九年级英语上册-Unit2Topic3课件-仁爱版

Unit2LovingOurPlanetTopic3Pollutioncausestoomanyproblems.WelcometomyclasstolearnEnglish.Topic3Wouldyouliketobeagreenerperson?Let’slearnthenewlesson.SectionASectionBSectionCSectionD11139458267121017161514131819202.Howshouldwedotoprotecttheenvironment?1.Iscuttingdowntreesharmfultohumanbeings,animalsandplants?Everyoneshouldcareforwildanimalsandplantmoretrees.Weshoulddoeverythingwecantoprotecttheenvironment.Don’tspitanywhereinpublic.Asweknow,noneofuslikespollution.Humanshavecometorealizetheimportanceofprotectinganimalsandplants.Yes,itis.Treescanstopthewindfromblowingtheearthaway.Andalotofwatercanbesavedbyforests.Thetreescanpreventthewaterwashingtheearthaway.So,let’sprotecttheenvironmenttogetherandbeagreenerperson!1alook,listenandsay.(JaneisastudentofRen’aiInternationalSchool.AjournalistfromRen’aiEnglishPostisinterviewingheraboutenvironmentalprotection.)Journalist:Hi,Jane.CouldIaskyouafewquestions?Jane:Certainly.Journalist:Weallknowthatyou’reworkingforanorganizationthatprotectstheenvironment.Canyoutelluswhatyoudothere?Jane:Well,mymainjobistohelpspreadthemessageaboutprotectingtheenvironment.Forexample,thethreeRs—reduce,reuseandrecycle—areimportant.Journalist:Sowhatkindsofthingscanwedoathometoprotecttheenvironment?Jane:Weshouldreducethewasteweproduce.Forexample,weshouldusebothsidesofpaperandreuseplasticbags.Journalist:Whatcanstudentsdoatschool?Jane:Ithinkrecyclingcannotonlyprotecttheenvironmentbutalsosavemoney.Soweencouragethemtocollectwastepaperandsoftdrinkcans.Thenwesortthemsothattheycanberecycled.Journalist:It’skindofyoutodothat.Thankyou!Jane:It’sapleasure.Everyoneissupposedtodothat.environmentalprotection—环境保护environment——environmental（名词）（形容词）protect——protection(动词)(名词)Workfor…“为······工作，坚持不懈的努力工作”。Weshouldworkforpeace.Weshouldworkforourmotherlandtomakeherstrongerandmorebeautiful.Weallknowthatyou’reworkingforanorganizationthatprotectstheenvironment.我们应该为和平而努力。我们应该为祖国而努力工作，使她更强大，更加美丽。123Reducev.“减少，降低，使处于······状态”，结构为reducesthto…。Theyarereducingpollution.Shereducedthepriceofthecoatto50dollars.他们正在减少污染。她把那件大衣的价格降到了50美元。encouragesb.todosth.鼓励某人去做某事TheteachersoftenencouragethestudentstoworkhardatEnglish.Sheusedtoencouragemetobelievemyself.can做情态动词时是“能，可以，会”的意思；做名词是“罐头，罐子”的意思,是可数名词。Icanswimnow.Iboughtacanofcokeyesterday.sortv.“把······分类，拣选”。n.“种类，类别”Wesortthethingstomakethemrecycle.老师经常鼓励学生努力学习英语。他过去常常鼓励我相信自己。我会游泳。昨天我买了一罐可乐。Notonly…butalso…“不仅······而且·······”。是并列连词，可以连接并列的各种成分。♣.连接并列主语时，谓语动词需和邻近的主语保持一致，即“就近原则”。1.Notonlywebutalsoshehasbeentherebefore.2.NotonlyhebutalsoIamgoodatEnglish.notonlyAbutalsoB=BaswellasA(连接并列主语于前者保持一致)1’Sheaswellaswehasbeentherebefore.2’IaswellasheamgoodatEnglish.♣其它形式。Henotonlysaidit,butalsodidit.WestudynotonlyChinesebutalsoEnglish.Sheisnotonlyastudent,butalsoateacher.Icannotonlysingbutalsodance.不仅我们而且她以前也到过那里。不仅他而且我也擅长英语。它不仅说了而且做了。我们不仅学汉语而且学英语它不仅是一名学生而且是一名老师我不仅会唱歌而且会跳舞句型It’s+形容词+for/ofsb.todosth.中的形容词说明不定式时用“for”;说明逻辑主语sb的特征时用“of”.It’sveryimportantforustokeepthebalanceofnature.（保持生态平衡）YouareverykindtohelpmewithmyEnglish.It’sverykindofyoutohelpmewithmyEnglish.It’snecessaryforustolearnEnglishwell.TolearnEnglishwellisnecessaryforus.It’skindofyoutohelpme.=Youarekindtohelpme.综合上面的内容我们可以看出，含of的句型可以转换为of后的sb.作主语，而不能转换不定式做主语；反之，含for的句型可以转换为不定式做主语，而不能转换sb作主语。保持生态平衡对于我们来说是很重要的在英语方面帮助我你实在太好了。对于我们来说学好英语是有必要的。帮助我你实在太好了。besupposedtodosth.“应当做某事，应该做某事，必须做某事。Youweresupposedtobehereanhourago.你本该在一小时前就到这儿。Ithoughtyouweresupposedtogetherealittleearlier.我认为你应该早点到这练习：Youarenotsupposed________loudlyinthelibrary.A.SpeakB.speakingC.tospeakD.spoken联想：supposev.(根据所知）“认为，推断，料想”Isupposethepricewillgoup.我料想价格会上涨。在反意疑问句中，陈述部分是Ithink/believe/suppose引导的宾语从句，附加疑问句部分的主语应与从句保持一致。而正常情况应与主句保持一致。IsupposehecomesfromtheU.S.A.,doesn’the?Idon’tsupposethathe’sgoingtohurtanyone,ishe?C1bWorkalone.Fillintheblanksaccordingto1a.1.Thejournalistis_______Janeabout_________________.2.Jane’smainjobis__________________________.3.Weshoulduse____________andreuse___________athome.4.Atschoolstudentscancollectwastepaperand____________.5.Recyclingisanexcellentwaynotonlyto__________butalsoto__________.interviewingenvironmentalprotectiontohelpspreadthemessageaboutprotectingtheenvironment.bothsidesofpaperplasticbagssoftdrinkcansprotecttheenvironmentsavemoney2.Workalone.Fourpeoplearetalkingaboutrecyclingitems.Listentothetapecarefullyandcheck(√)them.TypeofrubbishRecycleReusedReducedPlasticbags√PapercupsCansNewspaperGlassbottles√√√√3.Workalone.Jointhesesentenceswithor,and,butorwhile,makingsomenecessarychanges.Example:About35%oftherubbishinHongKongcanberecycledeveryyear.Therestcan’t.About35%oftherubbishinHongKongcanberecycledeveryyearwhiletherestcan’t.1.Noiseisakindofpollution.It’sharmfultoourhearing.2.Theearthisbeautiful.Peoplehurttheearthnow.3.Workhard.Youwillfailtheexam.4.Shewasbusycooking.TheywerewatchingTV.5.Noddingtheheadmeansagreement.Shakingtheheadmeansdisagreement.6.Somethingswehavedonearegoodfortheearth.Somearebad.7.Hurryup.Youwillmissthebus.8.Airpollutionhasbecomeaseriousproblem.Thegovernmenthasdonesomethingusefultoprotecttheenvironment.andbut