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1、Unit1ThechangingworldTopic2SectionC一、Aimsanddemands：1、Newwords：social,supply,natural,worse,sofargovernment,takemeasurestodosth,thankstosb/sth,paragraph,opportunity,newborn,percent,offer.2、Keysentences：⑴…andaboutonefifthofthepeopleintheworldliveinChina.⑵…ourgovernmenthastakenmanymeasurestocontrol
2、thepopulation.⑶Thankstothepolicy,Chinaisdevelopingquicklyandpeople’slivingconditionsareimprovingrapidly.3、重点及难点：强化练习现在完成时的用法和高位数的表达法。二、自主预习：英汉互译：1、大约五分之一的人2、更少的生活空间3、同时4、带来很多其它的困难5、整个国家6、提供能源和水7、满足人们的日常需要8、越来越糟糕9、到目前为止10、采取很多措施11、beknownas12、workwellindoing13、多亏了这个政策14、一条很长的路要走15、成为最严重的社会问题之一16、
3、面临严峻的人口问题17、增长得越来越慢18、五分之二的……19、实施20、达到世界人口的20%21、处理三、合作探究探究一：WhatproblemdoyouthinkChina’slargepopulationhascaused?1、cause意思为__________同义词组__________2、doyouthink在句中作__________，后接__________语序。探究二：andaboutonefifthofthepeopleintheworldliveinChina.onefifth意为__________分数表达口诀：分子基数词，分母序数词，分子大于一，分母用复数试一
4、试：1/2_________1/3_________2/3_________3/4_________特殊情况：(a)half__________aquarter__________拓展：几分之几的……____________________练习：a.Twofifthsofthestudents__________(be)fromEurope.b.Twofifthsofwater__________(be)fromtheriver.探究三：Mostcitiesaremorecrowdedthembefore,andthetrafficismuchheavier.Crowded意为____
5、______，heavier意为__________思考：句中move__________比较级，much__________比较级探究四：Sofar,ourgovernmenthastakenmanymeasurestocontrolthepopulation.sofar意为__________，常与__________时态一起使用。练习：a.Sofar,I__________(make)severalgoodfriendsinmyschool.b.Sofar,China__________(have)thelargestpopulationintheworld.探究五：Ithasw
6、orkedwellincontrollingChin’spopulation.workwenin(doing)sth意为____________________区别：dowellin意为____________________=____________________四、当堂评价：（一）单项选择()1.Whathas_______theworld’spopulation.A、happeningtoB、takingplaceC、happenedtoD、takenplace()2.Hi,LiHong,XiaoGanghas_______calledyou,wherehaveyoubeen?
7、A、justnowB、nowC、justD、never()3.—Doyouknow_______thepopulationofChinawasin2005.—Ihavetoidea.A、thatB、howmuchC、whatD、howmany()4.Inourclass_______ofthestudentsaregirls.A、threefifthsB、threefifthC、thirdthreeD、thirdfifths()5.Thepop
