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主位结构是语篇功能的重要部分,对篇章的连贯起着重要的作用。前人对新闻报道的主位结构研究主要侧重于不同语场或语旨方面,而在不同语式方面的对比研究则较少。本研究主要探讨新闻报道某一特定语场——科技新闻英语在两种不同语式广播和报刊中的主位结构特点的异同。研究应用了系统功能语法理论,分别对2009～2010年美国《纽约时报》、标准《美国之音》和慢速《美国之音》的科技新闻报道的主位结构,从多角度进行了量化分析研究,并对其特点、异同进行了深层次的阐释。
Thematic structure is an important part of discourse function, which plays an important role in the coherence of the discourse. The previous research on the thematic structure of news reports mainly focuses on different aspects of language or language, while the comparative studies on different linguistic styles are less. This study focuses on the similarities and differences of the thematic structure of News in a particular language field - Science News English in two different types of language broadcasts and newspapers and periodicals. In this paper, the system functional grammar theory is applied and studied. Thematic structures of the science and technology news coverage of the New York Times, Standard American Voice and Slow Voice of America from 2009 to 2010 are analyzed and analyzed quantitatively Research, and its characteristics, similarities and differences were in-depth explanation.