Does a verb phrase include the object?

In the broad constituency sense used here, it commonly does. Some narrower teaching uses of the term refer only to the verb group, so check the convention.

Will all parsers return the same VP?

No. Frameworks, annotation schemes and predicted attachments can differ. Some dependency parsers do not output VP constituents at all.

AI Glossary / Natural language and speech / Beginner

Verb phrase

Definition

Definition: A verb phrase is a grammatical constituent organized around a verb. In the broad constituency sense used here, it can include the verb, its objects or other complements, and associated modifiers. For example, “repaired the pump yesterday” can be the verb phrase in “Mira repaired the pump yesterday.”

What it means

What it means: A verb phrase is larger than a verb in many sentences, but it can also consist of a single verb. The phrase packages part of the clause's structure, not merely every nearby word that describes an action.
Terminology varies. Some teaching grammars use verb phrase more narrowly for a main verb together with its auxiliaries, as in “has been working.” Constituency parsing often uses VP for a broader constituent that includes complements. When comparing tools or explanations, first check which sense and grammatical framework they use.

How it works

How it works: A constituency grammar can use rules such as VP → Verb NP, meaning that a verb phrase contains a verb and a noun phrase. Another rule may allow a verb alone, or a verb followed by a prepositional phrase. The resulting structure distinguishes the head verb from the phrases that depend on it.
Phrases can be nested. A VP containing an auxiliary may contain a smaller VP, depending on the analysis. A prepositional phrase can attach inside an object noun phrase or modify the event, creating different structures and meanings. A parser predicts a structure permitted by its grammar and training, but its prediction is not guaranteed to match the intended reading.

Three practical examples

Three practical examples:
1. A task extractor needs the action and its object from “Replace the filter.” Returning only replace loses the item to act on, while returning the whole sentence may be unnecessary for a structured action field.
2. A translation system analyses a verb with its complements so it can generate an appropriate target-language structure. The English order of words inside the phrase is not a universal template.
3. A writing assistant compares “has approved the request” with “may approve the request.” A narrow verb group captures the auxiliary distinction, while a broader VP also contains the request. The product should specify which span it highlights and why.

Think of it this way

Think of it: A verb phrase resembles an action card that can include both an action and the details directly organized around it. A card headed repair may include the affected pump and a time note. Phrase membership, however, depends on syntactic analysis, not merely on desired content.

Worked example

Worked example: Use the sentence “Mira repaired the pump yesterday,” ignoring punctuation. There are five word occurrences. Under the intended broad analysis, the subject noun phrase is Mira, and the verb phrase is “repaired the pump yesterday,” containing four words.
Inside that VP, repaired is the head verb, “the pump” is a two-word object noun phrase, and yesterday is a time modifier. A minimal teaching grammar could represent this with S → NP VP, VP → Verb NP Adv, NP → Name or Det Noun, and the relevant lexical entries.
A tool that returns only repaired has found the head rather than the full four-word constituent under this analysis. That output may be useful, but it should not be scored as a full VP span without checking the tool's specification. Likewise, a narrow verb-group analysis may deliberately return a smaller unit. The distinction is one of defined scope, not automatically a software failure.

Illustrative case study

Illustrative case study: Fictional Harbor Tasks builds a highlighter for maintenance notes. Users expect “inspect the inlet valve” to be highlighted as a complete action, while the first implementation marks only inspect because it relies on part-of-speech tags.
The team adds phrase-level analysis and defines which complements belong in the highlighted span. It separately records optional time and location information when useful to the interface. Reviewers test ambiguous attachments and confirm that highlights remain faithful to the sentence. This invented case illustrates the gap between identifying a verb and extracting an application-specific action span; it reports no measured product gains.

Common misconceptions and mistakes

Common misconceptions and mistakes: A verb phrase need not contain several verbs. It can contain nouns and other kinds of words. It is not always identical to everything after the subject, especially across different constructions and languages. A verb group and a full VP may have different boundaries. A dependency parser can represent relationships without producing the same explicit VP node as a constituency parser. Finally, syntactic grouping does not establish that an action occurred, is requested or is authorized.

Business use

Business use: Define extraction boundaries before evaluating a language tool. If the application needs actions with objects, a verb-only tagger may not supply enough information. If it needs auxiliary patterns, a broad VP may contain unnecessary material. Preserve the original sentence and the chosen span so reviewers can inspect errors. Use examples that include complements, modifiers, auxiliaries and ambiguous attachments. Separating grammatical structure from the business interpretation makes it easier to locate whether a failure concerns parsing, span selection or meaning.

Check your understanding

Check your understanding: A tool returns “approved” for “The manager approved the request.” Does that alone show that it extracted the entire VP under the broad constituency sense?

Answer: No. The broader VP would normally include “the request” under that analysis. The tool may have returned the head verb or used a narrower definition. Its documented output scope determines the appropriate evaluation.

Related terms

Verb
Noun phrase
Head
Constituency parsing
verb group
constituent
complement
adjunct
dependency parsing

Learn next

mark the head verb and the full VP separately in a few short sentences. Add an object, an auxiliary and a time modifier one at a time. Compare the resulting spans with a parser's output, checking its grammatical framework before calling differences errors.

Sources

Sources: Jurafsky and Martin, Speech and Language Processing, Chapter 19, verb-phrase rules, constituency trees and attachment ambiguity: https://web.stanford.edu/~jurafsky/slp3/19.pdf . Chapter 18, verbs, auxiliaries and word-class tagging: https://web.stanford.edu/~jurafsky/slp3/18.pdf . The Mira parse and Harbor Tasks case are original teaching illustrations under an explicitly stated broad constituency interpretation; alternative uses of the term are distinguished.

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