高中英语 Unit 3 Science and nature Task课件 牛津版必修.pptx

Unit3ScienceandnatureTask,Writingaformalletter,Youmayhavetocorrectgrammarerrorsandspellingmistakes.Youmayhavetomakechangestotheinformationinthetext.Youmayneedtochangethestyleofthetext.,Whenyouarecheckingorcorrecting,Skillsbuilding1:Changingorcorrectingatext,Readthequestionsorinstructionscarefully.Listencloselywhenspellingsaregiven.Payattentiontowordsorphrasesthatintroducecontraryideas,suchas:No,Idontthinkso.Thatsnotright.Areyousure?ButIthinkitshouldbe,Tipsforlistening,Listentothephoneconversationandcorrectthenotesbelow.,Legscanbemadeupto8cmlonger.2.Thenewboneisnotasstrongasbefore.,18,3.A45-year-oldmandiedaftertryingtogrowby6cm.4.Patientscannotdoanyexerciseforthreeyears.5.Ittakes14monthstoincreaseyourheightby12cm.,35-year-old,two,18,6.Ageofpatients:16-55.7.5%ofoperationsareunsuccessful.8.CostsRMB185,000,60,8%,85,000,C:Accordingtomynotes,thedoctorsbreakthebonesofyourlegsandthenmakethemgrowbyabouteightcentimeters?M:Ithinkyouvegotthatwrong.Thedoctorscanmakethemgrowbyabouteighteencentimeters.,Tapescript:,C:Yes,Isee.So,theboneisnotasstrongasbefore?M:No,Theboneisasstrongastheoriginal.C:Oh!Ialsowrotethataforty-five-yearoldmandiedaftertryingtomakehislegsgrowbysixcentimeters?,M:No,hewasonlythirty-fiveyearsold.C:Thatsyoung!Aftertheoperation,patientscantdoanyexerciseforthreeyears.Isthatright?M:No!Fortwoyears.C:Wow!Igotalotofthingswrongthen.Whataboutincreasingyourheightbytwelvecentimetersinfourteenmonths?,M:No,eighteenmonths.C:Andtheageofthepatientswhocanhavethisoperation.Itisbetweensixteenandfifty-five.M:No,thatshouldbebetween16to60.C:Andhowmanyoperationsareunsuccessful?M:8%.,C:AndthecostisRMB185000?M:No,itsabout8500yuan.C:Phew!Ididgetalotofthingswrong,butIthinkthatsall.Thanksforhavingsuchagoodmemory.Iwillseeyoutomorrow.Bye.M:Ok.Bye,now.,Step1:confirminginformation,Listentotheconversationandcheckthenotesbelow.,2.Twinsareclonesofeachother,andarethesamecreatureorplant.3.Youcancloneadeafpersonandbringhimbacktolife.4.Youllprobablynevereatanyfoodfromclonedplants.,butarenot,cant,dead,ve,alreadyeaten,5.Cloningdoesnotoccurinnature.6.Manyofthegrapes,tomatoesandbananasinthesupermarketcomefromplantsthathadbeenclonedinthisway.,hasalwaysoccurred,potatoes,have,7.Cloningcanreallyhelpusinfarmconstruction,sothatwecanfeedmorepeoplewithcheaperandbitterfood.8.Wecancloneacowsothatitwillproducehigh-qualitymilk.,food,production,moreandbetter,/,produces,1F2F3T4F5T,PartB,Tapescritp:S=StudentS=ScientistStudent:Isntcloningdangerous?Scientist:Manypeoplehaveabadideaaboutcloning,butthisisbecausetheydontunderstandthenatureofcloning.Student:Whatdoyoumean?Scientist:Foronething,althoughacloneisanexactcopyofanotherplantoranimal，itisnotthesameplantoranimal-itisatwin.,Twinsareinfactclonesofeachother.Theylooklikeeachother,butarenotthesamecreatureorplant.Forexample,youcantcloneadeadpersontobringhimorherbacktolife.Student:Still,Iwouldntwanttoeatfoodfromclonedplantsoranimals!Scientist:Intruth,youveprobablyalreadyeatenfoodfromclonedplants.,Student:Really?Idontbelieveyou!Scientist:Cloninghasalwaysoccurredinnature.Manyplantsspreadbymakingclonesofthemselvespartoftheplantseparatesfromthemainplant,andgrowsbyitself.Farmershavemadeuseofthisideaforcenturies.Manyofthegrapes，potatoesandbananasthatyoubuyinthesupermarketcomefromplantsthathavebeenclonedthisway.,Student:Whataboutcloningthatisnotnatural-cloningdoneinlabs?Scientist:Itcanreallyhelpusinfoodproduction,sothatwecanfeedmorepeoplewithmoreandbetterfood.Forexample，wecancloneacowthatproduceshigh-qualitymilk,orcloneatypeofcornthatgrowsinpoorsoil.Insomecases,wecanevenimprovetheclonesinsomewaysothat,theycansurvivediseaseorhavebetterqualitiesthanbefore.Student:Wow,thatsoundsgreat!,Askingforpeoplesopinionse.g.Whatdoyouthink?/whatareyourthoughtsonthistopic?/Dontyouthinkso?/Doyouagree?/Doyoufeelthesameabout?/Isthatyouropiniontoo?,Skillsbuilding2:conductingadiscussion,Introducingnewideasintothediscussione.g.Anotherargumentisthat/Anotherwayoflookingatitis/Dontforget/Butwhatabout?/Ontheotherhand,/Wecanalso,Step2:reportingbacktoasciencejournal,InterviewformSafetyoffoodfromclonedplantsoranimals_Possiblesideeffects_Tastecomparedwithnormalfood_Cost_needforgovernmentcontrol_,Practice:,BVocabulary(pairwork),1.dangerous/nooneknowsyet/stillnotverysafe/quitesafe/verysafe/assafeasnormalfood2.causesweightgainorloss/healthy/nosideeffects3.justthesame/notasdelicious/moredelicious4.cheaper/moreexpensive/sameasnormalfood5.Needstrictcontrol/noneedforcontrol/sameasnormalfood/shouldbeforbidden,CQuestions(pairwork),1Dosehe/shethinkthatfoodfromclonedplantsoranimalsissafe?2Dosehe/shethinkthatthiskindoffoodhasanysideeffects?3Dosehe/shethinkthatthisfoodtastesthesameasnormalfood?4Whatdosehe/shethinkaboutthecostoffoodfromclonedplantsoranimals?5Dosehe/shethinkthatthiskindoffoodshouldbecontrolledbythegovernment?6Whatotherquestionsdidyouaskhim/her?,DDiscussionYoumaywanttomentionsomeofthefollowingpoints:,comparewithnormalfoodscientificstudyqualitycontrolfreedomofchoiceforcustomers,Skillsbuilding3:writingaformalletter,1.Whenyouwritealetter,whatinformationshouldyouinclude?,Youraddressthedatereceiversname,jobtitle(ifyouknowit)oraddressformalgreeting(name/little)formalendingyournameandsignature,Readthefollowingletterandlabelthepartswiththewordsinthepictureabove,101HighStreetLondon1May,2011,youraddress,thedate,jobtitle,Mr.FrankBrownPublicRelationsManagerSafewayLaboratories305QueensDriveLiverpool,receiversname,receiversaddress,DearMr.Brown,ImwritingtocomplainaboutyourplanstostartcloninghumanbeingsintheUKInsummary,IinsistthatyoutaketheopinionsofthepeopleoftheUKintoconsideration,andendthispracticeimmediately.Yourssincerely,JimDavidsonJimDaviddson,formalgreeting,formalending,signature,yourname,Step3:writingalet