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1、主体段写作分析原因（现象解释类；对立观点类）阐述方法或者提出建议（问题解决类）分析影响（利弊；危害性）（现象解释类；问题解决类）结构和内容要素表列举、递进、转折或对比首先：Firstly;Tostart/beginwith;Forastart;Aboveall,Firstofall,Inthefirstplace,firstandforemost衔接词Besides;Also;Inaddition;Additionally;Moreover;furthermore;Secondly;thirdly;Lastbutnotleast其次/而且/另外(表
2、递进和列举)然而：However;Nevertheless;while+句子；despitethat+句子/despite+名词短语相反：onthecontrary;Conversely;incontrastincomparisonwith…表转折、对比：成对出现的衔接词：Ontheonehand,…ontheotherhandForonething,…foranother,…引出原因句型A类句型(许多/以下)原因可以解释…现象：Anumberoffactorsareaccountableforthissituation.Firstofall,…M
3、oreover,…Besides,…Anumberoffactorsmightcontributeto/leadto/accountforthephenomenon/problem.3.Thefollowingreasonscanaccountfor/explainthephenomenon.分析原因句型B类句型：Therebe句型3.Therearemanyfactorsresponsiblefor/behindthisphenomenon.4.Therearealargenumberofreasonsforthissocialphenomeno
4、n,butingeneral,theycomedowntothreemajorones.C类句型：提问引出原因5.Why…?6.Butwhatleadto…?练习：1.为什么“博客”在短时间类就变得如此流行呢？Whydoes“blog”becomesopopularinsuchashorttime?2.是什么导致父母的期望和孩子的理想之间的冲突呢？Whatleadtotheconflictbetweenparents’hopesandchildren’sideals?列举原因衔接词句型：1.Oneofthemainreasonsfor…isthat
5、…练：产生这一变化的一个主要原因是中国人民的生活水平得到了很大的改善。OneofthemainreasonsforthischangeisthatthelivingstandardofChinesepeoplehasbeenimprovedgreatly.2.Amongallthereasons,…playsavitalrolein…练：在所有原因中，大学扩招（theenrollmentexpansionofuniversities）起着关键作用。3.…isalsoanoticeablereason.练：公路上越来越多的汽车也是一个值得关注的原因。
6、Theincreasingnumberofvehiclesonroadisalsoanoticeablereason.4…havemuchtodowith…练：这些灾难的发生和我们人类对地球的所作所为有很大的关系。Thedisastershavemuchtodowithwhatwehavedonetotheearth.5.Dueto/Becauseof/Thanksto+名词性短语，…练：由于网络管理（networkadministration）的欠缺和网络安全(networksecurity)的薄弱，我们的信息可能被公开、偷窃或出售。Dueto/
7、Becauseof/Thankstothepoorinternetadministrationandweaknetworksecurity,ourinformationmightbeopen,stolenorsold.说明方法或提出建议句式引出方法句式(适用于主体段提建议)：1.Thefollowingmeasurescanbetaken/adoptedtosolvetheproblem.2.Inordertosettletheproblem/conflict,certainmeasuresshouldbetakenintime.3.Obvious
8、ly,itisnecessarytotakesomeeffectivemeasuresto…3.However,howsh
