文章考察河北饶阳方言中的轻声前去声变调现象,并提出共时音系分析。该分析假设古清浊对立以调域对立的形式保留在声调底层表达中,且轻声并非完全没有声调特征。在此基础上,建立了声调的对立层级表达式,设立了变调规则并构拟了变调推导过程。最后思考了共时变调与历时音变的关系问题,认为共时分析应具有历史理据,历史因素在共时语法中有迹可寻。 This article investigates the phenomenon of the tone-shifting of the soft-spoken voice in Raoyang dialect in Hebei Province and puts forward the synchronic phonological analysis. The analysis assumes that the ancient voicing opposites remain in the bottom of tone expression in the form of antitonepsion, and the tone is not without any tonal features at all. On this basis, the antithetical expression of tone is established, the rules of variation are established and the process of variation adjustment is constructed. In the end, I think about the relationship between synchronic variation and diachronic phonetic change. I think the synchronic analysis should have the historical rationale, and the historical factors are traceable in synchronic grammar.