“外壳名词”(shell nouns)喻指传递和表征命题信息的一类抽象名词(如fact、claim等)。以往研究集中于描述这类名词的语篇衔接作用,系统考察其人际功能(如,立场表达)却较少,其主要原因可能是对外壳名词语义分类模糊、人际功能理解不足。本研究以60篇学术论文为语料,提出“本质、特征和关系”的外壳名词语义分类新方法,并在学科话语共同体视阈内探讨外壳名词的立场建构人际功能。 “Shell nouns ” refers to a class of abstract nouns (such as fact, claim, etc.) that convey and characterize propositional information. Previous studies have focused on describing the cohesion of discourse of such nouns and systematically studying their interpersonal functions (eg, the expression of positions), but the main reason may be the vague semantic classification of shell nouns and the insufficient understanding of interpersonal functions. In the present study, 60 academic papers are used as the corpus to propose a new method of semantic classification of shell noumenon “essence, feature and relationship ”, and explore the position of shell nouns from the perspective of subject discourse community to construct interpersonal function.