【人教版】必修二：Unit4-Wildlife-protection-using-language课件

Unit4UsinglanguageWildlifeprotectionLanguagepointsTheylived

ontheearth

tensofmillionsofyearsago,

longbefore

humans

cameintobeing.

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。

Wedon’tknowwhentheworldcameintobeing.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C2.Theycouldtell

thisfromthewaytheboneswerejoinedtogether.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.LiaoningseveralTrueorfalse

FFTrueorfalse

3.Somescientistsaresuredinosaursdiedoutbecausetheearthgottoohotforthedinosaurstoliveonanymore.4.Dinosaursdiedoutquicklyabout65millionyearsagoandmanyanimalshavediedoutinthesameway.

thinkFT1.Listentothetapeandchoosethecorrectanswertocompleteeachsentence.P3041.C2.B3.C2.Whichisthebestfordescribingwhathappened?P303

2iscorrect.ListeningListeningtext

Onceuponatime,IlivedontheislandofMauritius.Iwascalled“dodo”.Thereweremanyofusandwewerefriendswithalltheotheranimalsonthisisland.Onedayanewanimalcametomyisland.HisnameisMan,andatfirstweseemedtobegoodfriends.WewenteverywheretogetherandIsharedmyfoodwithhim.However,Ibegantowonderwhyseveralofmydodofriendshaddisappeared.Thenthenumberofourspeciesbegantodecreasequickly.

IwassoworriedthatIaskedtheotheranimalsandtheyalltoldme,“yourfriendsarebeingkilledandeatenbyManwhileyouarehuntingforfood.”HadManeatenthem?Icouldn’tbelieveit!WhenIaskedMandirectly,heseemedsurprised.“Ihaven’tseentheotherdodoseither.”hesaid.“Maybesomeoneelsekilledthem.”IbelievehimbutwhenmoredodosdisappearedIsetatrap.IwentoffasifIwasgoingtohuntbutinsteadIhidintheforeatandwaited.SureenoughMancamealong.Heranafterthelastofmydodofriendsandkilledher.IfeltsoangrythatIrushedoutofmyhidingplaceandstraightatMan’sspear.Hekilledmetoo.Afterthattherewerenomoredodosintheworld.Somymottois:becarefulwhoyoutrust.SpeakingImagineyouarewiththedodoandyoutrytohelpit.Talkinpairsaboutwhatyoumightdo.Thesephrasesmightbeusefultoyou.Imagineyouarewiththedodoandyoutrytohelpit.Talkinpairsaboutwhatyoumightdo.Thesephrasesmightbeusefultoyou.IntentionPurposeI’mgoingtohelpthedodoIintend/mean/planto

hideitinacaveIwill

trapmanashekillsadodoIfeellikeattackingmanmyselfI’dliketoputmaninacageI’mreadytoteachmanhowtobefriendsIwouldrathernottellyouwhatIthinkofmanWriting

Nowwritealettertothedodototellhimhowyouwillhelphim.Howtoprotectthedodofromman

buildatraptocatchmanResult:manwillnotwanttoattackthedodoanymore.helphimbyattackingmansohewillleavethedodoaloneHowtoprotectthedofromman·gotoanotherisland·hidethedodoResult:dodoswillliveacalmandpeacefullife.Howtoteachmantohuntanotheranimal·givemanamealoffriedfish·encouragehimtojoinyouonafishingexpeditionResult:manwillleavedodosalone.DearDodo,IamwritingtoyoubecauseIhaveheardofyourproblems.IknowmanistryingtokillallthedodosandIwanttohelpyou.Herearemyideas.Samplelettertothedodo:First,Iwouldliketocomeandattackthemforyousothattheywillleaveyoualone.Iwanttobuildatrapandcatchthemandputtheminacage.Thentheywillnotf