九年级英语上册Module12SaveourworldUnit3Languageinuse课件（新版）外研版.ppt

Module12Saveourworld Unit3Languageinuse LanguagepracticeReusemeans useagain Thoughpollutionisheavynow Idon tthinkit shopeless Makenewwords JointhepartsofwordsinBoxAwiththewordsinBoxB Youneedtousesomeofthepartsmorethanonce ABcarecollecthopepossibleuseusualwantedwaste able fulim lessre un LearningtolearnSometimesifyouknowthemeaningofthepartsofaword youcanworkoutthemeaningofthewholeword re new able re again able canbe renewable canbenewagain 构词法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 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 常见前缀 workout解决 计算 产生结果 设计出 这里的go为系动词 英语系动词的功能主要是把表语和主语联系在一起 说明主语的属性 特征或状态 系动词不能在句中独立作谓语 必须和后面的表语一起构成句子的谓语 某些含有变化意义的动态系动词如get become grow turn等的进行时态可与形容词的比较级连用 表示渐进过程 其意思是 越来越 eg Heisgrowingtallerandtaller 他长得越来越高了 Ourlifeisgettingbetterandbetter 我们的生活越来越好了 易混系动词的区别get become go turn grow 变得 carefor与careabout的意义 用法区别 Completethesentenceswiththewordsinthebox hopefulimpossiblereuseunhealthywasteful1 Pollutedwateris 2 Itis tothrowsomuchfoodaway 3 Ifyoulookafterthingswell youmay someofthemlater 4 Itis tocleanupthewholeriverinsuchashorttime 5 Ifwepayattentiontopollutionnow thefuturewillbe Completethetable WorkinpairsLookatthepicturesandanswerthequestions 1 Whatkindsofthingscanberecycled 2 Howcanthesethingsbereused 3 Howdoesthishelptheenvironment 4 Haveyoueverrecycledorusedthingsthatcanberecycled How Completetheconversationwiththecorrectformoftheexpressionsinthebox begoodforthrowawayturnoffworryaboutMike IhearyouareofftotheCaribbeanforaholiday Luckyyou Butaren tyou 1 thepollutionthatsuchlongplanejourneymaycausefortheenvironment Ken Iknow butwhatcanIdoaboutit I vealreadytriedmybesttoprotecttheenvironment Irecycle Idon t 2 thingsifIdon twantthemanymore I 3 thelightswhenIhavealeavearoom Don ttellmeIshouldn ttravelbyplaneanymore Mike No ofcoursenot Butwecandomoretoprotecttheenvironment Forexample wecanhelpkeeptheaircleanbyplantingtrees Trees 4 theenvironment Inthisway wecanreducetheharmofpollution Ken Good Icanenjoymyholiday andwhenIcomeback I llplantsometrees Mike That stheidea Maybewecanalljoininandstartasmallforest ModuletaskDiscussingwhatyoucandoaboutpollutionWorkingroups Decidewhatkindofpollutionyouwanttotalkabout Chooseasubjectthatyoucareaboutthemost Itcouldbewaterpollution airpollution etc Findoutmoreinformationa