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1、SectionBTheFourthPeriodⅠ.TeachingAimsandDemands1.KnowledgeObjects（1）KeyVocabularysweet,salty,crispy,sour,potato,chip,mistake,bymistake,thin,intheend,chef,sprinkle（2）TargetLanguageDidyouknowpotatochipswereinventedbymistake?No,Ididn’tknowthat.Whoinventedthem?2.AbilityObjects（1）Trai
2、nthestudents’reading,writing,speakingandlisteningskillswiththeTargetlanguage.（2）Trainthestudentstousethenewvocabulary.3.MoralObjectsDoyouenjoyeatingthepotatochips?Haveyoueverthoughtofthehistoryofthechips?Ⅱ.TeachingKeyPoints1.Trainthestudents’reading,writing,speakingandlisteningsk
3、illswiththetargetlanguage.2.Teachthestudentstousethenewvocabularycorrectly.Ⅲ.TeachingDifficultPointsDothelisteningpractice.Ⅳ.TeachingMethods1.Listening2.PairworkⅤ.TeachingAids1.Ataperecorder.2.Somebagsofpotatochips.Ⅵ.TeachingProceduresStepⅠRevision1.Checkthehomeworkbyaskingsomech
4、ildrentoreadtheirconversationstotheclass.2.Asksomequestionsabouttheinventions.Forexample,whatdoyouthinkisthemosthelpfulinvention?3.Dictatethewordsbelow:bulblight,microwaveoven,island.StepⅡ1aThisactivityintroducesnewvocabulary.First,showthenewvocabularyonthescreenbyaprojector.swee
5、tadj.甜的；含糖的saltyadj.咸的；含盐的crispyadj.脆的；易碎的souradj.酸的；酸味的potaton.土豆chipn.（食物等）片mistaken.错误；过去；误解bymistake错误地thinadj.薄的；细的intheend最后；终于chefn.厨师sprinklev.撒（粉末状物）；洒（液体）Pointtoeachwordonthescreenandteachthestudentstoreadonebyone.Doitseveraltimesuntilthechildrencanreadthenewwordsfluent
6、ly.Readtheinstructionstotheclass.Pointoutthefouradjectivesontheleft.Havethemreadthefourwordstogether.Thenasksomedifferentstudentstoreadthem.ThenaskthestudentstotrytotellthemeaningofeachwordinEnglishintheirownwords,orgivesomeexamplesoffoodsthatshowwhateachwordmeans.Forexample,help
7、thestudentsexplainitlikethis:Sweetisusedfordescribingsomethingthattasteslikesugarorhoney.It’stheoppositewordofsour.Afterthat,askthestudentstotellthenamesofthefoodsinthepicturespotatochips,lemon,icecream,tea.Pleasechoosethewordsintheboxtodescribehowthefoodinthepicturestastes.Write
8、themunderthecorrectpictures.Notethatsome
