Module 12 Save our world Unit 3 language in use.ppt

Module12Saveourworld Unit3Languageinuse 在一个单词前或后加上一个词缀 就可以构成一个新词 根据词缀的位置 分为前缀和后缀两种 掌握一些常见的词缀 对单词的记忆和理解有很大的帮助 比如 我们学会care 就能掌握careful careless carefully carelessly 下面我们来学习几个常见的前 后缀 Grammar 1 表示否定意义 无 不 的前缀 impolite impossible un in dis im il unfair unhappy inactive inhuman indirect disagree disappear illegal 前缀 2 表示程度 大小的前缀 super over mini under superstar supermarket superman superpower overhead overeat overuse minibus miniskirt minicar underground underdevelop 前缀 3 表示 再 的前缀 re rewrite reuse recycle 前缀 4 表示 向 背 的前缀 pro anti pro Chinese pro American anti war 反战 anti pollution 5 表示 整个 完全 意思的前缀 al 表示 完整 完全 alone almost over 表示 完全 全 overall overflow 充满 前缀 able表示 可能 易于 适合于 构成形容词 如 renewable eatable 可吃的 lovable 可爱的 comfortable movable 可移动的 后缀 常见的后缀 2 ful表示 充满 的 具有 性质的 构成形容词 如 helpful hopeful powerful useful careful beautiful 后缀 3 less与 ful相反 表示 少的 不足的 构成形容词 如 helpless hopeless powerless useless careless 1 动词变名词 ation ment al ee er or satisfaction education realization development movement arrival refusal trainee employee teacher worker visitor sailor 让我们来看一些不改变词根的基本意义 而是改变了词性的后缀 2 形容词变名词 ness ity ism happiness meanness carelessness ability possibility Marxism criticism 3 名词 形容词变动词 ify ize en beautify simplify realize quicken widen sharpen 4 名词变形容词 y ish some ous ful windy rainy sandy foolish feverish handsome troublesome dangerous humorous helpful careful peaceful Completethetable electricity electric energy energetic environmental hopeless hope hope pollution polluted serious seriously nation nationally unusual environmentally waste worriedly wastefully wasteful worried worry Completethesentenceswiththecorrectformofthewords 1Theyareworkingvery toreducewaste 2Thesituationis Wecan tdoanythingtomakeitbetter 3Thefactory theriver andthefishdied 4Wedon toftenwalkinthecountry It sa n activityforus 5Don t Everythingwillbeallright 6Don tusesomuchwater It svery energetically hopeless polluted unusual worry wasteful Moduletask Discusswhatyoucandoaboutpollution Workingroups Decidewhattypeofpollutionyouwanttotalkabout Choosesomethingthatisveryimportanttoyou Itcouldbewaterpollution airpollution waste cuttingdownforests etc Findoutabitmoreinformationaboutyoursubject Lookituponthewebsiteorinbooks Discussyourtopic Takeitinturnssayingwhatyouthinkabouttheproblemandwhatcanbedone Listencarefullytowhattheotherssay Ifyouagreewithwhatthey vesaid say Iagree Tha