Metadiscourse in English Cover Letters

摘要 元话语作为话语分析领域内一个较新的概念，近年来正成为研究的焦点。许多研究已经证明了元话语在不同文体中的重要性。本文在海兰德元话语人际模式分类的框架下，通过定量和定性分析的方法，调查分析了元话语在英文求职信中的使用情况和分布特征。一方面，本文旨在揭示元话语如何帮助建立作者与读者之间的人际互动关系；以及元话语如何帮助作者传达劝说信息，从而增强我们对元话语使用的认识。另一方面，本文旨在为中国学生学习书写英文求职信提供有益的借鉴。 研究结果表明，英文求职信中大量存在元话语。其中，互动元话语的比重远远高于交互元话语。在十类元话语的次范畴中，自我提及语，连接语和模糊语呈现的频率较高。此外，本...Synopsis Metadiscourse, as a relatively new concept in discourse analysis, is becoming a highly dynamic topic in recent years. Recent studies have proved its importance in a range of genres and settings. Under the theoretical framework of Hyland’s interpersonal model of metadiscourse, the current study carries out a comprehensive and in-depth analysis, both qualitatively and quantitatively, of...学位：文学硕士院系专业：外文学院英语语言文学系_英语语言文学学号：2005130031

A Pragmatic Analysis of Tag Question in English

英语附加疑问句作为一个具有疑问形式的独立语法单位,它具有语义和语用内涵。从语用内涵角度出发,附加疑问句具有调节,维系和发展人际关系;诱导听话者对所陈述信息加以确认;并且积极参与话语讨论等语用功能。本文通过定量分析三类对话部分同属会话语篇的语料,旨在揭示会话语篇中均不同程度的存在有标记的附加疑问句,以期对外语教学和教材编写有所启示和裨益。Tag question in English is an independent grammar unit with the interrogative from,which has semantic and pragmatic meaning.From the view of pragmatics,tag question has some functions as follows: adjusting,maintaining,and developing to interpersonal relationship;guiding the hearer to confirm the previous statement;and playing an active part in discourse's discussion.Based upon analysis of three texts,this paper is an attempt to explore there exist a lot of marked tag questions in English in the hope of contributing to future foreign language teaching and teaching materials

The Derivation and Automorphism group of trigonometric sine algebra

我们考虑的李代数${\mathbf{A}}_{h}$为由$\{\mathbf{A}(\mathbf{m})|\mathbf{m}\in\Gamma\}$张成的向量空间，$\Gamma=\mathbb{Z}^{2},$ $${\mathbf{A}}_{h}=\bigoplus_{\mathbf{m}\in\Gamma}\mathbb{C}\mathbf{A}(\mathbf{m})$$ 且${\mathbf{A}}_{h}$上的李运算定义为 [\mathbf{A}(\mathbf{m}),\mathbf{A}(\mathbf{n})]=g(\mathbf{m},\mathbf{n},h...let $\Gamma=\mathbb{Z}\mathbf{e}_{1}+\mathbb{Z}\mathbf{e}_{2}$, and $\Gamma^{*}=\Gamma\backslash\{0\}$. For $\mathbf{m}=(m_{1},m_{2})$ and $\mathbf{n}=(n_{1},n_{2})\in\Gamma$, let $\mathbb{R}$ is a real field, we consider the Lie algebra {\mathbf{A}}_{h}=\bigoplus_{\mathbf{m}\in\Gamma}\mathbb{C}\mathbf{A}(\mathbf{m})$$with bracket$$[\mathbf{A}(\mathbf{m}),\mathbf{A}(\mathbf{n})]...学位：理学硕士院系专业：数学科学学院_基础数学学号：1902011115252

金线莲营养器官的组织化学研究

研究金线莲营养器官中活性多糖的分布部位.方法:用环氧树脂包埋的半薄切片经PAS反应和苏丹黑染色方法,标记细胞中的活性多糖和脂类物质.结果:金线莲中的活性多糖主要分布在茎的皮层,根和叶片中不贮藏活性多糖;福建金线莲营养器官中含活性多糖比台湾金线莲多.结论:金线莲营养器官的活性多糖分布特征可作为选择金线莲的药用部位和种质资源的依据.漳州市科技计划项目(ZZ2016J27);;漳州卫生职业学院课题(ZYZ201401

