【同课异构】人教版高中英语选修8课件：Unit 2《Section Two Learning about language》.ppt

unit2cloning discoveringusefulwordsandexpressions 1completethesentencesusingsuitablewordsfromthetext thefirstletterofeachwordhasbeengiven learningaboutlanguage 1 inmanyaspectsnaturalclones suchasidenticaltwins donotd greatlyfromman madeones 2 hewasc downwhentheprocedurehehadusedtoproduceamammalcloneendedinfailure 3 dustwilla inadesertedhouse 4 hermemoryissoexcellentthatshecouldrememberthee namesofthesideroadswepassedontheway iffer ast ccumulate xact 5 shewasnota pleasedatthecorrectionshemadetoherwork 6 greydecidedtomovetothecountrysideandhiswifemadenoo toit 7 accordingtotheconstitution itiscompulsoryforacitizentou militaryservice 8 themediahasam responsibilitytoreportnewstruthfully ltogether bjections ndertake oral 2replacetheunderlinedpartswithwordsthathavethesamemeaning rewritethesentencewhennecessary 1 comparedwithherfamily andespeciallyhernephew herniecedaisyisveryhonestaboutheropinions straightforward 2 thedecisionsoftheconservativefactoryleadersthathadbeenmadewithoutanyreasoncausedangeramongtheworkers thearbitrarydecisionsofthefactoryleaderscausedangeramongtheworkers arbitrary 3 istheoperahouseinthebusinessareaofbeijing 4 theproducerofthemediaprogrammedisagreedwithjenniferjoininginthechorus commercial madeanobjectionto 5 beforeyoucanmakealoaf youneedtogetsomeflour 6 youowetheladyanapology iwillnotallowyoutoleaveunlessyouapologizeforwhatyouhavedone obtain willforbid 3completethepassageusingthecorrectformofthewordsbelow complicatedfateattaincastaccumulatereformcarrier asfreddythefroggrewolder heonlyhadoneambitionleftto tocontinuehiscareerforever todothishethoughtthathewouldhavetoclonehimself thedoctorexplainedthatthiswasa procedurethatheshouldconsidercarefully shortlyafterfreddydidsomeresearch hediscoveredthe ofdollythesheep itseemedasif attain complicated fate aclonewasa ofmoreweaknessesthanitsoriginal freddywas downandlookedforsomewayto thecloningproceduretoavoidthisproblem sadlythisseemedimpossible sofreddymadeuphismindtoenjoyhissingingandto asmanyhappyexperiencesashecouldsothatwhenheretiredhewouldbeabletolookbackonhislifewithsatisfaction carrier accumulate cast reform 同位语从句theappositiveclause 1 同位语从句的定义在复合句中用作同位语的从句称为同位语从句 同位语从句是名词性从句的一种 它在句中起同位语的作用 discoveringusefulstructures 它一般放在fact news idea truth hope problem information belief thought doubt promise question等名词的后面 对前面的名词作进一步的解释 说明前面名词的具体含义 引导同位语从句的词有连词that how when where whether what等 e g thehopethathemayrecoverisnotgoneyet theproblemwhetherweshouldcontinuetodotheexperimenthasbeensolved ihavenoideawhenhewillcomeback 同位语从句有时被别的词把它和名词隔开 注意 thestorygoesthatwilliamtellkilledthekingwithanarrow wordcamethattheirteamhadwon 同位语从句的表现形式 由that引导thefactthatyouhaven tenoughtimetodotheworkissimplyunbelievable thehopethathemaycomehereisnotgoneyet 