2023學(xué)年完整版九年級Unit13We'retryingtosavetheearth九上

Unit13We’retryingtosavetheearth!RevisionTask1:Readthepassage,underlinetheModalverbsandcircletheConjunctions(連詞).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:情態(tài)動詞用法要點：1.must意為“必須，一定”，多用于命令，表示有把握的推測。2.should意為“應(yīng)該”，表示勸告或建議。表示可能性較大的推測。3.can/could意為“會，能”，表能力或者委婉的請求。4.may/might意為“或許，大概，可能”，表對現(xiàn)在或?qū)砟撤N可能性的推測。5.would意為“將要”，表示決心、愿望或詢問，語氣較委婉,常用于對未來的肯定猜測。6.haveto意為“不得不”，強調(diào)客觀需要；有人稱、時態(tài)等方面的變化。從語氣程度來看：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