2022-2023学年仁爱版英语九年级上册-Unit-2-3-课件

Unit2.3Howimportantistheforest?Fast-reading•Underlinethetopicsentenceofthepassage.Forestsarethelungsoftheearth.Careful-reading1.Answerthequestionsonpage50.2.Underlinethenewwordsandimportantphraseswhilereading.Howdoyouunderstand“Forestsarethelungsoftheearth”?Forestscanremovecarbondioxidefromtheairandmakeoxygen.1bListento1aandchoosethecorrectanswers.1.JaneandMichaelaremainlytalkingabout_______.A.whyweshouldshutofftheelectricitywhenweleaveB.whatweshouldusewhenwegoshoppingC.howtobeagreenerperson2.Actionsspeaklouderthanwordsmeans____.A.wordsarenotasloudasactionsB.todowellisbetterthantosaywellC.actionscanspeak,butwordscan’tdoitCB1.Whatwillagreenerpersondowhenheleavesaroom?2.Whatwillyoudoifyoutravelashortdistance?Read1aandanswerthefollowingquestions.Hewillshutofftheelectricity.Iwillwalkorrideabikeinsteadoftakingabusorataxi.Insteadof+doing/n.代替oughtto应该情态动词oughtto+动词原形oughtnotto+动词原形Keypoints•AjournalistisinterviewingJaneaboutenvironmentalprotection.•Mymainjobistohelpspreadthemessageaboutprotectingtheenvironment.•Weshouldusebothsidesofpaperandreuseplasticbags.•Weencouragestudentstocollectwastepaperandsoftdrinkcans.•-Thankyou!-It’sapleasure.spread•Mymainjobistohelpspreadthemessageaboutprotectingtheenvironment.•spread的基本意思是“伸开”,指把卷或叠着的东西展开或向四面八方扩大范围,强调有目的地均匀撒开。所涉及的空间范围可大可小;可以计算,也可能无法计算。也可指在某物表面上敷上薄薄一层东西,引申可指某物“变得更流行”。•spread是A-A-A型不规则动词，即过去式和过去分词仍为spreadShespreadherwingsandflewlightlydown.(过去式）Thebreadisspreadwithbutter.（过去分词）both•Weshouldusebothsidesofpaperandreuseplasticbags.•both直接修饰名词时，不加of。如：•Bothchildrenwonprizes.两个孩子都得了奖。•【注意】不能说bothofchildren，但可以说bothofthechildren.，•在人称代词前一定要用bothof•Bothofuslikeskating.=Webothlikeskating.encourage•Weencouragestudentstocollectwastepaperandsoftdrinkcans.•encourage作及物动词，意为“鼓励”，常用结构为encouragesb.todosth.鼓励某人做某事。其被动形式为：beencouragetodosth.被鼓励做某事。如：Themanencouragedhissontostudyhard.​Theyoungshouldbeencouragedtoredmorebooks.•encouragement作名词，意为“鼓励；鼓舞”。如：​Theteacher'swordswereagreatencouragementtohim.Keypoints•First,yououghttoshutofftheelectricitywhenyouleavearoom.•Second,you’dbetterwalkorrideabikeinsteadoftakingabusorataxiifyoutravelashortdistance.•It’ssoeasytobeagreenerperson.•Easiersaidthandone.•Actionsspeaklouderthanwords.•Growfruitandvegetablesyourself.Knowaboutthedifferencesofor,and,butandwhile.(1)Younodyourhead(1)Younodyourheadandanditmeansagreement.itmeansagreement.(2)Hurryup,(2)Hurryup,ororyou’llmissthetrain.you’llmissthetrain.(3)Waterisimportant(3)Waterisimportantbutbutsomepeopledon’tsaveit.somepeopledon’tsaveit.(4)Somepeopleprotectanimals(4)Somepeopleprotectanimalswhilewhileotherskillanimals.otherskillanimals.andand表并列关系，表并列关系，oror表选择关系表选择关系butbut表转折关系表转折关系,while,while表对照关系表对照关系Combinethesentenceswithor,and,butorwhile•1.Noiseisakindofpollution.It’sharmfultoourhearing.Noiseisakindofpollutionandit’sharmfultoourhearing.•2.Workhard.Youwillfailtheexam.Workhard,oryouwillfailtheexam.•3.Noddingtheheadmeansagreement.Shakingtheheadmeansdisagreement.Noddingtheheadmeansagreementwhile/butshakingtheheadmeansdisagreement.•4.Hurryup.Youwillmissthebus.Hurryup,oryouwillmissthebus.•5.Hehasfailedseveraltimes.Henevergivesup.Hehasfailedseveraltimes,buthenevergivesup.放弃Newwords•Noddingtheheadmeansagreement.Shakingtheheadmeansdisagreement.•Doyouthinkbatteriescanbereused?Ifyounod,youmoveyourheaddownwardsandupwardstoshowthatyouareanswering'yes'toaquestion,ortoshowagreement,understanding,orapproval.Batteriesaresmalldevicesthatprovidethepowerforelectricalitemssuchasradiosandchildren'stoys.SummaryWelearn:1.Somewords:nod,agreement2.Somephrases：giveup3.Somesentences:(1)Weshouldreducethewasteweproduce.(2)Recyclingcanprotecttheenvironment,anditcansavemoney,too.Wecan:1.Usethecompoundsentenceswithor,and,butandwhile.2.Talkaboutenvironmentalprotection.•Read1a.•Memorizetheusefulexpressionsandkeysentencesthatwelearntoday.•FinishSectionBinyourworkbook.•PreviewSectionC.Thankyou!