英语人教版九年级全册Unit13 We’re trying to save .ppt

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1、Unit13We’retryingtosavetheearth!SectionA1a-2d（第1课时）noisepollutionairpollutionwaterpollution1a.Writethewordsrelatedtodifferentkindsofpollutionintheboxbelow.(Pairworkorgroupwork)loudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones_

2、_______________________________________________________________________________________________________________________________________loudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephonesReadtheconversationquickly,findouttheanswe

3、rtothequestion.Whatkindsofpollution arementionedinthisconversation?2d.Airpollutionandwastepollution.2.Readtheconversationagainandcompletetheblanks.Takethebusorsubwayinsteadofdriving;rideabike.bringabagtogoshopping;onlyusewoodenchopsticksorplasticforksathome;T

4、hrowrubbishinthebins…1.Wearetryingtosavetheearth.我们正在努力拯救地球。【解析】trydoingsth尝试做某事（不一定付出很大努力）trytodosth尽力做某事（强调付出一定的努力设法完成）想一想?尽某人最大的努力做某事try_______________2.Butitusedtobesoclean.但它过去是如此干净。【解析】usedto的意思是___________,其中to是不定式符号，不是介词，所以其后要接____________。beusedto的意思

5、是__________，其中to是介词，其后要接__________【合作探究】one’sbesttodosth.习惯干某事过去常常做某事动词原形doing2.He____gooutwithhisparents,butnowhe____stayingathomealone.A.usedto;isusedtoB.isusedto;usedtoC.useto;isusedtoD.isusedto;isusedto√—HowmuchisthetickettoCentralPark?—Aone-wayticket____

6、__$40,andyoucan______another$20foraround-trip.A.costs,payB.cost,spendC.pay,spendD.spends,pay【合作探究】3.It’sgoodforhealthanditdoesn’tcostanything!它对身体有好处并且不会花费任何东西。costvt.1.花费；价格为；【拓展】take/spend/cost/pay的用法都可以表示“花费”，但用法却不尽相同。①spend的主语必须是______，常用于_______________

7、____________________________________②cost的主语是物或某种活动，还可以表示“值”，用于____________________________________________________（注意：cost的过去式及过去分词都是cost,并且不能用于被动句。）③take后面常跟双宾语，常见于_____________________________________________④pay的基本用法是：_____________________________________

8、________________人Sb.spendtime/moneyonsth.Sb.spendtime/moneydoingsth.costsb.money.Ittakessb.sometimetodosth.paymoneyforsth.√4.Tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdrivi