2015-2016学年高中英语 Unit4 Wildlife protection using language课件 新人教版必修2(1).ppt

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1、Unit4UsinglanguageWildlifeprotectionLanguagepointsTheylivedontheearthtensofmillionsofyearsago,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。Wedon’tknowwhentheworldcamei

2、ntobeing.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2.Theycouldtellthisfromthewaytheboneswerejoinedtog

3、ether.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.UsinglanguageReading3.Howdiddinosaursdieout?Alargerockhittheearthandputtoo

4、muchdustintotheair.Theearthgottoohottoliveon.TherearemanydifferentspeciesofdinosaurandallofthemhavebeenfoundinChina.2.Notlongago,ararenewspeciesofbird-likedinosaurwasdiscoveredinHenanProvince.LiaoningseveralTrueorfalseFFTrueorfalse3.Somescientistsaresuredinosaursdiedoutbecaus

5、etheearthgottoohotforthedinosaurstoliveonanymore.4.Dinosaursdiedoutquicklyabout65millionyearsagoandmanyanimalshavediedoutinthesameway.thinkFT1.Listentothetapeandchoosethecorrectanswertocompleteeachsentence.P3041.C2.B3.C2.Whichisthebestfordescribingwhathappened?P3032iscorrect.

6、ListeningListeningtextOnceuponatime,IlivedontheislandofMauritius.Iwascalled“dodo”.Thereweremanyofusandwewerefriendswithalltheotheranimalsonthisisland.Onedayanewanimalcametomyisland.HisnameisMan,andatfirstweseemedtobegoodfriends.WewenteverywheretogetherandIsharedmyfoodwithhim.

7、However,Ibegantowonderwhyseveralofmydodofriendshaddisappeared.Thenthenumberofourspeciesbegantodecreasequickly.IwassoworriedthatIaskedtheotheranimalsandtheyalltoldme,“yourfriendsarebeingkilledandeatenbyManwhileyouarehuntingforfood.”HadManeatenthem?Icouldn’tbelieveit!WhenIasked

8、Mandirectly,heseemedsurprised.“Ihaven’tseentheotherdodoseither.”hesa