摘要
本文借用杨牧评论诗歌时所提出的“变奏”的概念，尝试以跨越千年的三首同题诗《公无渡河》（《公无渡河》本事诗、李白《公无渡河》以及余光中《公无渡河》）为例，分析诗人如何在原有的题目或题材上进行变奏和再创造，进一步丰富了杨牧关于“变奏”的内涵。
關鍵字
無資料並列摘要
This study uses Yang Mu's concept of "variation" when he appraised poems to analyze how poets make changes and recompose the original title or theme of three poems with the same title "Gong Wu Du He" written by three poets over one thousand years as examples so as to reinforce Yang Mu's concept of ''variation".