免费下载网址http://jiaoxue5u.ys168.com/Unit13We’retryingtosavetheearth（第1课时）本学期第课时本单元第1课时上课日期：_________教学目标：一、目标(一)、能掌握以下单词和短语：Tolearnthefollowingwordsandexpressions.bottom,coal,public,ugly,cost,advantage,method,cruel,harmful,afford.二、教学重点1.Howtousethefollowingwordsandexpressions:cost,advantage,harmful,afford,usedto,playapartin…2.tounderstandthepassageonPage99.三、教学难点1.Howtousethefollowingwordsandexpressions:cost,advantage,harmful,afford,usedto,playapartin…2.tounderstandthepassageonPage99.情感态度和价值观Afterlearningthispart,everystudentwillbeawareoftheserioussituationofpullutionanddeterminedtotakeactiontoprotectourearthfronnowon.教学过程:Step1Lead-in1)Showsomepicturesaboutpollutionandaskstudentstodiscusswhat’sthedangerofeachkindofpollution.2)Herearesomewordsarerelatedtodifferentkindsofpollution.Writethemintheboxbelow,andyoucanaddmorewords.loudmusic,littering,buildinghouses,cars,ships,mobilephones,rubbish,factories,planes,smoking.AirpollutionNoisepollutionWater3)Role-playthefollowingconversationandmakeyourownconversationsaboutthekindsofpollutionabove.A:Theriverwasdirty.Eventhebottomoftheriverisfullofrubbish.B:Butitusedtobesoclean.A:Yes,butpeoplearelitteringintheriver.B:Everyoneinthetownshouldplayapartincleaningitup.Step2.Reading解压密码联系qq1119139686加微信公众号jiaoxuewuyou九折优惠！淘宝网址：jiaoxue5u.taobao.com免费下载网址http://jiaoxue5u.ys168.com/1)Fast-readingNowturntopage99andreadthepagequicklytofindanswerstothesheet.2)careful-reading3)Studyingusefulwordsandexpressions.①costv价钱为，花费n.价钱，代价；花费，费用Thecostofaloafofbreadhasincreasedfive-fold..Badgesarealsoavailableatacostof£2.50.徽章也有卖的，2.5英镑一枚。It'sgoingtocostmeover$100,000tobuynewtrucks.买几辆新卡车将花掉我10万多美元。②harmfuladj.对…有害的；能造成损害的；不利；不良Smokingisharmfultoourhealth.吸烟对人类的健康有害。③usedtodo过去一向，过去时常，过去曾（而现在不再）做Whousedtodoyourlaundry?谁过去一直为你洗衣服？Sheusedtowa...
