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In linguistics, subcategorization denotes the ability/necessity for lexical items (usually verbs) to require/allow the presence and types of the syntactic arguments with which they co-occur.〔Chomsky (1965) is a prominent early source on the concept of subcategorization.〕 The notion of subcategorization is similar to the notion of valency,〔The valency concept in linguistics is originally from Tesnière (1959).〕 although the two concepts (subcategorization and valency) stem from different traditions in the study of syntax and grammar. ==Examples== While subcategorization is a concept that can apply to most any type of lexical item, it is usually discussed with respect to verbs. Verbs that take just one argument are classified as intransitive, while verbs with two and three arguments are classified as transitive and ditransitive, respectively.〔See Tallerman (2011:39-41) for a discussion of subcategorization in terms of intransitive, transitive, and ditransitive verbs.〕 The following sentences are employed to illustrate the concept of subcategorization: ::Luke worked. ::Indiana Jones ate chilled monkey brain. ::Tom waited for us. The verb ''worked/work'' is intransitive and thus subcategorizes for a single argument (here ''Luke''), which is the subject; therefore its subcategorization frame contains just a subject argument. The verb ''ate/eat'' is transitive, so it subcategorizes for two arguments (here ''Indiana Jones'' and ''chilled monkey brain''), a subject and an optional object, which means that its subcategorization frame contains two arguments. And the verb ''waited/wait'' subcategorizes for two arguments as well, although the second of these is an optional prepositional argument associated with the preposition ''for''. In this regard, we see that the subcategorization frame of verbs can contain specific words. Subcategorization frames are sometimes schematized in the following manner: ::work (__ ) ::eat (__ (NP) ) ::wait (__ (''for''NP) ) These examples demonstrate that subcategorization frames are specifications of the number and types of arguments of a word (usually a verb), and they are believed to be listed as lexical information (that is, they are thought of as part of a speaker's knowledge of the word in the vocabulary of the language). Dozens of distinct subcategorization frames are needed to accommodate the full combinatory potential of the verbs of any given language. Finally, subcategorization frames are associated most closely with verbs, although the concept can also be applied to other word categories. Subcategorization frames are essential parts of a number of phrase structure grammars, e.g. Head-Driven Phrase Structure Grammar, Lexical Functional Grammar, and Minimalism. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「subcategorization」の詳細全文を読む スポンサード リンク
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