三句一节组合单元是一种古老的诗歌体式,大量保存在《诗经》的周族史诗中。这一结构模式在具体篇目中出现的章次不尽相同,有前后和奇偶之分,但一章之内均以两组为原则,体现出《诗经》追求对称的尚偶倾向。根据该单元的语义结构,可分为问答、并列、承接、分合四种类型。与偶数句的组合相比,三句单元可将描述对象进一步展开,具有独特的叙事优势。从音乐上讲,在整齐的节奏中置入奇数节拍,使齐整与变化、有序与无序的实现统一,会形成缓急起伏的悠扬曲调,增强诗歌的抒情色彩。对《诗经》章节的划分,不宜单纯依赖用韵规则,还要兼顾三句一节的结构模式,从而深入挖掘诗歌的叙事特色与音乐效果。 Combination of three sentences a unit is an ancient style of poetry, a large number of preserved in the “Book of Songs” of the epic. The chapters of this structural model appear in different chapters in different chapters. They are divided into two groups before and after. However, the principle of both groups is reflected in one chapter, which reflects the tendency of the Book of Songs to pursue symmetry. According to the unit’s semantic structure, can be divided into question and answer, tied, to undertake, divided into four types. Compared with the combination of even-numbered sentences, the three sentence-units can further expand the description object and have unique narrative advantages. In terms of music, odd-numbered beats are placed in neat rhythms to unify and change, order and disorder to form a melodious melodious melody that enhances the lyricism of poetry. The division of The Book of Songs should not rely solely on the rules of rhyme, but also take into account the structure of the three sentences in order to dig deep into the narrative features of poetry and music effects.