自索绪尔开始确立并不断完善的结构主义研究框架始终将语言研究的对象视为同质、自足的系统,将语言变异排除在语言核心系统之外。在当时需要对大量人们从未接触过的语言进行调查描写的背景下,结构主义的方法不仅是极为有效的,也是唯一可行的。这反映了认识的一般规律:人们对未知事物最初始的认识,必然只是其历史过程中的一个切面,即共时、同质、自足的;只有对其形成一 The framework of structuralism, which Saussure began to establish and perfect, has always regarded the object of linguistic research as a system of homogeneity and self-sufficiency that excludes language variations from the core system of language. In the light of the time when a large number of languages ​​that people had never touched before had to be investigated and described, the structuralist approach was not only extremely effective but also viable. This reflects the general law of cognition: the initial understanding of unknown things must be only one aspect of its historical process, that is, synchronic, homogeneous and self-sufficient;