2023学年完整版九年级Unit13We'retryingtosavetheearth九上

Unit13We’retryingtosavetheearth!RevisionTask1:Readthepassage,underlinetheModalverbsandcircletheConjunctions(连词).Moreandmorepeoplerealizedtheimportanceofprotectingtheenvironment.Thegovernmenthasalsodevelopedsometoughnewlawsonenvironment.Althoughwehaveseenmanychangesinit,therearealotofthingswecandotohelp.Peoplemay/mightthinkthatbigthingsmustbedonetosavetheearth.Butmanyforgetthatsavingtheearthbeginswithsmallthings.Sowhatarethey?Forexample,youcansaveelectricitybyturningoffthelightswhenyouleavearoom.Youcouldalsousereusablebagsinsteadofplasticbags.Ithinkit'sagreatideathatyounowhavetopayforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,youcan/shouldrideyourbikeorwalk.Ifit'sfar,youcan/couldtakethebus.Allthesesmallthingscouldaddupandbecomebigthingsthatwould/canimprovetheenvironment.Let'sactionnow!Readthepassageagain.Findoutthewaystohelp:情态动词用法要点：1.must意为“必须，一定”，多用于命令，表示有把握的推测。2.should意为“应该”，表示劝告或建议。表示可能性较大的推测。3.can/could意为“会，能”，表能力或者委婉的请求。4.may/might意为“或许，大概，可能”，表对现在或将来某种可能性的推测。5.would意为“将要”，表示决心、愿望或询问，语气较委婉,常用于对未来的肯定猜测。6.haveto意为“不得不”，强调客观需要；有人称、时态等方面的变化。从语气程度来看：might<may<could<can<should<would<will<must<havetoTask2:Listenandcompletethesentences.PollutionproblemsWhatthestudentscandoIftheriversarepolluted,farmerscan'tusethefortheircrops.Insomeplaces,pollutionfromspreadsovercitiesandvillages.3.Thecarsontheroadsusesomuchoilandcause.4.Supportaschool:everyclasscollectswastewhichcanberecycledorusedagain.Thentheschoolsellsthewasteandusesthemoneytohelpstudentsinpoorareas.5.Studentslearnwaystosaveenergyandathome.Thatmeanslesswaste.Task3:Readthepassageandanswerthequestions.WhenisEarthHourheldeachyear?WhydopeopleswitchoffthelightsduringtheEarthHour?WhenandwherewasthefirstEarthHourheld?Whichcitiestakepartintheeventtoday?Task5:Discussing.Workingroups.Discussingwhatyoucandoaboutpollution.Eachgroupchooseonetopictotalkabout.Thenwritewaystocutdownonthesekindsofpollution.KindsofpollutionWaystocutdownwaterpollutionlandpollutionnoisepollutionairpollutionYoumaymakeashortreportlikethis:Tocutdownwaterpollution,weshould/can