高二英语人教版必修5课件：unit 1 listening .ppt

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1、人教课标高二必修5Unit1ListeningonPage41Unit1GreatscientistsRobertBriggsisveryinterestedinbiologyandespeciallyinthestudyofplants.TodayheistellinghisfriendZhangWeisomeexcitingnews.Beforeyoulistentothetapediscusswithyourpartnerhowyouwouldfindoutthenameofaflower.Newwordsint

2、helisteningpassage:species种类parrot鹦鹉blackbird乌鸦Nowlistentothetape.1.Whichofthefollowingstatementsdescribeswhatthislisteningpassageisabout?Giveyourreasons.A.Thisisaboutamanwhowantstonameaflower.B.Thisisaboutamanwhofindsaflowerandwantstoownit.C.Thisisaboutamanwhofi

3、ndsaflowerandwantstoknowifitisanewspeciesofflower.Itdoesnotgiveenoughinformation.Bisinaccurate.Listentothetapeagainandcompletethefollowingpassage.Tofindthenameofanunknownflowerfirstyoushouldaskyour_______teachertohelpyou.He/Shewilllookinaspecial_____writtenbyCarl

4、Linnaeus.Helivedin_______from____to_____.biologybookSweden17071778Hewasveryimportantbecausehesolveda_______problemforbiology.seriousListentothetapeforthethirdtimeandanswerthesequestions.1.IfRobertBriggsfindstheflowerinthebook,whatdoesthatmean?Itmeansthathisflower

5、hasalreadybeenidentifiedandhasaname.2.Howwouldheknowifhislilyisanewspecies?Hewouldknowbycheckinghislilyagainstotherliliesinthespecialistbook.Ifhislilyisdifferentitwillbeanewspecies.3.Whydoplantsallhavetwonames?Allplantshavetwonamesjustlikepeople.Thefirstisthegrou

6、pofflowerstheybelongtoandislikethefamilyname.Thesecondisthekindofflowerwithinthatgroupandislikeagiven/personalname.4.WhatwastheseriousproblemforbiologythatLinnaeussolved?BeforeLinnaeustherewasnowayoffindingoutwhetheraplantwasnewornot.Thiscausedproblemsbecausediff

7、erentscientistsclaimedthattheyhadfoundandnamedflowersfirst.Afterheorganizedhissystemitwaseasytodiscoverwhetheraplantwasnewornotandsowhohadtherighttonameit.ListeningTaskonPage44Makealistofallthegreatmathematiciansthatyouknowoforhavelearnedabout.Whatdoyouknowofthei

8、rachievements?DiscussionLeonhardEuler(1707-1783)NationalitySwissFieldsMathematicianandPhysicistpure(纯的)symbol(符号)Л(圆周率)sine(正弦)cosine(余弦)topology(拓扑学)angle(角)d