2023学年完整公开课版Unit13We'retryingtosavetheearth2

Unit13We’retryingtosavetheearth

天闻数媒

Leading-inLookatthefollowingpictures天闻数媒天闻数媒天闻数媒天闻数媒noisepollution天闻数媒airpollution天闻数媒waterpollution天闻数媒Role-playthefollowingconversationandmakeyourownconversationsaboutthekindsofpollutionabove.天闻数媒A:Theriverwasdirty.Eventhebottomoftheriverisfullofrubbish.B:Butitusedtobesoclean.A:Yes,butpeoplearelitteringintheriver.B:Everyoneinthetownshouldplayapartincleaningitup.天闻数媒活动探究Fast-readingNowturntopage99andreadthepagequicklytofindanswerstothesheet.天闻数媒天闻数媒QuestionsAnswersWhereshark’sfinsoupispopularNumbersofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20-30years.Twoenvironmentgroupswhichareagainst

finningPossibleanswers:SouthernChina70millionover90percentWildAidandtheWWF天闻数媒careful-readingReadthepassageagainandfillinblanks.Usingthefollowingwordsso,although,ifbut,when.天闻数媒①Manypeopledonotrealizetheyarekillingawholeshark___________theyenjoyabowlofshark’sfinsoup.②Sharksareatthetopofthefoodchain,_____________iftheirnumbersdrop,theocean’secosystemwillbeindanger.sowhen天闻数媒③Manythinkthatsharksaretoostrongtobeendangered,__________theyarewrong.④___________therearenoscienfiticstudiestosupportthis,alotofpeoplebelievethatshark’sfinsaregoodforhealth.⑤Sharksmaydisappearoneday__________wedonotdosomethingtostopthesaleof

shark’sfins.butAlthoughif天闻数媒延伸拓展Studyingusefulwordsandexpressions.天闻数媒①costv价钱为，花费n.价钱，代价；花费，费用

Thecostofaloafofbreadhasincreasedfive-fold..一条面包的价钱增长了4倍。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。天闻数媒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？Sheusedtowashdishesinarestaurant.她曾经在餐馆里洗过盘子。④affordvt.买得起；担负得起；提供；给予Wecouldn'taffordtobuyanewcar.我们买不起新的车。Wecan'taffordtowait.我们等不起。Myparentscan'tevenaffordanewrefrigerator.我父母甚至买不起一台新冰箱。天闻数媒⑤playapartin扮演某角色;与……有关，对……有影响I'dliketoplayapartintheirdiscussion.我愿意参与他们的讨论。Educationisplayingabigpartinenvironmentalprotection.教育在环境保护中起着很大作用。HeplayedapartinhisfavoriteTVshow.他在他最喜欢的电视节目中扮演了一个角色。天闻数媒随堂练习Translatethefollowingphrases:对……有害买得起……在……中起作用过去常常解决问题起作用听说在……顶部在……底部切下，割下beharmfultoaffordsthplayapartinusedtodosolveproblemsmakeadifferenceatthetopofatthebottomofcutoff天闻数媒小结与作业1.