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In linguistics a lexical verb or main verb is a member of an open class of verbs that includes all verbs except auxiliary verbs. Lexical verbs typically express action, state, or other predicate meaning. In contrast, auxiliary verbs express grammatical meaning. The verb phrase of a sentence is generally headed by a lexical verb. [1] Lexical ...
(However, the lexical verb get can also form a passive clause: He got promoted. [9]: 1429–1430 This is a long-established construction. [27]: 118 ) Followed by the present participle of a verb (whether lexical or auxiliary), be realizes the progressive aspect: He was promoting the film. [9]: 117, 119ff
An auxiliary verb (abbreviated aux) is a verb that adds functional or grammatical meaning to the clause in which it occurs, so as to express tense, aspect, modality, voice, emphasis, etc. Auxiliary verbs usually accompany an infinitive verb or a participle, which respectively provide the main semantic content of the clause. [1]
The English modal auxiliary verbs are a subset of the English auxiliary verbs used mostly to express modality, properties such as possibility and obligation. [a] They can most easily be distinguished from other verbs by their defectiveness (they do not have participles or plain forms [b]) and by their lack of the ending ‑(e)s for the third-person singular.
Do-support is not used when there is already an auxiliary or copular verb present or with non-finite verb forms (infinitives and participles). It is sometimes used with subjunctive forms. Furthermore, the use of do as an auxiliary should be distinguished from the use of do as a normal lexical verb, as in They do their homework.
Modern English permits this only in the case of a small class of verbs ("special verbs"), consisting of auxiliaries as well as forms of the copula be (see subject–auxiliary inversion). To form a question from a sentence which does not have such an auxiliary or copula present, the auxiliary verb do (does, did) needs to be inserted, along with ...
In the canonical form of the passive, a form of the auxiliary verb be (or sometimes get) is used, together with the past participle of the lexical verb. Passive voice can be expressed in combination together with tenses, aspects and moods, by means of appropriate marking of the auxiliary (which for this purpose is not a stative verb, i.e. it ...
In English, a non-finite verb form may constitute: an infinitive verb, including the auxiliary verb have — within a verb phrase that is predicated by a modal verb (e.g., "I could have cried"). within a to-infinitive phrase (e.g., "They seem to have moved"). a participle. a gerund. Each of the non-finite forms appears in a variety of environments.