秋季课程人教版高二英语选修六unit4-Global-warming-教案

适用学科高中英语适用年级高二适用区域人教新课标版课时时长（分钟）2课时知识点1单词学习及辨析2“it”的用法(2)3句型学习教学目标1.掌握本单元重点词汇的基本含义与用法；2.锻炼提升写作能力。教学重点1.重点的词汇与句型；2.书面表达的书写思路。教学难点如何准确地运用重要词汇和句型进行表达教学过程教学过程一、导入一、导入教学建议：导入有很多种方法，一般控制在十分钟左右为宜，可以采用各种形式，比如：教学建议：导入有很多种方法，一般控制在十分钟左右为宜，可以采用各种形式，比如：1、直接导入法。2、复习以往知识：可以从已学、已知的入手，与今天的教学进行对比。3、课前小测：可以针对学生学校里近期讲授的内容进行出题（以简单题和中档题为主，以10分钟左右为宜）进行测验，也可以针对基础知识进行复习提问，检查学生学校所学内容的掌握程度，进而展开教学。4、以近年来发生的重大事件为题导入。既考查了学生从社会生活中获取信息的能力，又激发了学生的学习兴趣，让学生马上进入学习状态等。以上的导入方法只是建议，大家选择其中一种或两种进行交叉使用即可。复习预习：1、上节课作业订正。2、it可以帮助构成强调句、陈述句的强调句型：______________________________________________需要注意的地方：*It在这一结构中作主句的主语，所以即使被强调部分是复数名词，也要用___或____

*如果被强调部分是时间、地点、方式或原因依然用_____；强调人时可以用____或__2)、一般疑问句的强调句型：______________________________________3)、特殊疑问句的强调句型：_______________________________________二、知识讲解二、知识讲解知识点知识点1重点单词1eq\x(quantityn.数量；量)inquantity大量quantitiesof＋名词＋复数谓语动词许多……aquantityof＋复数名词＋复数谓语动词/＋不可数名词＋单数谓语动词大量……QuantitiesoffoodandtentsweresenttoYa’anfromShandong.大量的食品和帐篷从山东运到了雅安。Mybrotherboughtalargequantityofbooks.我弟弟买了大量的书。2eq\x(tendvi.趋向；易于(belikelytodo)；照顾；vt.照顾；护理(carefor))tendtodo...倾向于做……；往往会……tendsb.照顾某人haveatendencytodosth.有做某事的倾向Thenurseskillfullytendedsoldiers’wounds.护士熟练地护理着那些士兵的伤口。3eq\x(opposevt.反对；反抗；与(某人)较量(todisagreewith))opposeAagainst/toB使A与B相对抗opposedoingsth.反对做某事beopposedto反对asopposedto与……相对照；而非Thekingcouldn’tbearanyonetoopposehim.国王不能忍受任何人反抗他。Thefatherisopposedtohisson’smarriage.爸爸反对儿子的婚事。4eq\x(statevt.陈述；说明；n.状态；情况)Itisstatedthat...据称……asstatedabove如上所述ina...state处于……状态makeastatement陈述；发表声明ForthefirstfewmonthsafterDanieldied，Iwasinastateofclinicaldepression.丹尼尔去世后的最初几个月里，我一直处于临床抑郁症的状态。Hestatedthatheknewnothingabouttheaccident.他声称对那起事故一无所知。5rangen．批；组；范围；山脉；v.变动，变化；排列；涉及beyond/outofone’srange/therangeofsb.超出某人的范围within/intherangeof在……范围之内rangefrom...to...从……到……之间变化rangebetween...and...在……到……之间变动Awiderangeofcolorsandpatternsareavailable.各种颜色和样式都有。Shehashadanumberofdifferentjobs，rangingfromcheftoswimminginstructor.她做过许多不同的工作，从厨师到游泳教练。图解助记6averageadj.平均的；普通的(normal)；典型的(typical)；n.平均数；平均水平；v.平均为；计算出……的平均数(beequalto...asanaverageanaverageof...……的平均数uptotheaverage达到平均水准above/belowaverage高于/低于平均水平on(the/an)average平均地；通常；按平均值Taketheaverageofthoseratiosandmultiplybyahundred.算出那些比率的平均值再乘以100。Americansharesrose，onaverage，by38%.美国股票价格平均上涨了38%。7eq\x(advocatevt.拥护；提倡；主张；n.支持者；拥护者；提倡者)Itisadvocatedthat...主张，提倡……advocatedoing...主张做……anadvocateof/for支持……的人Hewasastrongadvocateoffreemarketpoliciesandthemultipartysystem.他是自由市场政策和多党派制度的坚决拥护者。Mr.Williamsisaconservativewhoadvocatesfewergovernmentcontrolsonbusiness.威廉斯先生是个保守派，主张政府应减少对商业的控制。特别提醒advocate后不跟不定式，跟从句时，从句中用虚拟语气(should)do。8eq\x(circumstancen.环境；情况)in/undernocircumstances决不(＝never)，in/underthecircumstances在这种情况下；既然这样in/underanycircumstances在任何情况下ifcircumstancesallow/permit如果情况允许Thestrategywastoodangerousintheexplosivecircumstancesofthetime.在当时那种一触即发的形势下，采取那样的策略太危险了。Iwishwecouldhavemetunderhappiercircumstances.