社会建构主义视角下不同学科摘要的句法差异研究——以计算机科学与应用语言学为例

A Study of Syntactic Differences in Abstracts of Different Disciplines from the Perspective of Social Constructivism—Taking Computer Science and Applied Linguistics as an Example

摘要: 本研究基于社会建构主义理论(Hyland, 2004)，通过构建计算机科学(CS)和应用语言学(AL)学科期刊摘要的语料库，系统分析两学科摘要在句法复杂度方面的差异及其社会建构机制。结果显示，AL摘要在句子长度、T-unit长度、主从复合句使用比例和复杂名词短语密度上显著高于CS摘要；而CS摘要则倾向于使用更为精练、术语化的名词短语结构。这些差异反映了各学科的特定话语实践与学科身份建构逻辑。研究不仅深化了对不同学科语言差异的理论理解，也为学术写作教学与跨学科交流提供了实践启示。

Abstract: Guided by social constructivist theory (Hyland, 2004), this study explores syntactic complexity differences in journal abstracts across two academic disciplines: computer science (CS) and applied linguistics (AL). By constructing comparable corpora of abstracts from both fields, the analysis systematically identifies and explains differences in syntactic complexity and their underlying social construction mechanisms. Results show that AL abstracts exhibit significantly greater sentence length, T-unit length, use of complex subordinate structures, and dense complex noun phrases than CS abstracts, while CS abstracts favor more concise and technical nominal phrases. These findings reflect disciplinary-specific discourse practices and their underlying logic of disciplinary identity construction. The study enhances theoretical understanding of different disciplines’ linguistic variation and offers practical implications for teaching academic writing and facilitating cross-disciplinary communication.