Unit13We’retryingtosavetheearth!SectionA(1a—2d)【学习目标】1.学习并掌握下列单词：litter,bottom,fisherman,coal,public,ugly,advantage,cost,wooden,plastic2.能正确使用以下常用表达：thebottomof,befullof,usedtodosth.,playapartindoingsth.,cleanitup,bebadlypolluted,toomuchrubbishandwaste,turn…into,cutdown,takethebusorsubway,insteadof,remembertodosth.,makeadifference,leadto3.能熟练掌握并使用下列重点句式：1)Eventhebottomoftheriverwasfullofrubbish.2)Itusedtobesoclean!3)Everyoneinthistownshouldplayapartincleaningitup!4)Theairhasbecomereallypollutedaroundhere.I’mreallygettingworried.5)Tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.6)Ouractionscanmakeadifferenceandleadtoabetterfuture!【重点难点】·Talkaboutpollutionandenvironmentalprotection.·Usewhatwehavelearnedtotalkaboutpollutionandenvironmentalprotection.【新知预习】I.根据句意及词首字母完成单词。1.Eventheb______oftheriverwasfullofrubbish.2.Peoplearel_______intheriver.3.Othera_________ofbikeridingarethatit’sgoodforhealthanditdoesn’tcostanything!4.Inevertakew_______chopsticksorplasticforkswhenIbuytakeawayfood.5.Ouractionscanmakead_________andleadtoabetterfuture!【课堂探究】1.usedto…(1)usedto的意思是“过去经常”，其中的to是不定式符号，不是介词，所以其后接动词原形(不接动名词)。如：HeusedtoliveinParis.他过去一直住在巴黎。(2)usedto与beusedto的用法比较·usedto意为“过去经常”，其中的to是不定式符号，后接动词原形。如：HeusedtoliveinParis.他过去一直住在巴黎。·beusedto意为“习惯于”，其中的to是介词，后接动名词。如：Heisusedtolivinginthecountry.他已习惯于住在乡下。【针对练习】用usedto和beusedto填空I________getuplate,butnowI_________gettingupearly.2.should的用法：should后接动词原形。1）表示“应该，应当”Youshouldhelpyourmotherwiththehousework.你应该帮你母亲做家务。2）表示“可能，该(=willprobably)”Heshouldarrivesoon他可能很快就到了。3)should与oughtto的比较·除表示“万一”“竟然”等只能用should外，表示“应该，应当”“可能”等，两者可互换，只是oughtto的语气稍重。如：Yououghtto/shouldworkharderthanthat.你应当更努力地工作。·should强调主观看法，而oughtto强调客观要求。如：Weoughttogoandseemymotherinhospitaltomorrow,butIdon’tthinkwewill.我们按理应当在明天去看看住院的母亲的，但我主认为我们不会去。【针对练习】Everyoneinthistown_______playapartincleaningitup!【达标练习】I.单项选择。()1.Myfather_______adoctor,butnowheisawriter.A.wasusedtobeB.usedtobeC.isusedtobeD.wasusedtobeing()2.Look!_______people_______?A.Does,litterB.Are,litteringC.Did,litterD.Werelittering()3.Ouractionscan_______andleadtoabetterfuture.A.bemadeadifferenceB.makeadifferenceC.bemadeadifferentD.makeadifferent()4.Sofar,theair_______reallypollutedaroundhere.I’mreally_______worried.A.hasbecome;gettingB.havebecome;gettingC.hasbeenbecoming;gotD.hasbeenbecoming;got()5.Wethinkthateveryone_______usepublictransportation.A.mustB.shouldC.couldD.mightII.用所给单词的适当形式填空。1.Itusedto__________(be)soclean!2.Peopleare__________(litter)intheriver.3.Everyoneinthistownshould__________(play)apartincleaningitup!4.Iusedtobeableto__________(see)starsinthesky.5.Ithinksimplethingslike_________(bring)abagtogoshoppingcanhelp.III.根据所给汉语完成英语句子。1.甚至在河的底部也充满了垃圾。Eventhebottomoftheriver__________________rubbish.2.这个城镇的每个人都应该参与到清扫它当中来Everyoneinthistownshould____________________________cleaningitup!3.为了减轻污染，我们应该乘坐公交车或者...
