人教新课标选修7第3单元课件市公开课一等奖省赛课获奖课件

UndertheSeaUnit3第1页Wordspreviewsnorkelaquariumanecdoteannualvi.戴潜水通气管潜泳n.(潜水艇或潜水者)通气管n.水族馆；养鱼缸n.轶事；奇闻adj.每年；按年度计算n.年刊；年鉴第2页Today,we’regoingtotakealookattheworldunderthesea.So,areyouready?第3页Now,weareonasnorkelingtripunderthesea.We’llcomeacrossagreatvarietyofmarineanimals.Comeon!第4页Dolphins海豚Whatarethey?第5页Turtle海龟Look.It’scomingtowardsus.第6页Seahorse海马What’sthis?第7页Squid鱿鱼第8页Seastar海星Thislooksbeautiful!第9页Jellyfish水母第10页Coral珊瑚第11页Angelfish天使鱼Differentkindsoflittlefish第12页Anemonefish海葵鱼第13页Clownfish第14页Asharkiscoming.Lookout!It’sdangerous.第15页Henoticedus.We’dbetterleavehimalonebeforeit’stoolate.Bye,MrShark!第16页Wearesafenow.AndIcaughtaseastarneartheshore.第17页Ifyoulike,wherecanyougotoseemoreabouttheoceanlife?onaboattripinbooks,ontheInternet,intheOceanPark,onTVetc.atanaquarium第18页

Ingroups,makealistofplantsandanimalsthatliveundertheseathatyouandyourclassmateshaveseeninanyofthewayslistedabove.Sharewhatyouknowabouttheseplantsandanimals.第19页What’shappeninginthepictures?AKillerWhale第20页Whalesarehuge,intelligentseamammals.Theybreatheairthroughblow-holesintolungs(unlikefishwhobreatheusinggills).Whaleshavesmooth,shiny,streamlined(流线型）bodiesthatmoveeasilythroughthewater.Whatisawhale?第21页Therearetwotypesofwhalesalivetoday:toothedwhales(齿鲸类)andbaleenwhales(须鲸类).Toothedwhaleshaveteethandasingleblowhole.Theyfeedoneatfishandotherseamammals.Baleenwhalesarelargerthantoothedwhales.Theyarefilterfeeders(滤食者)thatusebaleentosieve(过滤)

food,andhavetwoblowholes.Classificationofwhales第22页Killerwhales(虎鲸)belongtotoothedwhales,whoarethelargestofthedolphinsandkingofthesea,biggestcarnivore(食肉动物)ofthesea,killingallkindsofanimalsinthesea,eventhehugebluewhale,liketigersonland,workinginateam.第23页Averagelifespan:50to80yearsSize:7to9.7mWeight:upto6tons第24页Killerwhales第25页Baleenwhalesarecharacterizedbyhavingbaleenplatesforfilteringfoodfromwater,ratherthanhavingteeth.Baleenwhalesaregenerallylargerthantoothedwhales,andfemalesarelargerthanmales.Thisgroupincludesthelargestknownanimalspecies,theBlueWhale.第26页

Baleenwhales第27页Whatdoyouthinkishappeninginthepicture?Readtheintroductionofthepassageonpage19andthenfillinthechartbelow.第28页WriterVocationStyleTimePlaceMainidea

ClancyAwhalerAnecdotesAtthebeginningofthe20th

centurySoutheasterncoastofAustraliaThekillerwhaleshelpedthewhalerskillbaleenwhalesBriefintroductionofthepassage第29