book8 unit2 using language

Welcome1.Doyouknowanythingaboutdinosaurs?2.HaveyoueverseenthefilmJurassicPark?WarmingupTeachingaims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Task1What’sthemainideaofeachparagraph?Para1explaintheimpossibilityofcloningdinosaursPara2concludethatit’sjustadreamPara3introducethetopicofthepassagefinsishReadthetext,thentellwhetherthefollowingsentencesaretrueorfalse.(Studentscandiscussinpairs.)1.Scientistsarestillexperimentingwithcloningmammalsbecausetheythinkitcanmakemoney.2.Theanimalsthathavedisappearedfromtheearth,likedinosaurs,canbebroughtbacktolifethroughcloning.3.Ifwecancloneanyextinctanimals,weshouldletthemliveinazoo.Task2TrueorFalseGivesomereasonswhyitiseitherimpossibleorunsuitabletoclonedinosaurs.Reason1:Reason2:Reason3:DNADiversityHabitatTask3自学目标2useyourownwordstoexplainthereasonswhydinosaurscan’tbeclonedGreatAuk(1844)Auroch(1627)Dodobird(1755)Quagga(1883)Theseanimalsareextinctones.Whichoneshouldbebroughtbacktolife?Andwhy?Discusswithyourpartner.Theexampleonthetextbookmighthelpyou.Discussion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3discussandlistthereasonsforwhichextinctanimalshouldbeclonedGreatAuk(1844)Aurochs(1627)Dodobird(1755)Quagga(1883)DiscussionFinishWritingLet’sbringthebacktolifeisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,Secondly,Finally,SoIthinkwouldbethebestchoicetobebroughtbacktolife.WritingLet’sbringthegreataukbacktolifeThegreataukisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,it’sfeathersdon’tabsorbwater,soit’susefulforprotectingclothesfromwater.Secondly,farmerscankeepitaschickentoearnmoney.Finally,itbecameextinctrecently,thereforeitsDNAisstillingoodcondition.SoIthinkthegreataukwouldbethebestchoicetobebroughtbacktolife.WritingLet’sbringthedodobacktolifeThedodoisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,it’sfriendlyandnotharmful,sowecankeepitaspetforchildren.Secondly,itslargeeggsandtastymeatcouldbedevelopedforfood.Finally,farmerscansellitsfeathersasdecoration.SoIthinkthedodowouldbethebestchoicetobebroughtbacktolife.WritingLet’sbringtheaurochsbacktolifeTheAurochsisthemostsuitableanimaltobebroughtbacktolife.Herearethereasons：Firstly,ithasthickhair,andwecanuseitshairtomakeclothes.Secondly,itslonghornscanbeusedfordecoration.Finally,it’sverylargeandstrong,thereforewecanmakeithelpfarmersploughthefield.SoIthinktheaurochswouldbethebestchoicetobebroughtbacktolife.WritingLet’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)summaryProtectingtheendangeredanimalsmeansprotectingourselves.1.Surfthenetandfindmoreaboutthecloneofextinctanimals.2.Finishexercisesonpage13.HomeworkHomework