对偶,也称对仗、对联等,是用结构相同、字数相等的一对句子或短语来表达两个相对或相近意思的句子,成对地排列在一起的修辞格(或修辞手法)。在古代诗文里,特别是骈文和律诗里普遍存在着这种修辞格,形成了中国特有的一种文学艺术形式。掌握对偶这种修辞格,有利于古代诗文的解读。通常我们把句法结构相同、数字相同的两句互相称为对仗,这是 Duality, also known as confrontation, couplet, etc., uses a pair of sentences or phrases with the same structure and the same number of words to express two sentences that are of opposite or similar meaning, and rhetorical cells (or rhetorical devices) arranged in pairs. In the ancient poems, especially the rhetorical figures in the prose and the legal poems, there is a unique literary and artistic form in China. Mastering this rhetoric of duality is conducive to the interpretation of ancient poetry. Usually we call each other the same syntactic structure and the same number.