英语选修8第二单元using-language-导学案

临沂国际学校高二英语组主备人：朱琳时间：2017年4月18日Adaptionisthekeytosurvival.适者生存。Unit2TheReturnofTheDinosaurs?导学案Learningaims:1tolearnsomeusefulwordsandexpressionsandsomeinformationaboutcloning2toimprovereadingability3learntolovescienceandnature课前自主预习重点单词1nolongerinexistence____________2abelieforfeelingthatsth.istrueandthatsthwillhappenalthoughthereisnoproof____________3theactofcontrollingordirectngaccordingtorule_________4happeningatthebeginning:first__________5adisadvantageorproblemthatmakessth.alessattractiveidea______________6fair,practicalandsensible________________重点短语1状况很好（坏）__________2不时偶尔____________3使复活__________4使……刻骨铭心__________5白费力气___________6最初要求_______________临沂国际学校高二英语组主备人：朱琳时间：2017年4月18日Adaptionisthekeytosurvival.适者生存。完成句子1scientistsarestillexperimentingwithcloningmamals.要点提取：experimentwith/onsth.做实验例句仿写：有人认为在动物身上做实验会引起不必要的痛苦。Somepeoplefeelthat__________________animalscausesunnecessarysuffering.2Thedesadvantageisthtifthereisanewillnesssomeoftheseanimalsmaydie,butotherswillsurviveandpassontheabilitytoresistthatdiseasetothenextgeneration.要点提取：thedisadvantageisthat…其缺点是……Passon…to…把…...转交（递给，传给……）例句仿写：骑自行上班的优势是我们能过低碳生活。________________________wecanlivealow-carbonlife.看完那本事后请传给我。__________thebook______mewhenyouhavefinishedit3basedonwhatweknownow,youcannotcloneanimalsthathavebeenextinctlongerthan10,000years.要点提取：basedon+what引导宾语从句例句仿写：____________wasshownonthesurvey,wecanmakeabetterunderstadingaboutthething_______wehavedonetonature.课堂互动探究临沂国际学校高二英语组主备人：朱琳时间：2017年4月18日Adaptionisthekeytosurvival.适者生存。Task1:GroupDiscussin:Infact,doyouthinkthereisanypossibilitythatscientistsbringextinctdinosaurstolifeasaclone?Why(not)?Task2:FastReading1MatchthemainideaofeachparagraphPara1explaintheimpossibilityofcloningdinosaursPara2concludethatit’sjustadreamPara3introducethetopicofthepassage2Whichofthefollowingistheauthor'sattitudetocloningextinctanimals?Thewriterofthetext_____A.isexcitedbythepossibilityofcloningfierceandextinctanimals.B.believesthatextinctanimalscanbebroughtbacktolifebycloning.C.thinksitimpossibleorunsuitabletocloneextinctanimalslikedinosaurs.D.dreamsofdinosaursreturningtotheearthTask2:careful-reading1Givesomereasonswhyitiseitherimpossibleorunsuitabletocloneextinctanimals.Reason1:PerfectDNAis_______toobtain.临沂国际学校高二英语组主备人：朱琳时间：2017年4月18日Adaptionisthekeytosurvival.适者生存。Reason2:Alltheclonedanimalshave_________arrangementofgenessothatthereis_____________diversityinthegrouptoovercomedifficulties,whichmeanstheymightdieof_________illness.Reason3:Alackof_______________2Basedonwhatweknownow,youcannotcloneanimalsthathavebeenextinctlongerthan_______years.3Thechanceofdinosaursreturningtotheearthismerely__________.4Whyshouldn’tyoucloneanextinctanimalunlessthereisenoughdiversityinthegroup?5Whycan’tyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years?After-reading1DiscussionAreyouinfavorofcloningextinctanimals?Nowinpairsdiscusswhichanimalsdescribedbelowareworthrestoringbymeansofcloning.Chooseoneanimalfromthetableonp16andusetheinformationtohelpyouarguewhythisanimalshouldberestoredtotheearth.2writeanshortessayonwhatyouhavediscussed.