Comparison on Microstructure of Anoectochilus roxburghii and A. formosanus

通过石蜡切片和表皮制片观察比较金线莲Anoectochilus roxburghii和台湾金线莲A.formosanus根、茎、叶的显微结构特征。结果表明,金线莲与台湾金线莲显微结构的主要区别在于根皮层厚度、维管束数目、叶构造、叶脉颜色、表皮乳头细胞的形状和气孔密度,这些特征可作为金线莲物种的显微鉴别依据。The microscopic structures of roots, stems, leaves of Anoectochilus roxburghii and A. formosanus were observed by paraffin sections and epidermis. The results showed that differences of microstructure between both plants are on cortex thickness and number of vascular bundle of root, and the structure, vein color, papilate cell shape, stomatal density of the leaf. All of these differences can be used as microspcopic identification of both plants.漳州市科技计划项目(ZZ2016J27);; 漳州卫生职业学院课题(ZYZ201401

长泰砂仁的本草考证及其生药鉴别

目的对长泰砂仁的品种进行本草考证及其生药鉴别。方法从本草考证、基源鉴别、性状鉴别、显微鉴别和理化鉴别等几方面来确定长泰砂仁的品种问题。结果长泰砂仁与阳春砂仁具有同一性,即是同一物种。结论长泰砂仁与阳春砂仁的化学成分含量略有差异,但主要特征成分相似,均符合国家药典规定。福建省教育厅科技项目资助课题(JA12437); 漳州市科技计划项目资助课题(Z2011060

Review of Sexual Reproduction Characteristics of Amomum villosum

阳春砂是我国珍稀濒危的药用植物,以其果实入药。由于阳春砂柱头高于花药,自然传粉结实率低,严重制约了果实产量。为揭示阳春砂果实形成的基础,探讨提高阳春砂产量的对应策略,本文就阳春砂的形态特征、生态习性、花粉发育、胚囊发育及开花、传粉、受精等有性生殖研究状况进行综述。Amomum villosum is rare and endangered medicinal plants in China, its fruit is used as medicine.Natural pollination seed setting rate is low for stigma being higher than anther, which severely limits its fruit production.In order to reveal the basis of forming fruit and explore corresponding strategy of improving the yield of A.villosum, the paper summarized research status on sexual reproduction such as morphological characteristics, ecological characteristics, pollen development, embryo sac development, flowering, pollination and fertilization.福建省自然科学基金(2015J0101); 福建省教育厅科技项目(JA12437

鱼腥草的组织结构研究

目的揭示鱼腥草叶、地上茎、地下茎的组织结构以及挥发油的贮藏组织。方法应用横切片、表面制片和粉末制片进行显微镜观察定位。结果鱼腥草的叶为异面叶,下表皮内侧有1列油细胞;地上茎和地下茎具有双子叶植物草质茎的典型特征,无限外韧维管束成环状排列,皮层、髓、髓射线中分布有较多的油细胞。结论鱼腥草的叶、地上茎、地下茎中大量的油细胞是挥发油的贮藏部位。福建省教育厅科技项目(JB11327

Testimony on original botany and Pharmacognostic identification of Morinda officinalis How produced in Fujian province

巴戟天是我国著名的“四大南药“之一,由于历代本草遗留下来的问题及各地用药品种和习惯的不同,来源植物涉及5科,11种;其中福建省有3种。为了鉴别闽产巴戟天的正品与代用品,对闽产巴戟天进行本草考证和来源、形态性状、显微结构和理化性质进行鉴别。结果表明:闽产巴戟天的正品与代用品在植物形态和结构方面,药材性状和理化特征方面都存在着差异,这些差异可作为巴戟天品种鉴定的依据。Morinda officinalis How is one of the famous traditional Chinese medicine.Because of original botany and difference of custom in using M.officinalis, there are 11 species, belonging to 5 families, named " Ba Ji Tian" , and 3 species of them in Fujian Province.In order to identify M.officinalis among other succedanea in Fujian Province, we identify it and other succedanea on morphology, pharmaceutical, microscopic and physic-chemical characteristics.The result indicated that there are some differences on the morphological, pharmaceutical, microscopic and physicchemical characteristics between certification and succedanea species.Those differences can be as identifiable index to separate M.officinalis from other imitations