仁爱英语九年级上册Unit-1-Topic-2-Section-C.ppt

Unit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.SectionC城北学校留住蓝色地球

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Thepopulationindevelopingcountriesis________thanthatindevelopedcountries.Whichcountryhasthelargestpopulation?What’sthepopulationofChina?larger1a1.Beforeyoureadthepassage,discussthequestionswithyourpartner.1)WhydoesChinacarryouttheone-childpolicy?2)WhatsocialproblemsdoyouthinkChina’slargepopulationhascaused?

预习导纲阅读短文，在文中找到并写出下面的短语：1.三十多亿人口_________________________________2.几乎世界人口的一半___________________________3.大约五分之一的人_____________________________4.更少的生活空间_______________________________5.带来很多其它的困难___________________________6.整个国家(民族)_______________________________7.提供能源和水____________________________8.更加拥挤_____________________________________9.到目前为止___________________________________10.采取很多措施________________________________11.控制人口数量________________________________12.beknownas…________________________________13.workwellindoing…________________________14.多亏了这个政策______________________________15.一条很长的路要走____________________________

读和翻译以下句子，注意观察划线局部，然后进行探究：一.That’salmosthalfoftheworld’spopulation._________andaboutonefifthofthepeopleintheworldliveinChina._________探究：onefifth五分之一，half二分之一分数表达口诀：分子_____，分母_____，分子大于一，分母用____试一试：1/2_____________1/3_____________2/3___________3/4_________________特殊情况：(a)half___________aquarter___________拓展：几分之几的…:分数+ofthe+名词。当做主语时，单复数由名词来决定。练习：a.Twofifthsofthestudents____________(be)fromEurope.b.Twofifthsofwater____________(be)fromtheriver.那几乎是世界人口的一半而且世界上大约五分之一的人生活在中国基数词序数词复数a/onehalfonethirdtwothirdsthreefourths/threequarters二分之一四分之一areis

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