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1.1 Overview of the thesis
理论上支持成立由韩礼德的系统功能语言学，本论文研究旨在探讨宏观结构和话语模式辅助实现显着的主题，在大学英语写作的交际目的和其外的角度来看，通过描述性统计分析的功能，旨在探讨的潜在标记的主题选择。系统功能语言学（SFL），正如它的名字所暗示的，认为人类的语言和交际活动为基础的功能和语义。哈利迪开发了语言的基本功能，他在其中的语言学习者提供定位功能语法的理论。3元函数提出了观念，人际关系和文字，其中每个语言意义的建设作出贡献。观念我处理逻辑和经验的内容无论是在世界还是在我们的脑海中已经表示和构造内语言;扬声器或作家的立场，需要相对于听者或读者关注的是人际意义;语篇功能是组织在系统中实现邮件的主题和信息转化为凝聚力。Theoretically supported by systemic-functional linguistics established by M.A.KHalliday, the research of this thesis intends to explore the macro structure and discoursefunctions of marked themes realized by modal adjuncts in college English writings fromthe perspective of the communicative purpose and through the descriptive statisticalanalysis, aiming to investigate the potential marked theme choice. Systemic-functionallinguistics (SFL), as its name suggests, considers function and semantics as the basis ofhuman language and communicative activity. Halliday developes a theory of thefundamental functions of language, in which he provides the language learners with anorientation to functional grammar. Three metafunctions are brought forth as ideational,interpersonal and textual, each of which contributes to the construction of meaning inlanguage. The ideational metafiinction deals with the logical and experiential contenteither in the world or in our minds that has been represented and constructed withinlanguage; the interpersonal metafunction is concerned with the stance which the speakeror writer takes relative to the listener or reader; the textual metafunction is to organizethe messages realized in the system of theme and information into cohesion.
The focusof this study is the textual metafunction, and the way in which certain interpersonalmeanings, i.e. meanings that belong to the interpersonal metafunction, are embeddedwithin the choice of Theme in a clause complex. Within the textual metaftinction thetwo choices Theme and Rheme form the major system. Modal Adjuncts are intrinsicallyinterpersonal in nature, adding information that reflects the writer's or speaker'sjudgment. Interpersonal Themes are not necessarily obligatory elements of Theme asthey can occur in other positions in the clause. However，as Halliday points out, they arecommonly in thematic position because “If the speaker includes within the messagesome element that presents his or her own angle on the matter, it is natural to make thisthe point of departure: Til tell you what I think，，（Halliday，1994:49), Modal Adjuncts have two sub-types, Comment Adjuncts and Mood Adjuncts. Comment Adjuncts arerealized by expressions which comment on the clause as a whole, such as generally,unfortunately. Mood Adjuncts are more commonly linked to the Finite within the clause,for example obviously, actually. Based on Mathusius's research on theme-rhemedistinction, thematic theory has been perfected by linguists at home and abroad, such asHalliday, Danes, Brown and Yule, etc. and at home there are Hu Zhuanglin, ZhuYongsheng, Yan Shiqing and HuangGuowen, etc. They have made great contributions tothe development of the thematic theory. Following the terminology of theme and rhemecreated by Matheusius, Halliday deeply probed into the theme and rheme in hissystemic-functional grammar. In 1970 Halliday firstly defined the theme as the point ofdeparture for the clause as a message; later in 1985 he changed it as the element servingas the point of the departure of the message or what the claus本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。