我真希望我们是在更愉快的情况下相识的。本单元单词词性变化归纳1.agreev.同意disagreev.不同意agreement/disagreementn.同意/不同意2.existv.存在existencen.存在3.statev.陈述，说明statementn.声明，阐述4.environmentn.环境environmentaladj.周围的，环境的environmentalistn.环境保护主义者知识点2知识点2重点短语1eq\x(comeabout发生(happen)；造成)Itcomesaboutthat...……发生。Howdoesitcomeaboutthat...？……是怎样发生的？comeacross偶遇；被理解whenitcomesto...当谈到……comeupwith想出(主意)；找到(答案)Asaresultofcarelessness，theprojectcollapsecameaboutinthelastspring.去年春天，由于疏忽大意造成了工程的坍塌。ThatcameaboutwhenwewenttoGlastonburylastyear.那是我们去年去格拉斯顿伯里的时候发生的事。特别提醒comeabout相当于happen或occur，均无被动形式。2eq\x(subscribeto同意；赞成；订购；捐助)subscribeforsth.认购……subscriber(杂志等)订购者，订阅者；(手机、电话等)用户；捐助者，资助者Areyougoingtosubscribetotheoperathisseason?你要订购这一季的歌剧票吗？Thesubscriberyoudialedispoweredoff.您拨打的用户已关机。3eq\x(onbehalfof(＝onone’sbehalf)代表……一方；作为……的代言人)I’mcallingonbehalfofMr.Black.我是代布莱克先生打电话来的。Iapologizetoyouonbehalfofthehotel.我谨代表旅馆向你们道歉。知识点3知识点3重点句子ItisOKtoleaveanelectricalapplianceonsolongasyouareusingit—ifnot，turnitoff！只要你在使用电器设备，你便可以把它开着。如果不用就把它关掉！eq\x(句型公式：solongas引导条件状语从句)solongas(aslongas)只要，引导条件状语从句。aslongas还可译为“长达，和……一样长久”。，asfaras远至；就……来说aswellas和……一样好；不但assoonas一……就……Inourlifewemaymeetmanyfailures，aslongaswetryourbest，there’snoneedtofeelregretforthesefailures.生活中我们可能遇到许多失败，但只要我们尽了力，就没有必要为失败而后悔。知识点4知识点4语法突破it的用法(2)It用于强调句型中1．Itis/was＋被强调部分＋that/who＋其他，这个句型可以强调主语、宾语、介词短语及状语。ImetTomintheparkyesterday.→ItwasintheparkthatImetTomyesterday.2．强调句的特殊疑问句句型为：特殊疑问词＋is/wasitthat/who＋陈述句Whatdidyouwanttofindyesterday?→Whatwasitthatyouwantedtofindyesterday?3．强调句与名词性从句的结合Iwanttoknowwhatyouwantedtofindyesterday.→Iwanttoknowwhatitwasthatyouwantedtofindyesterday.4．Itis/wasnotuntil＋被强调部分＋that...Ididn'trealizeshewasafamousfilmstaruntilshetookoffherdarkglasses.→ItwasnotuntilshetookoffherglassesthatIrealizedshewasafamousfilmstar.It常用的固定搭配1．makeit(1)在口语中相当于succeed，表示“成功做到；及时到达”等。(2)在口语中相当于fixthedatefor，表示“约定好时间”。Nomatterhowharditis，Iwillmakeitoneday.2．Takeiteasy.口语中相当于“Don'tworry.”或“Don'thurry.”，用来劝告别人，表示“不要慌、沉住气、别担心”。2·1·c·n·j·yTakeiteasy!Hewilldoitwell!3．Italldepends./Thatalldepends.口语中相当于“Ithasn'tbeendecidedyet.”表示“那得看情况，还未定下来。”中/华-21世纪1－Areyougoingtothecountrysideforaholiday?－Italldepends.4．It'suptosb.口语中，相当于“It'sdecidedbysb.”表示“由……决定/由……负责/取决于……”。－Shallwegooutfordinner?－It'suptoyou.三、例题精析三、例题精析教学建议说明：此处内容主要用于教师课堂的精讲，每个题目结合试题本身、答案和解析部分。教学建议说明：此处内容主要用于教师课堂的精讲，每个题目结合试题本身、答案和解析部分。例题1例题1【题干】Michael’snewhouseislikeahugepalace，______withhisoldone. A．comparing B．compares C．tocompare D．compared【答案】D【解析】考查非谓语动词。compare的逻辑主语是句子的主语Michael’snewhouse，且二者之间为动宾关系，所以应该用过去分词作状语。例题2例题2【题干】Becauseofthesnowhedrovejust280kilometersin5hours，sothe______speedwas56kmph.A．basic B．Whole C．Total D．average【答案】D【解析】average“平均的”。句意：由于大雪，他5小时才开车走了280公里，因此平均速度是每小时56公里。例题3例题3【题干】______theyouth______therisingsunateightornineo’clocka．m.，MaoZedongexpressedhisgreathopefortheyoungmen.A．Comparing；with B．Compared；toC．Compared；with D．Comparing；to【答案】D【解析】compareAtoB“把……比作……”，用现在分词作状语，因为主语MaoZedong与compare之间是主动关系。