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Unit4,Usinglanguage,Wildlifeprotection,Languagepoints,Theylivedontheearthtensofmillionsofyearsago,longbeforehumanscameintobeing.千百万年前，早在人类产生之前，它们就生活在地球上。,1)ontheearth在地球上。在earth,sun,moon等表达世界上独一无二的名词前,要加the。2)comeintobeing的意思是“开始存在;发生”。我们不知道这世界是什么时候存在的。Wedontknowwhentheworldcameintobeing.,3)longbefore“早在之前很久”。Itwill(not)belongbefore+从句(不久后将会.)从句用一般现在时或一般过去时,主句用一般将来时或一般过去将来时。,Ex.It_longbeforewe_theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;know,拓展：beforelong不久以后,C,2.Theycouldtellthisfromthewaytheboneswerejoinedtogether.他们能够从它们骨头的结合方式上识别出这点。tell意思为“辨别，识别”(常与from连用)有时很难把双胞胎区分开。Itissometimeshardtotellonetwinfromtheother.,1.Whendiddinosaurslive?Tensofmillionsofyearsago.2.Whendiddinosaursdieout?About65millionyearsago.,UsinglanguageReading,3.Howdiddinosaursdieout?Alargerockhittheearthandputtoomuchdustintotheair.Theearthgottoohottoliveon.,TherearemanydifferentspeciesofdinosaurandallofthemhavebeenfoundinChina.2.Notlongago,ararenewspeciesofbird-likedinosaurwasdiscoveredinHenanProvince.,Liaoning,several,Trueorfalse,F,F,Trueorfalse,3.Somescientistsaresuredinosaursdiedoutbecausetheearthgottoohotforthedinosaurstoliveonanymore.4.Dinosaursdiedoutquicklyabout65millionyearsagoandmanyanimalshavediedoutinthesameway.,think,F,T,1.Listentothetapeandchoosethecorrectanswertocompleteeachsentence.P3041.C2.B3.C2.Whichisthebestfordescribingwhathappened?P3032iscorrect.,Listening,Listeningtext,Onceuponatime,IlivedontheislandofMauritius.Iwascalled“dodo”.Thereweremanyofusandwewerefriendswithalltheotheranimalsonthisisland.Onedayanewanimalcametomyisland.HisnameisMan,andatfirstweseemedtobegoodfriends.WewenteverywheretogetherandIsharedmyfoodwithhim.However,Ibegantowonderwhyseveralofmydodofriendshaddisappeared.Thenthenumberofourspeciesbegantodecreasequickly.,IwassoworriedthatIaskedtheotheranimalsandtheyalltoldme,“yourfriendsarebeingkilledandeatenbyManwhileyouarehuntingforfood.”HadManeatenthem?Icouldntbelieveit!WhenIaskedMandirectly,heseemedsurprised.“Ihaventseentheotherdodoseither.”hesaid.“Maybesomeoneelsekilledthem.”IbelievehimbutwhenmoredodosdisappearedIsetatrap.IwentoffasifIwasgoingtohuntbutinsteadIhidintheforeatandwaited.,SureenoughMancamealong.Heranafterthelastofmydodofriendsandkilledher.IfeltsoangrythatIrushedoutofmyhidingplaceandstraightatMansspear.Hekilledmetoo.Afterthattherewerenomoredodosintheworld.Somymottois:becarefulwhoyoutrust.,Speaking,Imagineyouarewiththedodoandyoutrytohelpit.Talkinpairsaboutwhatyoumightdo.Thesephrasesmightbeusefultoyou.,Imagineyouarewiththedodoandyoutrytohelpit.Talkinpairsaboutwhatyoumightdo.Thesephrasesmightbeusefultoyou.,Intention,Purpose,Imgoingto,helpthedodo,Iintend/mean/planto,hideitinacave,Iwill,trapmanashekillsadodo,Ifeellike,attackingmanmyself,Idliketo,putmaninacage,Imreadyto,teachmanhowtobefriends,Iwouldrathernottellyou,whatIthinkofman,Writing,Nowwritealettertothedodototellhimhowyouwillhelphim.,buildatraptocatchman,Result:manwillnotwanttoattackthedodoanymore.,helphimbyattackingmansohewillleavethedodoalone,gotoanotherisland,hidethedodo,Result:dodoswillliveacalmandpeacefullife.,givemanamealoffriedfish,encouragehimtojoinyouonafishingexpedition,Result:manwillleavedodosalone.,DearDodo,IamwritingtoyoubecauseIhaveheardofyourproblems.IknowmanistryingtokillallthedodosandIwanttohelpyou.Herearemyideas.,Samplelettertothedodo:,First,Iwouldliketocomeandattackthemforyousothattheywillleaveyoualone.Iwanttobuildatrapandcatchthemandputtheminacage.Thentheywillnotfeellikekillinganydodosagain.,Second,IwishIcouldtakeyouawaytoanotherislandwhereyouwillbehappyandpeaceful.IwishIwerewithyounow.GoodlucktillIcome.Yourssincerely,XiaoHua,
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