辛军峰上课用.ppt

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1、welcome白银十中辛军峰Lesson50TheWorldIsaBigPlace!教学目标1.认识七大洲，四大洋的英文名称；2.学会小数和分数的部分表达法；3.了解更多的世界地理知识。教学难点1.大洲大洋的表达法；2.分数小数的表达法。北南AsiaEuropeAfricaNorthAmericaSouthAmericaAustraliaAntarcticacontinentsoceans太平洋印度洋北冰洋大西洋大西洋ThePacificOceanTheIndianOceanTheArcticOce

2、anTheAtlanticOceanLookandsay1234567ABCCDB.swf1.Howmanypeoplearethereintheworld?2.Wheredoallthepeoplelive?3.Howbigaretheworld’soceans?4.Howmanydesertsdoestheworldhave?5.What’stheworld’sbiggestisland?6.What’stheworld’slongestriver?Listentothetapeandanswe

3、rthequestions:AboutsixbillionOnland.Oceanscoveraboutthree-quartersoftheearth’ssurface.20percent.Greenland.TheNileRiver.Readandfinishtheexercises:1.Scientistspredicttheworld’spopulationwillhave_______By2025,therewillbe9.1billionpeopleby_______.2.About__

4、_______oftheworldisland.Thelandthatisvery____iscalleddesert.Thedesertscover________________oftheearth’ssurface.3.Thereare______continents.Theyare_____,______,________,________,NorthAmerica,SouthAmericaandAntarctica.Antarcticaisworld’s________andtheworl

5、d’s________continent.4.Thereare_____mainoceans.Theycover____________oftheearth’ssurface.Theyarethe_____________,the________________,the_______________andtheArcticOcean.The______________isthebiggestocean.The_______________isthesmallestocean.5.Theworld’s

6、biggestislandis_____________.6.TheNileRiverinAfricaisthe_________river.7.8billion2050one-thirddrytwentypercentofsevenAfricaAsiaAustraliaEuropecoldestdriestfourthree-quartersPacificOceanAtlanticOceanIndianOceanPacificOceanAtlanticOceanGreenlandlongestLe

7、arningTips1.populationn.人口What’sthepopulationoftheworld?=Howmanypeoplearethereintheworld?2.Increasev.增加、增大、增强increaseby增加了……increaseto增加到……3.分数的表达法1/2onehalf=onesecond1/4aquarter=onefourth2/5twofifths3/7threeseventh分子用基数，分母用序数；分子大于1，分母加s.4.小数的读法point3.

8、454.680.36threepointfourfivefourpointsixeightpointthreesixKnowledgeaboutcontinentsandoceans:Doyouknowthesevencontinentsintheworld?_____isthebiggestcontinent.IthasthehighestpointontheEarthintheHimalayasMountains.ThispointiscalledMountEve