由whether引导thequestionwhetherweneedmoretimetodotheworkhasnotbeendiscussed 由when引导ihavenoideawhentheywillgo 3 同位语从句与定语从句的区别 同位语从句与定语从句在使用中常常混淆 我们可以从以下几个方面区别它们 同位语从句说明的名词大都是抽象名词 定语从句所修饰 限定的名词或代词有抽象的也有不抽象的 weexpressthehopethattheywillcometovisitchinaagain 同位语从句 thosewhowanttogopleasesigntheirnameshere 定语从句 同位语从句所说明的名词与从句没有逻辑关系 定语从句所限定的名词是从句逻辑上的主语 宾语 表语 定语 状语等 thenewsthattheywonthematchistrue 同位语从句 news和从句没有逻辑关系 thenewsthatyoutoldusyesterdayistrue 定语从句 news是told的逻辑宾语 同位语从句主要由连接词that引导 有时也可用when where who whether等引导 定语从句由关系代词或关系副词引导 thenheraisedthequestionwheretheyweretogetthemachineneeded 同 doyouknowtheplacewherehewasborn 定 同位语从句与先行词一般可变成一个完整句子 谓语动词用be的不同形式 heheardthenewsthattheirteamhadwon 此句可以变为一个表语从句 thenewswasthattheirteamhadwon 从引导词来看 引导词that在同位语从句中是连词 只起连接作用 无具体词义 that不可省略 that在定语从句中是关系代词 它在从句中充当一定成分 主语或宾语 有具体词义 作宾语时还可以省略 例如 a thefactory wevisitedyesterdayisachemicalone b thenews hewillleaveforshanghaiistrue that that 定语从句 同位语从句 answerkeyforexercise1onpage14 1 altogetherdollylivedforsixyears halfthelengthofthelifeoftheoriginalsheep 2 thefactthatsheseemedtodevelopnormallywasveryencouraging 3 thewholescientificworldfollowedtheprogressofthefirstsuccessfulclone dollythesheep 4 thencamethedisturbingnewsthatdollyhadbecomeseriouslyill answerkeyforexercise2onpage14 dollythesheepbecomeascientificbreakthroughwhenthenewsthatshehadbeenbornwasannouncedin1997 however theproblemthatshelaterdevelopedaseriouslungdiseasebotheredscientists on14thfebruary2003scientistsmadethedecisionthatdollyshouldbeputtosleep dolly sdeath likeherbirth wasboundtoraiseworries thefactthatdollydiedwhenshewasquiteyoungdisappointedpeopletheworldover scientistsholdthebeliefthatcloningmayleadtomanyimportantscientificbreakthroughsandmedicaltreatmentbutnowthequestioncomestotheirminds didshedieyoungbecauseshewasaclone besidesthat thereisalsoafiercedebateoverthequestionwhetherhumancloningexperimentsshouldbeallowed scientistsbelievehumancloningisjustamatteroftimebuttheassumptionthathumancloneshavealreadybeenbornhasn tbeenprovedyet 1997年多莉羊诞生的消息宣布后便成为一项科学突破 但是 后来多莉羊染上严重肺病的问题又使科学家们忧虑 2003年2月14日科学家们作出让多莉羊长眠的决定 多莉之死正如它的出世一样 肯定会带来焦虑 多莉早亡的事实令世人失望 科学家们认为克隆可能会带来很多重大的科学突破和医学疗法 但是现在他们不得不思考这样的问题 多莉早死是因为它是一只克隆羊吗 除此以外 关于是否应该允许进行人类克隆实验的问题也引起了激烈的争论 科学家们相信人类的克隆只不过是实践问题 但是克隆人已经问世的说法还没有被证实 suggestedanswerstoexercise3onpage14 1 ihadnoideathatshewouldcomenextweekforashortvisit 2 weheardthenewsthatawomantrappedundertheruinsforsixdayswasrescued 3 johntoldthetruththathefailedinthetest 4 thelawthathumancloningisforbiddenhasbeenpassedinourcountry 5 charlesagreedtotheregulationthathemusthavesafetytraining 6 yesterdayiwasgladtogetamessagethattheinterviewwentwell 7 thefactthatthepeopleintheearthquake hitareashadrebuilttheirhomesinspiredallofus 8 igottheimpressionthateveryoneinclassdidwellintheperformance answerkeyforexercise1onpage56 1 c2 e3 a f4 b5 a f6 dthefirstsentenced