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1、Module6SaveourworldUnit3languageinuse课型：语法课【学习目标】1、前缀、后缀构词法：2、能够读懂环境保护的文章并能写出有关污染问题你能采取哪些措施。【课前准备】1.小组朗读并检查模块词汇。2.小组内复述unit2课文。【学习过程】1、新知导入。⑴介绍：MatchtheunderlinedwordswiththemeaningreusableuncomfortableunhealthyuncleanimpossibleuntruePollutedwaterisnothea
2、lthyIt’ssomethingwecanuseagain.Thewaterintheriverwasverydirty.It’snottruethatwedon’tlistentothestudents.Itwasnotpossibletocleanupthewholeriver.Thepeopleonthemountaintopwerenotcomfortable⑵归纳：请仔细观察以上例句，回答下列问题：哪些前缀和后缀表示“否定”意思？哪个后缀表示“有能力的”____________________
3、____________________________哪个后缀表示“充满……的”哪个前缀表示“再”_______________________________________________________________________________⑶交流：分组讨论你所发现的规律。前缀、后缀构词法：1.表示否定意义的前缀和后缀: dis- dishonest, dislike in-incorrectim-, impossible, un- unable, unusual-lesscareles
4、s,hopeless2.带有“有能力，适合于”的含义:后缀 -able, movable, comfortable3.表示“充满……的”:后缀 -ful, beautiful, wonderful, helpful4. 表示“再”的含义:前缀re-reuserewriteretell2、专项练习：（1）Choosethenumberanddoexercisesusing“-able,-ful,-less,im-re-un-”1）Ifpeoplelikeyoualot,youare________2）I
5、fyouarealwaysreadytohelppeople,youare______3）Ifyouwritesomethinganditisn’tverygood,youshould______it4）Ifyouaren’tcertainaboutsomething,youare________.5）Ifsomethingisn’tperfect,itis______6）Ifsomethingiswithoutanyuse,itis________.（2）请在小组内或结对，进行说的训练，并结对互评或小组
6、互评，纠正出现的错误。1).Findmorewordswhicharecomposedofprefixandsuffix,suchas"-able,-ful,-less,im-,re-,un-”asmanyaspossible.2).Makesentenceswiththewordsyoufind.（competition:sayasmanysentencesasyoucan3、综合运用a.Completethesentenceswiththecorrectformofthewordsintheboxen
7、joyenvironmentcarewastereusehope1.Cyclingtoschoolisboth_________andenvironmentallyfriendly.2.Youreallyneedtobe________withthingsbadtotheenvironment.3.Everybodycandoalittlebittohelpwith__________problems4.Itis________tothrowawaythe________shoppingbags5.Sci
8、entistsare________aboutnewwaystosaveenergyb.Completetheconversationwiththecorrectformofthephrasesinthebox:Begoodat,hearof,turnoff,worryabout,alotofpollution,plantsometrees,joinin,protecttheenvironment,lookafter,thro
