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How to Write the Introduction 目录 1、引言及其作用 2、如何写引言 3、引言部分的语言特征 4、总结 1.引言及其作用 1.1 什么是引言 1.2 为什么要写引言 1.3 引言的作用 1.4 何时写引言 2.如何写引言 2.1 引言的组成 2.2 引言的特点 2.3 引言的结构与布局 2.4 引言实例 3.引言部分的语言特征 3.1 引言部分的时态与语态 3.2 引言部分常用的句型 3.3 引言部分常用的词语 3.4 引言部分的注意事项 Present Tense The present tense (is， are) is used when stating generalizations or conclusions. e.g.1： This paper is organized as follows. e.g.2： In this paper， we adopt an IA scheme for SISO transmission…… When describing recent advances in a certain research field， or aiming to emphasize the impact of something happening recently on the present， you are suggested to use present perfect tense. e.g.1: This approach has been exploited by Cadambe and Jafar in……. e.g.2: The authors have shown that the maximum achievable DoF（degrees of freedom自由度）in the K-user time-varying single-input single-output (SISO，单输入单输出) Voice 在学术论文中，我们可能经常会被是否可以使用we（我们）或I（我）的问题困扰。关于这点，一点要区分we在这里指代什么。一般来说，作者使用we提及作者的研究团队而不是泛指人类群体。 e.g.1： In this paper， we adopt an IA scheme for SISO transmission， and we try to modify the design in order to achieve higher sumrate（和速率） performance in the practical SNR region.（主动语态，we不泛指人群，而是作者所属研究团队） exercise 1、Brown (1998) ____ the importance of time management both when preparing for and actually sitting examinations. A. conclude B.concludes C.stress D.stresses 2、For some years there has been an awarenrss of the dangers of Salmon farming in Scottish Lochs， and several studies(see e.g.， Brown [2000]， Maclnnes[2002]) ____ potential risks. A.indicate B.have indicate C.claim D.have claimed 3、In the Canadian study "Primary School French，" researchers_____ a clear association between language proficiency and parental income (Lefebvre et al.1999). A.stated B.have stated C.demonstrated D.have demonstrated answer: 1.D 2.B 3.C exercise 1、The paper shows an approach to model ontology（存在论） and epistemology（认知论） for an agentbased wayfinding system. 本文展示了模拟存在论和认知论在代理装置寻路系统的路径。 2、It is our goal to try to reveal some of the basic elements of effective team teaching partnership and to discuss whether this model of team teching influence teacher development. 我们的目的是要揭示有效团队教学合作的某些基本元素，讨论团队教学是否影响教师的发展模式。 3、Very little is known， however， about the chance of benefit from chemotherapy(化疗) in this disease. 然而，对这种疾病化疗的有效几率情况不详 Thank You!
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