本文探讨“X的N比YW”格式类“比”字句,如“他的年纪比我大”。本文着眼于比较项X/Y和比较点N的语义关系,对这类“比”字句成立的条件进行了探讨。经探讨发现:对于这类“比”字句,从X/Y的词汇意义或借助于“X比YNW”的结构意义,可以看出N在X/Y的支配域中具有显著性,同时X/Y和N之间存在“整体—部分”的关系,而这种显著性和“整体—部分”关系是这类“比”字句能够成立的一个必要条件。 This article explores the “X-than-YW” format class of “X”, such as “his age is older than me.” This article focuses on the comparison of terms X / Y and N comparison of the semantic relations of such “than ” conditions were discussed. It has been found through exploration that for these “” than “” words, from the lexical meaning of X / Y or the structural meaning of “Xby YNW ”, it can be seen that N is significant in X / Y dominance , While there is a “whole-part” relationship between X / Y and N. This salience and the “whole-part” relationship are necessary conditions for such “bicom” clauses.