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本文以優選理論的觀點分析台灣漢語饒舌歌的節奏類型。主要論點包括三個部份：節拍對應、音節對應與韻句分析。本研究建立一個漢語饒舌歌語料庫，提出數據佐證分析，認為漢語饒舌歌的節奏類型不只一種，不同的節奏類型可透過並存音韻理論(Cophonology Theory)來解釋，另外，本文也提出浮動制約(Floating Constraints)來預測漢語饒舌歌中不同節奏型態出現的比例。在節拍對應方面，透過虛詞左向附著與其他制約的排序變化，可以篩選出音節與節拍不同的對應方式。在音節對應方面，當一韻句需要滿足簡單律時，就會產生音節跨越現象。而在韻句分析方面，透過左界對整(U,x)與其他制約的排序變化，可以預測兩韻句間之間隔1/2拍或1/4拍的例子。整體而言，本篇研究就漢語饒舌歌中豐富的節奏類型提出語料以及理論上的分析基準。 / This thesis analyzes the rhythmic structure of Chinese raps in Taiwan from the perspective of Optimality theory. Three factors are in order: the demibeats mapping, the syllable mapping and the utterance phrasing. The thesis adopts the corpus-based analysis. This thesis proposes that rhythmic variants can be accounted for through the constraint re-ranking in terms of the Cophonology Theory. The positing of floating constraints can then predict the percentages of the rhythmic variants. In demibeat mapping, the interaction between F-share-L(the left-adjunction of functors) and other constraints results in different ways of demibeat-syllable correspondence; in syllable mapping, Simplicity decides the syllable-straddling phenomenon. Finally, in utterance phrasing, the interaction between Align-L(U,x) and other constraints predicts different lengthens of the utterance breaks. To conclude, this thesis provided a corpus and theoretical basis for the rhythmic structures of Chinese raps.