《Language in use》Save our world PPT课件

外研版初中英语九年级Module12SaveourworldDoyouliveagreenlife?Savetheearthandsaveus.Teachingaims:知识目标：Tomastersomewordsandexpressionsaboutsaveourworld:.factory,pollute,recycle,waste,enemy,crop,kill,oil,less,suchas,hopeless…能力目标：1.Tounderstandpassagesaboutpollution.2.tolearntosaywhyweneedtosavetheworldandhowtobegreen.factoryn.制造厂;工厂pollutev.污染recyclev.回收利用,再使用(废品)wasten.废料;废弃物enemyn.敌人;仇人cropn.庄稼;作物killv.杀死;弄死oiln.石油Repeateduse重复使用，多次利用Recycling分类回收，循环再生policyn.政策;方针dividen.分开;分隔plasticn.塑料adj.塑料的clothn.布;布料throwaway扔掉;丢弃tonn.吨tonsof许多,很多rubbern.橡胶rapidadj.快速的;迅速的stepn.步骤;措施reusev.再次使用;重复利用reducev.减少;减低;缩小recyclingn.回收利用Weshouldrecyclerubbishbecauseitcanhelpusprotecttheenvironment.Itisbettertousechinacupsandbowlsbecausetheycanbeusedmanytimes.Pollutionfromfactoriesspreadsovercitiesandvillages.Iftheriversarepolluted,Iftheriversarepolluted,farmerscan’tusethemtowatertheircropsWhatcausespollution?Thecarsontheroadsusesomuchoilandcausepollution1.Pollutionfromfactoriesspreadsovercitiesandvillages.Iftheriversarepolluted,farmerscan’tusethemtowatertheircrops.2.Insomeplaces,pollutionfromfactoriesspreadsovercitiesandvillages3.Thecarsontheroadsusesomuchoilandcausepollution.Whatcausespollution?Whatcanstudentsdo?1.everyclasscollectswastewhichcanberecycledorusedagain.Thentheschoolsellsthewastetohelpstudents.2.Orderfoodthatyoucanfinish.3.Uselesselectricityathome.4.Learnwaystorecyclerubbish.5.Dividerubbishintodifferentgroups.6.Usepapercupsandpaperbags.7.Gotoschoolonfootorbybike.8.Donotthrowawaythingsmadeofglass,plasticandpaper,butrecyclethemwhenpossible.9.Turnofflightswhenyoudonotneedthem.10.Takeabagwhenyougoshoppinginsteadofaskingforaplasticbag.11.Usethingsforaslongaspossible.1.Wethrowtonsofrubbishawayeachyear,andwehavetomakeachange.tonn.吨tonsof许多,很多e.g我们为今晚的聚会买了大量饮料。We’veboughttonsofdrinksforthepartytonight.throwaway扔掉;丢弃e.g.Whenareyougoingtothrowawaythoseoldmagazines?你打算什么时候扔掉那些旧杂志.他已经失去了一个良好的机会。Hehasthrownawayagoodchance2.Repeatthesethreewordsdaily:reduce,reuseandrecycle.repeatv.重说;重新做前缀“re-”,意思是“再,重复”e.g.Irepeatedaftertheteacherwordbyword.我跟着老师一个字一个字地读。reusev.再次使用;重复利用e.g.Sheoftenreusesoldenvelopes.她经常重复使用旧信封。这些瓶子可重复使用达20次。Thebottlescanbereusedupto20times.3.Althoughittakesenergytochangethingsintosomethingelse,itisbetterthanthrowingthingsawayorburningthem.change…into…把……变成……e.g.Youcan’tchangeironintogold.你无法把铁变成金子。4.Wecannothopeforrapidchange,butlet’stakethesesimplestepstoday…takesteps采取措施e.g.我们需要采取一些措施了减少污染。Weneedtotakesomestepstoreducepollution5.It’snousetalkingaboutthingswecan’tdo.It’snousedoingsth.做某事没有用处e.g.It’snousecomplaining.抱怨没有用处。Listen,George,听着,乔治,活在过去是没有用的。it’snouselivinginthepast.1.合成法2.将两个或两个以上独立且语义不同的单词合在一起构成新词的方法叫做合成法。合成法是一种比较灵活的构词方法，可以合成名词、形容词、副词、代词、动词等。例如：afternoon,sportsman,blackboard,sportsperson,newspaper,2.派生法通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词,我们需要掌握常见的前缀和后缀及派生规律。(1)常见前缀前缀含义例词dis-不disagree,dislikeen-使……处于某种状态enable,enrichim-,in-不impossible,impatient,inexpensiveinter-在……之间,相互international,interconnect前缀含义例词mis-错误地mislead,misunderstandnon-不,非non-smoker,non-nativere-再,重复rewrite,retellun-不unable,unhappy,unpopular后缀功能例词-ment构成名词agreement,government-nesscoldness,happiness,illness-thtruth,warmth-tioncompetition,education,information,invitation-tyactivity,safety后缀功能例词-able,-ible构成形容词comfortable,eatable,enjoyable,possible,-alenvironmental,international,national,traditional-fulcareful,helpful,useful-iveactive,expensive-lesscareless,helpless,homeless,useless后缀功能例词-ly构成形容词friendly,lovely,monthly,weekly-ousdangerous,famous-teen构成数词eighteen,fifteen,seventeen-thfifteenth,fifth,fortieth,seventh-tyforty,sixty,twenty-ly构成副词badly,carefully,carelessly,happily,quickly(3)派生规律由一个词根加上相应的词缀可以派生出名词、形容词、副词等，掌握派生规律对扩充词汇有很大帮助。例如：由interest可以派生出：uninterestinginterest—interesting—interestinglyinterested—uninterested由help可以派生出：helpless—helplesslyhelp—helpful—helpfully由able可以派生出：enableableunableabilitydisable3.转化法英语构词法中把一种词性转化为另一种词性而词形不变的方法称作转化法。常见的转化有：(1)动词转化为名词—Let’stalkaboutitmore.咱们再谈谈这件事吧。—Ithinkwe’dbetterfinishthetalknow.我想我们最好现在结束谈话。(2)名词转化为动词Shegavemeacupofwater.她给了我一杯水。Youshouldwatertheflowerstwiceaday.你应该每天给这些花浇两次水。Completethesentenceswiththewordsinthebox.hopefulimpossiblereuseunhealthywasteful1.Pollutedwateris____________.2.2.Itis_________tothrowsomuchfoodaway.unhealthywasteful3.Ifyoulookafterthingswell,youmay________someofthemlater.4.Itis___________tocleanupthewholeriverinsuchashorttime.5.Ifwepayattentiontopollutionnow,thefuturewillbe__________.reuseimpossiblehopefulCompletethesentenceswiththecorrectformofthewordsinActivity3.Shewashopefulthathernewjobwouldmakehermoresuccessful.1.Thefactory___________theriver,andthefishdied.2.2.Weoftenwalkinthecountryside.Itisa(n)_______activityforus.pollutedusual3.Donotusesomuchwater.Itisvery__________.4.Tokeeptheflowersgrowing,youneedto_________themonceaday.wastefulwaterCompletetheconversationwiththecorrectformoftheexpressionsinthebox.begoodforthrowawayturnoffworryaboutMike:IhearyouareofftotheCaribbeanforaholiday!Luckyyou!Butaren’tyou_______________thepollutionthatsuchlongplanejourneyma