仁爱版九年级上册英语Unit1 Topic2 SectionC 学案 无答案.doc

Unit1Topic2SectionC精品学案学习目标：1.继续学习现在完成时。2.学习分数和百分数表达法。3.继续讨论有关人口增长的问题并引导学生树立正确的人口观念。重点：如何通过语境和构词法猜测生词、短语大意并感知其用法。如何在阅读过程中找出文章主题和各个段落的Topicsentence。难点：在口头报告和书面写作时能合理使用topicsentence和supportingdetails组织文章结构。课前预习：1.阅读1a1c和Part2找出下列短语并翻译背熟：social________natural_______worse_________government_________offer______supply_________paragraph___________opportunity_________newborn________percent__________onefifthof__________becauseof/thanksto______________takemeasurestodosth.____________workwellin(doing)sth.________________livingspace_________.beknownas…__________dailyneeds.___________naturalenvironments_____________controlthepopulation______________newbornbaby____________socialproblem_____________.2.阅读1a试着回答短文前面的问题和以下问题。思考：本篇短文主要论述的是__________(A.Theworld’spopulationB.China’spopulationC.China’spopulationproblems短文的每一自然段的主题句分别是(完成1b)1).__________________________2).__________________________3).___________________________学习指导：1).WhatsocialproblemdoyouthinkChina’slargepopulationhascaused?点拨：cause带来引起导致。同义词组：bringabout练习：a.Airpollutioncancausemanydiseases.译：________________________b.Thebadweatheriscausingtroubleformanyfarmers.译：___________点拨：doyouthink在句中做插入语2).…andaboutonefifthofthepeopleintheworldliveinChina.译：__________点拨：onefifth五分之一分数表达口诀：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+of…练习：a.Twofifthsofthestudents________(be)fromEurope.译：____________b.Twofifthsofwater________(be)fromtheriver.译：__________________链接：小数表达用_____________百分数表达用______________3).Mostcitiesaremorecrowdedthanbeforeandthetrafficismuchheavier.译：_____________点拨：crowded拥挤的；heavier更繁重的。思考：句中more__________比较级;much___________比较级练习：近年来过多的人口造成了拥挤的城市和繁重的交通。译：________________4).Sofarourgovernmenth