摘要/Abstract

批判性话语分析在韩礼德系统功能语法的基础上，指出语言是一种社会实践，语言与社会结构密切相关。批判性话语分析通过分析语篇的语言特点以及社会历史背景来考察语言结构背后的意识形态意义，进而揭露语言、权力和意识形态之间扑朔迷离的关系。本文从系统功能语法的人际功能角度，针对奥巴马宣布本拉登死亡演讲全文这一语料进行批判性话语分析。这一语料属于政治演说，而政治演说的真实目的通常不在于提供信息，而在于拉反恐统一战线，震慑恐怖分子，在于对意识形态的控制：将反恐推向了高潮并势将反恐进行到底。

Critical discourse analysis (CDA) is based on functional grammar, and claims that language is a kind of social practice, which is closely related to social structure. Through analysis of linguistic features and social backgrounds, CDA discloses the complicated relationship among language, power and ideology. The ultimate aim of Obama’s announcement of Laden’s death is to threaten the terrorists, and unite more people and nations to devote themselves to the course of anti-terrorism.