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  2. Phrase structure rules - Wikipedia

    en.wikipedia.org/wiki/Phrase_structure_rules

    A grammar that uses phrase structure rules is a type of phrase structure grammar. Phrase structure rules as they are commonly employed operate according to the constituency relation, and a grammar that employs phrase structure rules is therefore a constituency grammar; as such, it stands in contrast to dependency grammars, which are based on ...

  3. Subject–auxiliary inversion - Wikipedia

    en.wikipedia.org/wiki/Subject–auxiliary_inversion

    When the movement rule applies, it moves the auxiliary to the beginning of the sentence. [5] An alternative analysis does not acknowledge the binary division of the clause into subject NP and predicate VP, but rather it places the finite verb as the root of the entire sentence and views the subject as switching to the other side of the finite verb.

  4. Syntax - Wikipedia

    en.wikipedia.org/wiki/Syntax

    In linguistics, syntax (/ ˈ s ɪ n t æ k s / SIN-taks) [1] [2] is the study of how words and morphemes combine to form larger units such as phrases and sentences.Central concerns of syntax include word order, grammatical relations, hierarchical sentence structure (constituency), [3] agreement, the nature of crosslinguistic variation, and the relationship between form and meaning ().

  5. Syntactic Structures - Wikipedia

    en.wikipedia.org/wiki/Syntactic_Structures

    The grammar model discussed in Noam Chomsky's Syntactic Structures (1957) Chomsky's transformational grammar has three parts: phrase structure rules, transformational rules and morphophonemic rules. [68] The phrase structure rules are used for expanding lexical categories and for substitutions. These yield a string of morphemes. A ...

  6. Chomsky hierarchy - Wikipedia

    en.wikipedia.org/wiki/Chomsky_hierarchy

    A formal grammar describes how to form strings from a language's vocabulary (or alphabet) that are valid according to the language's syntax. The linguist Noam Chomsky theorized that four different classes of formal grammars existed that could generate increasingly complex languages.

  7. Chomsky normal form - Wikipedia

    en.wikipedia.org/wiki/Chomsky_normal_form

    An ε-rule is a rule of the form A → ε, where A is not S 0, the grammar's start symbol. To eliminate all rules of this form, first determine the set of all nonterminals that derive ε. Hopcroft and Ullman (1979) call such nonterminals nullable, and compute them as follows: If a rule A → ε exists, then A is nullable. If a rule A → X 1...

  8. Grammar - Wikipedia

    en.wikipedia.org/wiki/Grammar

    A description, study, or analysis of such rules may also be known as a grammar, or as a grammar book. A reference work describing the grammar of a language is called a reference grammar or simply a grammar. A fully revealed grammar, which describes the grammatical constructions of a particular speech type in great detail is called descriptive ...

  9. English grammar - Wikipedia

    en.wikipedia.org/wiki/English_grammar

    The first published English grammar was a Pamphlet for Grammar of 1586, written by William Bullokar with the stated goal of demonstrating that English was just as rule-based as Latin. Bullokar's grammar was faithfully modeled on William Lily's Latin grammar, Rudimenta Grammatices (1534), used in English schools at that time, having been ...