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ID:57033225
大小:6.31 MB
页数:82页
时间:2020-07-27
《英语课文总结课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit3TextOceansofSandTalkaboutthedesertheatstrokesweatingHuntingincolddesertShelterfromsnowstormStoringfoodBrainstormingworkingroupsoffour,discussandwritedownthewordsorexpressionsthatoccurtoyouwhenyoureadtheword“desert’.Usethesketchbelowasaguideinyourdiscussion.sanddry/droughtsunho
2、tcoldnorainclearskyplantsoasis(绿洲)pastureanimalbarren1.Whyaredesertwindsdry?2.Desertareveryhotduringtheday,whyaredesertnightsoftencold?3.Howplantssurviveindeserts?4.Wheredosmallanimalsliveindeserts?Whydotheylivethere?5.Wheredopeopleliveinsomedesert?6.Howtopreventdesertification?1.W
3、hyaredesertwindsdry?Somedesertsarein“rainshadow”areawherethewindshavelostwhatmoisturetheyhadcrossinghighground.2.Desertareveryhotduringtheday,whyaredesertnightsoftencold?Becauseclearskiesallowheattoescapeintotheatmosphere.蒲公英dandelion3.Howplantssurviveindeserts?saguaromesquit(e)墨西哥
4、合欢树属植物;牧豆树Someseedsofplantslieinthegroundforyearswaitingfortherain.Otherplantsstorewaterintheirleaves,stemsorroots.Manyclosetheirporesduringthedaysotheydonotlosemoisture.4.Wheredosmallanimalsliveindeserts?Whydotheylivethere?Theyliveinholesorburrows.Holesorburrowstrapmoistureandstay
5、coolerthanthegroundabove.5.Wheredopeopleliveinsomedesert?aroundoases(fertileareas)formaroundwellsorsprings6.Howtopreventdesertification1.Toplanttreesandhedges(树篱:由一排密种的灌木或长得低的树形成的一道栅栏或分界线)2.Toreducetheamountofanimalstoprotectcropsfromgrazing.3.Tobuildlinesofstonesacrossslopestoprev
6、entrainwaterrunningawayandallowittosoakintothesoil.LearningnewwordsLookatthepicturesandguesstheEnglishnames.trytomemorizethemasmanyasyoucan蒲公英dandeliondandelion树形仙人掌saguarosaguaro仙人掌cacti(复数)cactusCactushasspines墨西哥合欢树属植物;牧豆树mesquit(e)mesquit(e)洞穴burrowburrowburrow(冷血的卵生)爬行动物reptil
7、ereptilereptilereptile浦乳动物mammalmammalmammalsidewindersidewindersidewinder(美国西南部产的一种)响尾蛇沙漠中的绿洲oasis(pl.oases)oasis[əʊ’eɪsɪs][əʊ’eɪsɪ:z]lizardlizardlizard蜥蜴骆驼camelcamel牧场,草原pasturepasture鹅卵石pebblepebble沙砾gravelgravelgravelWritedownthewordsinblanksaccordingtothemeaning1.Notgoodenough
8、toproducecrops.___________
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