb and is thus the agent. For example, in the sentence "The cat ate the fish", 'the cat' functions as the agent performing the action of eating. This contrasts with the passive voice, where the subject is the recipient of the action, such as in "The fish was eaten by the cat." The use of both active and passive voices in languages enhances versatility in sentence construction, allowing either the semantic agent or patient to assume the syntactic role of the subject.

In linguistics, a grammatical category or grammatical feature is a property of items within the grammar of a language. Within each category there are two or more possible values (sometimes called grammemes), which are normally mutually exclusive. Frequently encountered grammatical categories include:

• Case, varying according to the relations between the participants in an action (e.g. subject, object, possession, direction, accompaniment etc.).
• Noun classes, such as gender, animacy, and so on.
• Number, varying according to the number of things (e.g. singular or plural).
• Tense, varying according to when an action takes place (e.g. present, past or future).
• Aspect, varying according to the state of an action in relation to time (e.g. completed, ongoing, repeated, habitual etc.).
• Mood and modality, varying according to the speaker's attitude towards an action and its relation to reality (e.g. statement of fact, hypothetical, questioning, ordering, suggesting etc.).
• Voice, varying according to the role taken by each participant in an action (e.g. active or passive).

Although the use of terms varies from author to author, a distinction should be made between grammatical categories and lexical categories. Lexical categories (considered syntactic categories) largely correspond to the parts of speech of traditional grammar, and refer to nouns, adjectives, etc.

In linguistics, a participle (from Latin participium 'a sharing, partaking'; abbr. PTCP) is a nonfinite verb form that has some of the characteristics and functions of both verbs and adjectives. More narrowly, participle has been defined as "a word derived from a verb and used as an adjective, as in a laughing face".

"Participle" is a traditional grammatical term from Greek and Latin that is widely used for corresponding verb forms in European languages and analogous forms in Sanskrit and Arabic grammar. In particular, Greek and Latin participles are inflected for gender, number and case, but also conjugated for tense and voice and can take prepositional and adverbial modifiers.

Symmetrical voice, also known as Austronesian alignment or the Austronesian focus system, is a typologically unusual kind of morphosyntactic alignment in which "one argument can be marked as having a special relationship to the verb". This special relationship manifests itself as a voice affix on the verb that corresponds to the syntactic role of a noun within the clause, that is either marked for a particular grammatical case or is found in a privileged structural position within the clause or both.

There are two alignment types of languages with symmetrical voice: the Philippine type, which mostly retains the original system from Proto-Austronesian with four voices (or sometimes three), and the Indonesian type, which reduced them into only two voices.