例题4例题4【题干】______foodarestoredinthetunnelinwinter.A．Largequantitiesof B．AgreatmanyC．Alargenumberof D．Quiteafew【答案】A【解析】largequantitiesof后面既可接可数名词复数，又可接不可数名词；其余三项均接可数名词复数。四、课堂运用四、课堂运用教学建议说明：在对课堂知识讲解完，把握了重点突破了难点以及练习精讲了之后，再用练习进行课堂巩固教学建议说明：在对课堂知识讲解完，把握了重点突破了难点以及练习精讲了之后，再用练习进行课堂巩固或检测，根据学生情况建议分3个难度层次：易，中，难。基础基础根据句子结构，用括号内所提供词的适当形式填空1)The________pointedoutthatthechangeof________willcausecertaingreat________disaster.(environment)2)Itwas______thatthenew-electedpresidentofU.S.Amadea________announcingnewpoliciestoreducetheconsequenceofeconomycrisis.(state)3)ThoughthetwoPartyusually_______witheachother，theyhavereachedan________onthelevelsofgreenhousegasestheywillallow.(agree)4)Inthesurvey，peoplefounditfunnythatmanyofthelongest-lastingmarriagesin______arethosebetweenpeoplewho________infrequentquarrel.(exist)【答案】1)environmentalist；environment；environmental2)stated；statement3)disagree；agreement4)existence；exist巩固巩固根据课文内容完成下面语法填空，注意单词拼写和词语用法：When1(compare)withmostnaturalchanges，thatthetemperatureoftheearthroseaboutonedegreeFahrenheitduringthe20thcenturyisquiteshocking.Andit’shumanactivity2hascausedthis3(全球的)warmingrather4arandombutnatural5（现象）.DrJaniceFosterexplainsthatweaddhuge6ofextracarbondioxidetotheatmospherebyburningfossilfuels.Fromthesecond7（图表）andthediscoveryofCharlesKeeling，allscientistsbelievethattheburningofmoreandmorefossilfuelshasresulted8theincreaseincarbondioxide.Greenhousegasescontinuetobuildup.Somethinkthatthetrendwouldbea9(灾难).Ontheotherhand，GeorgeHambley10(声明)thatmorecarbondioxidewouldencourageagreaterrangeofanimalsandbringusabetterlife.【答案】1.compared2.that 3.global 4.rather 5.phenomenon 6.quantities7.graph 8.in 9.catastrophe 10.states拔高拔高句子仿写1.【原句】Thereisnodoubtthattheearthisbecomingwarmerandthatitishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫无疑问，地球是在变暖，而地球变暖正是人类活动导致而成，并非是一种无规律的自然现象。[模仿要点]句子结构：thereisnodoubtthat…andthat…句式+itis…that强调句【模仿1】毫无疑问，圣诞节的庆祝活动是一个很好的学习方式的西方文化；而且庆祝圣诞节，让我们的生活更有趣。_______________________________________________________________________________答案：ThereisnodoubtthatthecelebrationofChristmasisagoodwayoflearningthewesterncultureandthatitisthecelebrationofChristmasthatmakesourlifemoreinteresting.【模仿2】毫无疑问，太多的电脑游戏会对学生的健康有不良影响，而且玩电脑太多花费他们太多的时间导致花在学习上的时间太少。_______________________________________________________________________________答案：Thereisnodoubtthattoomanycomputergamescanhaveabadeffectonstudents’healthandthatitisplayingtoomuchcomputerthatcoststhemtoomuchtimeresultingintoolittletimeonstudy.2．【原句】Somebyproductsofthisprocessarecalled“greenhouse”gases，themostimportantoneofwhichiscarbondioxide.这个升温过程的一些副产品就叫做“温室”气体，其中最重要的是二氧化碳。[模仿要点]句子结构：主句，+themost+adj.of+which引导的定语从句【模仿1】一些可能的措施应采取以防止我们的地球越来越热，而其中最重要的措施之一是限制私家车的使用。_______________________________________________________________________________答案：Somepossibleactionsshouldbetakentokeepourearthfromgettingwarm，themostimportantoneofwhichistolimitstheuseofprivatecars.