Phrase Structure Grammars

In linguistics and cognitive science, the term 'grammar' refers to the syntax or set of formal rules of a language. These rules govern both the analysis and the production of sentences of a language. Accordingly, phrase structure grammars give us a set of rewrite rules and a series of variables designating grammatical types such as noun phrase, verb phrase, and prepositional phrase.

Phrase structure grammars enable hierarchical analyses of sentences. Hence, they allow us first to break down a sentence into the components noun phrase and verb phrase; these components can be broken down further and so on until unanalyzable components are reached.

phrase structure tree>

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