广东省惠东县惠东中学九年级英语上册 Module 12 Unit 3 Language in use教学课件 （新版）外研版.ppt

module12 module12saveourworld unit3languageinuse reusemeans useagain thoughpollutionisheavynow idon tthinkit shopeless languagepractice makeanewwords jointhepartsofwordsinboxawiththewordsinboxb youneedtousesomeofthepartsmorethanonce a able fulim lessre un bcarecollecthopepossibleuseusualwantedwaste collectable usable careful hopeful useful wasteful impossible careless hopeless useless reuse unusual unwanted nowworkingroups playtheguessinggameenglishforfun englishforfun fullofcare 2 canbecollected 3 fullofhope 4 withoutanyhope 5 notpossible careful collectable hopeful hopeless impossible 6 notusual 7 withoutanyuse 8 useagain 9 notwanted 10 makingalotofwaste unusual useless reuse unwanted wasteful sometimesifyouknowthemeaningofthepartsofaword youcanworkoutthemeaningofthewholeword re new able re again able canberenewable canbenewagain learningtolearn 1 合成法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 构词法 airplane classmate grandfather等就是通过合成构词法构成的名词 kind hearted middle aged hard working等为合成形容词 however maybe himself everyone nothing overlook等也都是通过合成法构成的单词 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 2 常见后缀 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 enableableunableabilitydisable 3 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 3 形容词转化为名词shewaswearingablackdress 她穿着一条黑色的裙子 thegirlinblacklooksverybeautiful 那个穿黑衣服的女孩看上去很漂亮 completethesentenceswiththewordsinthebox hopefulimpossiblereuseunhealthywasteful pollutedwateris 2 itis tothrowsomuchfoodaway unhealthy wasteful exercises 3 ifyoulookafterthingswell youmay someofthemlater 4 itis tocleanupthewholeriverinsuchashorttime 5 ifwepayattentiontopollutionnow thefuturewillbe reuse impossible hopeful completethetable use use usefully uselessly hope hopeful hopeless pollute polluted unpolluted water waste wasteful wasted wastefully usual unusual completethesentenceswiththecorrectformofthewordsinactivity3 shewashopefulthathernewjobwouldmakehermoresuccessful thefactory theriver andthefishdied 2 weoftenwalkinthecountryside itisa n activityforus polluted usual 3 donotusesomuchwater itisvery 4 tokeeptheflowersgrowing youneedto themonceaday wasteful water completethesentences alunchboxisaboxthatyoukeepyourlunchin a isacardthatyouwriteononesideofandsendtosomeonebypost 2 a isaroomwhereyouhaveclassesatschool postcard classroom 3 a isabookthathasoneormorestoriesforchildren 4 a isablackboardthatisusedatschoolforwritingonwithchalk storybook blackboard lookatthepicturesandanswerthequestions workinpairs whatkindsofthingscanberecycled 2 howcanthesethingsbereused 3 howdoesthishelptheenvironment 4 haveyoueverrecycledorusedthingsthatcanberecycled how completetheconversationwiththecorrectformoftheexpressionsinthebox begoodforthrowawayturnoffworryabout mike ihearyouareofftothecaribbeanforaholiday luckyyou butaren tyou thepollutionthatsuchlongplanejourneymaycausefortheenvironment ken iknow butwhatcanidoaboutit i vealreadytriedmybesttoprotecttheenvironment worriedabout irecycle idon t thingsifidon twantthemanymore i thelightswhenileavearoom don ttellmeishouldn ttravelbyplaneanymore throwaway turnoff mike no ofcoursenot butwecandomoretoprotecttheenvironment forexample wecanhelpkeeptheaircleanbyplantingtrees trees theenvironment inthisway wecanreducetheharmofpollution aregoodfor ken good soicanenjoymyholiday andwhenicomeback i llplantsometrees mike that stheidea maybewecanalljoininandstartasmallforest listenandcheck thetruesentences 1 itisoktothrowusedthingsaway lookingafterthemtakesalotoftime 2 donotthrowawaythingsmadeofglass plasticandpaper butrecyclethemwhenpossible 3 takeabagwhenyougoshopping listening 4 producingelectricityandusingoilwillnotcausepollution 5 turnofflightswhenyoudonotneedthem 6 rideabikeorwalk anddonotoftendriveyourcar listenagainandcompletethetable glass plasticandpaper recycle reuse takeabag arehardto reducepollution wasteelectricity walkorcycle pollution aroundtheworld earthhour readthepassageandanswerthequestions whenisearthhourheldeachyear earthhourisheldtowardtheendofmarcheachyear whydopeopleswitchoffthelightsduringearthhour theydothistoshowtheirawarenessofclimatechange whenandwherewasthefirstearthhourheld thefirstearthhourwasheldin2007insydney whichcitytakepartintheeventtoday moreandmorecitiesaretakingpartintheevent suchasbeijing london romeandnewyork moduletask workingroups decidewhatkindofpollutionyouwanttotalkabout discussingwhatyoucandoaboutpollution chooseasubjectthatyoucareaboutthemost itcouldbewaterpollution airpollution etc findoutmoreinformationaboutyoursubject lookituponawebsiteorinabook ifyouchooseairpollution let swatchavideoaboutairpollutionfromafactory doyouknowpm2 5 let sknowmoreaboutpm2 5andprotecttheenvironmentfromnow haze discussyoursubject discussion taketurnst