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In transformational grammar, a trace is an empty (phonologically null) category that occupies a position in the syntactic structure. In some theories of syntax, traces are used in the account of constructions such as wh-movement and passive. Traces are important theoretical devices in some approaches to syntax. ==Concept== A trace is usually what occupies the empty (null) position in the syntactic structure that is left behind when some element undergoes movement. For example, in a case involving wh-movement, a structure like *You like eating what? is transformed into *What do you like eating? the wh-word ''what'' being moved to the front of the sentence. In theories that posit traces, the position from which the wh-word was moved (in this case, the position of the direct object of ''eating''), is considered to be occupied by a trace. In relevant linguistic texts, the trace may be denoted by a letter ''t''; so the second sentence above may be written: *What do you like eating ''t'' ? Traces are considered primarily in Chomsky 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「Trace (linguistics)」の詳細全文を読む スポンサード リンク
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