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5Unit1,ListeningonPage41,Unit1Greatscientists,RobertBriggsisveryinterestedinbiologyandespeciallyinthestudyofplants.TodayheistellinghisfriendZhangWeisomeexcitingnews.Beforeyoulistentothetapediscusswithyourpartnerhowyouwouldfindoutthenameofaflower.,Newwordsinthelisteningpassage:species种类parrot

2、鹦鹉blackbird乌鸦,Nowlistentothetape.1.Whichofthefollowingstatementsdescribeswhatthislisteningpassageisabout?Giveyourreasons.,A.Thisisaboutamanwhowantstonameaflower.B.Thisisaboutamanwhofindsaflowerandwantstoownit.C.Thisisaboutamanwhofindsaflowerandwantstoknowifitisanewspeciesofflower.,Itdoesnotgiveenoug

3、hinformation.,Bisinaccurate.,Listentothetapeagainandcompletethefollowingpassage.Tofindthenameofanunknownflowerfirstyoushouldaskyour_teachertohelpyou.He/Shewilllookinaspecial_writtenbyCarlLinnaeus.Helivedin_from_to_.,biology,book,Sweden,1707,1778,Hewasveryimportantbecausehesolveda_problemforbiology.,

4、serious,Listentothetapeforthethirdtimeandanswerthesequestions.,1.IfRobertBriggsfindstheflowerinthebook,whatdoesthatmean?Itmeansthathisflowerhasalreadybeenidentifiedandhasaname.2.Howwouldheknowifhislilyisanewspecies?Hewouldknowbycheckinghislilyagainstotherliliesinthespecialistbook.Ifhislilyisdifferen

5、titwillbeanewspecies.,3.Whydoplantsallhavetwonames?Allplantshavetwonamesjustlikepeople.Thefirstisthegroupofflowerstheybelongtoandislikethefamilyname.Thesecondisthekindofflowerwithinthatgroupandislikeagiven/personalname.,4.WhatwastheseriousproblemforbiologythatLinnaeussolved?BeforeLinnaeustherewasnow

6、ayoffindingoutwhetheraplantwasnewornot.Thiscausedproblemsbecausedifferentscientistsclaimedthattheyhadfoundandnamedflowersfirst.Afterheorganizedhissystemitwaseasytodiscoverwhetheraplantwasnewornotandsowhohadtherighttonameit.,ListeningTask,onPage44,Makealistofallthegreatmathematiciansthatyouknowoforha

7、velearnedabout.Whatdoyouknowoftheirachievements?,Discussion,LeonhardEuler(1707-1783),NationalitySwissFieldsMathematicianandPhysicist,pure(纯的)symbol(符号)(圆周率)sine(正弦)cosine(余弦)topology(拓扑学)angle(角)diagram(图表),Readthewordsbelowandlearntopronouncethemcorrectly.,pure(纯的)symbol(符号)(圆周率)sine(正弦)cosine(余弦)t

8、opology(拓扑学)angle(角)diagram(图表),ListentoPart1andtickthewordsbelowthatEulerintroducedintomathematics.,ListentoPart2andfillinthechartbelow.,topology,introducedmanynewsymbolsintomathswrotemorebooksthananyonebeforeorsincediscoveredanewbranchofmathematics,WhatwastheproblemofthecityofKonigsberg?,Ithadariverrunningthroughit.ThecentreofKonigsbergisanislandandasitpassestheislandtheriverbreaksintotwoparts.Sevenbridgeswerebuiltsothatthepeopleofthecitycouldgetfromoneparttoanother.Thepeoplewonderedifyoucouldwalkaroundthecitysothatyouwouldcrosseachbridgeonlyonce.,