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1SectionⅦWriting——介绍类说明文[文体指导]本单元的写作内容是要求能够写新闻报道式的介绍类文章。介绍类文章的目的是客观地介绍、解释事物，使读者获得知识和信息，一般采用正式文体。向别人介绍某一事物或某一件事情要用说明文的写作方法和技巧。说明文是运用说明的方法介绍事物或阐明道理。说明文分为实体事物说明文和事理说明文。说明文最大的特点就是它的说明性。实体事物说明文和事理说明文都出现在近几年的高考英语写作中。需注意以下三点：1．首先要仔细观察，抓住事物的内部特征和区别于其他事物的本质特征。2．要注意说明顺序。说明事物的过程时，常用时间顺序；说明事物的构造时，常用空间顺序；介绍事物的性质、种类和功能时，常用逻辑顺序。3．写英语说明文还要注意语言和时态的运用。说明文的语言要简洁朴实，表达清晰，层次分明。为了强调客观事实，说明文的时态多用一般现在时。[亮点句式]1．Since...，peoplehavealwaysenjoyed...2．Bythebeginningofthecentury，...3．Thehistoryof...goesback...4．Thebest...todayareprobably...5．Recentdevelopmentsinthefieldinclude...6．Inmyopinion，therewillbeareturnto...7．Whoknowswhatwillhappeninthefuture，but...8．Manyexpertspredictthat...9．Ifyoucontinuetodo...，youwill...10．Inconclusion，...[写作任务]随着科技的发展，机器人的作用日益重要。假如你们学校正在征集关于机器人构想方面的作文，你想象中的机器人主要是能够用来帮助幼儿和老年人的，因为他们需要更多的帮助，据此写一篇100词左右的文章阐明自己的观点。[审题谋篇]2体裁说明文时态以一般现在时为主主题介绍机器人人称第三人称为主结构第一段：机器人在生活中的作用；第二段：个人看法；第三段：总结。[遣词造句]Ⅰ.对接单元词汇1．接收；接管takeover2．例外exception3．陈列；展现display4．做某事有困难havedifficultyindoingsth.5．从……中获益benefitfrom6．总之inaword/inall/inbriefⅡ.巧用单元句式、语法(一)完成句子1．无疑，人们对于机器人有着自己不同的观点，我也不例外。Nodoubt,thepeoplehavetheirowndifferentideasaboutrobotsandIamnoexception．2．总之，人们相信在未来生活中机器人会帮我们更多。Inaword,itisbelievedthatthescienceofrobotwillhelpusmoreinthefuturelife.(二)句式升级3．Therobotswillplayaveryimportantroleinthefuture.Theywilltakeovermanydifficultjobsandmakepeople'slifeeasier.(用非谓语动词改写句子)Therobotswillplayaveryimportantroleinthefuture，takingovermanydifficultjobsandmakingpeople'slifeeasier.4．Therobotsarehopedtodisplaytheirskillsinlookingaftertheyoungerandelderpeople.Theyoungerandelderpeoplewillneedother'shelpmorethananyothergroup.(用it作形式主语和定语从句改写句子)Itishopedthatrobotswilldispalytheirskillsinlookingaftertheyoungerandelderpeople，whoneedother'shelpmorethananyothergroup.5．Theelderpeoplecanalsobenefitfromtherobots.Theelderpeoplehavedifficultyinmovingandcommunicating.(用定语从句改写句子)Theelderpeoplewhohavedifficultyinmovingandcommunicatingcanalsobenefit3fromtherobots.[妙笔成篇]【参考范文】Nowadaysthescienceofrobothasbeenarapiddevelopment.Ibelievetherobotswillplayaveryimportantroleinthefuture，takingovermanydifficultjobsandmakingpeople'slifeeasier.Nodoubt，thepeoplehavetheirowndifferentideasaboutrobotsandIamnoexception.Inmyopinion，itishopedthattherobotswilldisplaytheirskillsinlookingaftertheyoungerandtheelderpeople，whoneedother'shelpmorethananyothergroup.Forexample，therobotsareexpectedtobeabletoteachtheyoungerchildrenthebasicknowledge.Besidesthat，theelderpeoplewhohavedifficultyinmovingandcommunicatingcanalsobenefitfromtherobots.Inaword，itisbelievedthatthescienceofrobotwillhelpusmoreinthefuturelife.