【模仿2】一些良好的学习方法应采取以改善你的学习，而其中最有效的方法之一是与你的同学讨论。_______________________________________________________________________________答案：Somegoodlearningmethodsshouldbeadoptedtoimproveyourstudy，themosteffectiveoneofwhichistodiscusswithyourclassmates.3.【原句】Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.他们还赞同正是由于越来越多燃烧化石燃料导致了二氧化碳的增加。[模仿要点]句子结构：宾语从句中的强调句【模仿1】文章表明是人类的活动对村庄造成的环境破坏。_______________________________________________________________________________答案：Thepassageindicatesthatitishuman’sactivitiesthathasresultedintheenvironmentaldestructiontothevillage.【模仿2】我们都同意的是年轻一代应该负起振兴国家的责任。_______________________________________________________________________________答案：Weallagreethatitistheyoungergenerationthatshouldtakeuptheresponsibilitytobuildupthecountry.课堂小结课堂小结教学建议说明：教师对本节课应掌握的知识作一个小结，将本堂课应掌握的内容做一个概要陈述。教学建议说明：教师对本节课应掌握的知识作一个小结，将本堂课应掌握的内容做一个概要陈述。课后作业教学建议说明：讲解完本章的知识点，布置课后作业，让学生巩固知识，建议也分三个层次，每个层次3-5题。课后作业教学建议说明：讲解完本章的知识点，布置课后作业，让学生巩固知识，建议也分三个层次，每个层次3-5题。基础基础语境填空1．Somecommon______(phenomenon)intheworldarestillnotcompletelyunderstoodbyhumanbeings.2．Thereare______(quantity)ofgoodsinthatshopforcustomerstochoosefrom.3．Hehadbeenillforalongtimeandconsequently(consequence)hewasbehindinhiswork.4．Sherefusedtomakea______(state)tothepoliceincasesheincriminated(连累)herself.5．Herpostasageneralmanager______(steady)afterthreemonths.6．Someexpertsthoughtthatpollutionposesathreattothecontinued______(exist)ofthisspecies.7．Withthedevelopmentofeconomy，now______(electricity)applianceshaveenteredintoordinaryfamilies.8．There’salotof______(disagree)amongpoliticiansonthisissue.9．Nocountrycanaffordtoneglectthe______(educate)ofitsyoungpeople.10．Theycontributedalotoffoodandclothingtotherefugees(难民)andtheir______(contribute)willcertainlyhelptherefugeeslivethroughthewinter.【答案】1．phenomena2．quantities3．consequently4．statement5．steadied6．existence7．electrical8．disagreement9．education10.contributions选词填空eq\x(comeaboutgouponbehalfofputupwithsolongas)1．Thepriceofoilhas______byover50percentinlessthanayear.2．______alltheguestshere，Iwishtothankyouforgivingusthiswarmreception.3．Wewanttoknowhowit_____thathumansspeaksomanydifferentlanguages.4．“Iwillnot______yourbadbehaviouranylonger.”saidthegirlangrily.5．Idon’tcareabouttheprice，_____thecarisingoodcondition.【答案】1．goneup2．Onbehalfof3．cameabout4．putupwith5．solongas巩固巩固1．______isnodoubtthattheearthisbecomingwarmerbutthereisafiercedebateoverwhetheritishumanactivitythathascausedthisglobalwarming2.______whetheritisjustanaturalphenomenon.ManyscientistslikeDr.JaniceFosterbelievethatpeoplehavecaused3______increaseintheearth’stemperaturebyburningfossilfuelslikecoal，naturalgasandoiltoproduceenergywhosebyproducts4.______(call)“greenhouse”gases，themostimportantone5.______(be)carbondioxide.Thesegasestrapheatfromthesunandthereforewarmtheearth，without6.______theearthwouldbeaboutthirtythreedegreesCelsiuscooler7.______itis.But8.______(increase)amountofextracarbondioxidemeanst