“至于”的话语功能是转换话题,其语义基础是“至于”前后两个话题之间存在语义上的联系。从认知角度看,转换前后的两个话题总是处于相同的认知域(认知框架)。处于同一认知域中的名词之间既有共性又有个性,因此,“至于”引导的话题存在对比性,这种对比性在“至于”与比较义词语和转折词语的共现等方面都有表现。 The function of the discourse of “As to ” is the topic of conversation, the semantic foundation of which is that there is a semantic relationship between the two topics before and after “As to ”. From a cognitive perspective, the two topics before and after conversion are always in the same cognitive domain (cognitive framework). The nouns in the same cognitive domain have both commonalities and personalities. Therefore, there exists a contrast between the topics guided by “as ”, which contrast between the “as” and the comparative words and transitional terms Now other aspects of performance.