book8-unit2-using-language.ppt

cloning Welcome Whataretheadvantagesofcloning Haveplantsofsimilarqualitytosell Usefulforresearchonnewplantspecies Makeendangeredspecieskeepon Helpfamilieswhowanttohaveachild Havecuresforseriousillnessesinhumans Revision 1 Doyouknowanythingaboutdinosaurs 2 HaveyoueverseenthefilmJurassicPark 1 Canyouseetheminourreallife Why 2 Doyouthinkitispossibletoclonedinosaurs Ifyes doyouthinkthat sgoodforhumanbeings Why Thereturnofthedinosaurs Teachingaims教学目标 1 Understandthepassageandknowmoreaboutthecloningofdinosaursandtheproblem 理解文章 了解恐龙的克隆及存在的问题 2 Usetheirownwordstoexplainthereasonwhythedinosaurscan tbeclonedsuccessfuland 用自己的话来解释恐龙不能被成功克隆的原因 3 Listthereasonstobringoneofthefourextinctanimalsbacktolife 在四种灭绝动物选出最应该被克隆的动物并且列出原因 自学目标1understandthepassage 自学建议 1 获取文章大致信息2 第一遍快读了解故事大意3 第二遍细读获取细节信息自学禁忌 1 一口气从头一字一句读到尾 2 见到生词就查字典自学时间 5分钟 Thewriterofthetext A isexcitedbythepossibilityofcloningfierceandextinctanimalsB believesthatextinctanimalscanbebroughtbacktolifebycloningC thinksitimpossibleorunsuitabletocloneextinctanimalslikedinosaursD dreamsofdinosaursreturningtotheearth Listentothetext thenchoosethecorrectanswer Listening Task1 What sthemainideaofeachparagraph Para1explaintheimpossibilityofcloningdinosaursPara2concludethatit sjustadreamPara3introducethetopicofthepassage finsish Readthetext thentellwhetherthefollowingsentencesaretrueorfalse Studentscandiscussinpairs 2 Scientistsarestillexperimentingwithcloningmammalsbecausetheythinkitcanmakemoney Task2 FillintheblanksortellTrueorFalse 1 Thepopularityoffilmssuchas inwhichascientistclonesseveralkindsof dinosaurs proveshowtheidea amixtureof JurassicPark extinct struck fearandexcitement intopeople s hearts thecloningof mammalsisstillanewscience Theanimalsthathavedisappearedfromtheearth likedinosaurs canbebroughtbacktolifethroughcloning Para2 Unfortunately withwhatweknownow thisiseitherimpossibleorunsuitable Evidence 2 The isthatyouneedperfectDNA 3 All ofcloningananimalwillbe ifthereisnotenough inthegroupto initial efforts invain diversity requirement overcome illnesses Givesomereasonswhyitiseitherimpossibleorunsuitabletoclonedinosaurs Reason1 Reason2 Reason3 DNADiversityHabitat Task3 自学目标2useyourownwordstoexplainthereasonswhydinosaurscan tbecloned Advantage anewillness some die otherssurviveandpassontheabilitytoresist Drawback thesamearrangementofgenes dieof Conclusion Thechanceofdinosaurseverreturningtotheearthismerelyadream title Adream Evidence GreatAuk 1844 Auroch 1627 Dodobird 1755 Quagga 1883 Theseanimalsareextinctones Whichoneshouldbebroughtbacktolife Andwhy Discusswithyourpartner Theexampleonthetextbookmighthelpyou Discussion PK 讨论建议 1 通读四种已灭绝动物的信息 2 挑选出自己认为最应该克隆的动物 3 仔细阅读该动物的相关信息 展开大胆联想 给出原因来阐述为什么这种动物最适合被克隆 能够带来什么样的好处 4 互相比较选择的动物 陈述各自的观点 讨论时间 5分钟 自学目标3discussandlistthereasonsforwhichextinctanimalshouldbecloned GreatAuk 1844 Aurochs 1627 Dodobird 1755 Quagga 1883 Discussion PK 0 30 60 120 90 Finish Writing Let sbringthebacktolifeisthemostsuitableanimaltobebroughtbacktolife Herearethereasons Firstly Secondly Finally SoIthinkwouldbethebestchoicetobebroughtbacktolife Writing Let sbringthegreataukbacktolifeThegreataukisthemostsuitableanimaltobebroughtbacktolife Herearethereasons Firstly it sfeathersdon tabsorbwater soit susefulforprotectingclothesfromwater Secondly farmerscankeepitaschickentoearnmoney Finally itbecameextinctrecently thereforeitsDNAisstillingoodcondition SoIthinkthegreataukwouldbethebestchoicetobebroughtbacktolife Writing Let sbringthedodobacktolifeThedodoisthemostsuitableanimaltobebroughtbacktolife Herearethereasons Firstly it sfriendlyandnotharmful sowecankeepitaspetforchildren Secondly itslargeeggsandtastymeatcouldbedevelopedforfood Finally farmerscansellitsfeathersasdecoration SoIthinkthedodowouldbethebestchoicetobebroughtbacktolife Writing Let sbringtheaurochsbacktolifeTheAurochsisthemostsuitableanimaltobebroughtbacktolife Herearethereasons Firstly ithasthickhair andwecanuseitshairtomakeclothes Secondly itslonghornscanbeusedfordecoration Finally it sverylargeandstrong thereforewecanmakeithelpfarmersploughthefield SoIthinktheaurochswouldbethebestchoicetobebroughtbacktolife Writing Let sbringthequaggabacktolifeThequaggaisthemostsuitableanimaltobebroughtbacktolife Herearethereasons Firstly ithasbeautifulskinasazebra sowecanuseitsskinasdecoration Secondly themeatisverytasty andwewillhaveanotherdeliciousdish Finally itjustbecameextinctin1883 thereforewecaneasilygetitsperfectDNA SoIthinkthequaggawouldbethebestchoicetobebroughtbacktolife 教学目标再现 1 Understandthepassageandknowmoreaboutthecloningofdinosaursandtheproblem 理解文章 了解恐龙的克隆及存在的问题 2 Usetheirownwordstoexplainthereasonwhythedinosaurscan tbeclonedsuccessfuland 用自己的话来解释恐