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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 ...
In the prepositional phrase apart from Jill, for example, the preposition apart requires that the complement include the preposition from. In the prepositional phrase since before the war, however, the preposition since does not require the preposition before and could have instead been something else, such as since after the war. [14]: 635–643
The term phrase structure grammar was originally introduced by Noam Chomsky as the term for grammar studied previously by Emil Post and Axel Thue (Post canonical systems). Some authors, however, reserve the term for more restricted grammars in the Chomsky hierarchy : context-sensitive grammars or context-free grammars .
A prepositional phrase can be used as a complement or post-modifier of a noun in a noun phrase, as in the man in the car, the start of the fight; as a complement of a verb or adjective, as in deal with the problem, proud of oneself; or generally as an adverb phrase (see above). English allows the use of "stranded" prepositions.
Prepositional phrases are also placed beneath the word they modify; the preposition goes on a slanted line and the slanted line leads to a horizontal line on which the object of the preposition is placed. These basic diagramming conventions are augmented for other types of sentence structures, e.g. for coordination and subordinate clauses.
Prepositions in this section may also take other kinds of complements in addition to noun phrase complements. Prepositions marked with an asterisk can be used transitively or intransitively; that is, they can take noun phrase complements (e.g., he was in the house) or not (e.g., he was in).
In phrase structure grammars, the phrasal categories (e.g. noun phrase, verb phrase, prepositional phrase, etc.) are also syntactic categories. Dependency grammars, however, do not acknowledge phrasal categories (at least not in the traditional sense). [2]
verb phrase complementation structure dative complement structure ... is the equivalent of the English oblique dative form in which the dative prepositional phrase is ...