Verb phrase
A verb phrase (VP) is a fundamental syntactic unit in linguistics, consisting of a head verb along with its dependents, such as objects, complements, and modifiers, but excluding the subject of the clause.[1] In English and many other languages, the VP functions as the predicate of a sentence, expressing the action, state, or occurrence attributed to the subject, and it is headed by the main verb which determines the phrase's core meaning and subcategorization requirements.[2] Verb phrases can be simple, comprising just the head verb (e.g., "runs"), or complex, incorporating auxiliary verbs for tense, aspect, or mood (e.g., "has been running"), adverbial modifiers (e.g., "runs quickly"), prepositional phrases (e.g., "runs in the park"), or noun phrases as direct objects (e.g., "eats an apple").[3] They are classified into finite forms, which inflect for tense and agree with the subject (e.g., "studies Vietnamese"), and non-finite forms, such as infinitives or participles, which lack such inflection and often serve in subordinate roles (e.g., "to study Vietnamese").[1] In phrase structure grammars, the VP plays a central role in sentence construction, typically following the subject noun phrase under the sentence node, and its internal structure allows for recursion and embedding, enabling complex expressions of events and relations.[4]Definition and Scope
Core Definition
In linguistics, a verb phrase (VP) is defined as the syntactic category consisting of a head verb and its dependents, which may include complements and modifiers, and it functions as the predicate in a clause.[5] This structure encapsulates the core action or state expressed by the verb, excluding the subject in standard analyses.[6] The concept of the verb phrase traces its origins to traditional grammar, where it described sequences of verbs and related elements, but it was rigorously developed in structural linguistics during the early 20th century.[7] Leonard Bloomfield played a pivotal role in formalizing the term in the 1930s, introducing phrases as distributional units in syntax through his influential work Language (1933), where he described a phrase as a free form composed of two or more lesser free forms, with the verb phrase specifically headed by a verb.[8] This evolution marked a shift toward empirical, form-based analysis in American linguistics, emphasizing observable patterns over prescriptive rules.[7] Within sentence structure, the VP serves as the minimal predicate unit, assigning thematic roles (also known as theta-roles) to its arguments, which specify semantic relationships such as agent, patient, or theme in the event denoted by the verb.[9] These roles are inherent to the verb's lexical properties and ensure that arguments are linked appropriately to the predicate's meaning.[9] A basic representation of a simple VP in phrase structure can be illustrated with the following tree diagram for the phrase "eat the apple":[10] This structure highlights the verb as the head projecting the phrase, with the noun phrase as a dependent complement. Like the noun phrase, the VP exemplifies a major syntactic category organized hierarchically around its lexical head.[6]VP / \ V NP eat / \ Det N the appleVP / \ V NP eat / \ Det N the apple