教案教学基本信息学科English学段初中年级九年级单元Unit6课题Whenwasitinvented?总课时数6课时SectionB(1a-1e)课型听说课授课时间教学目标及教学重点、难点教学目标：Attheendoftheclass,thestudentswillbeableto:1.learnhowpotatochipswereinvented.2.learntolistenforthedetails.3.talkaboutthehistoryofinventions教学重点：1.Keyvocabulary:crispy,salty,sour,customer...bymistake,intheend,put...on....2.Keysentences:a.Potatochipswereinventedbymistake.b.Theywereinventedin1863.c.PotatochipswereinventedbyacookcalledGeorgeCrum.3.Structure:S+was/were+pastparticiple+by…教学难点：Talkabouthowpotatochipswereinventedbyusingthepassivevoiceofthepasttense.教学过程(表格描述)教学环节主要教学活动设置意图Step1Leadin(PPT3-7)1.ShowsomepicturestoSsandask:Whatkindofsnacksdoyouliketoeat?Howdotheytastes?Canyoudescribethem?Whichtastedoyoulikebest?2.MakeSsdiscusswithpartners,thenlookatthecolorfulfoodanddividethemintodifferenttastes.Trytosaysomethingaboutthem.通过图片，引导学生将食物分成不同的口味，学习新单词，导入1a。\nStep2Presentation(PPT8-9)Workon1a,1b.1.Showpicturesofpotatochips,lemon,ice-cream,andsaltedduckeggstoSstolook.TalkwiththeclassaboutthesefoodsandaskSstodescribetheirtaste.Thewordsintheboxdescribehowfoodcantaste.Writethemunderthecorrectpictures.Somepictureshavemorethanoneword.2.CheckanswersinclassandmakeSsreadthewords.3.GuideSsbrainstormdifferentfood.Whatotherfruitissweet/sour?Whatfoodiscrispy/salty?Makethemwritethenamesofdifferentfoodsaftereachword.4.CallsomeSstowritetheirlistsontheblackboard.将1a的食物分成不同的口味。然后在每一种不同的口味后面写出一种不同的食物，熟悉新单词。Step3Listening(PPT10-11)Workon1c,1d.1.MakeSsreadthesentencesin1c.Trytopredictwhatwearegoingtohear.2.PlaythetapeforthefirsttimeforSslistenandtrytogettheroughmeaning.3.PlaythetapeforthesecondtimeandSscircleTorF.4.Playthetapeonceagain.Checktheiranswers.5.MakeSslistenagainandcompletethesentences.6.CheckanswersandmakeSsreadtheshortpassage.听力练习使学生对薯片的历史有详细的了解，并完成两个听力任务。Step4Practice(PPT12-15)Workon1e.1.AskSstoworkinpairstomakeaconversationabouttheinventionofpotatochips.Usetheinformationin1cand1d.A:Didyouknowpotatochipswereinventedbymistake?B:Wow,Ididn’tknowthat.Whoinventedthem?分角色讨论食物制作历史，使学生在愉快的口语训练中巩固句型。拓展阅读帮助学生了解更多的知识。\nA:...2.Workinpairs.Haveadiscussionaboutthefoods.Doyouknowwhattheyare?Howweretheyinvented?3.ShowapassageaboutsandwichforSstoread.Step5Languagepoints(PPT16-21)1.Explaintheusageofbymistake,enough,intheend.2.AskSstoreadthem.解决本节课的难点,学生在语境中感受和体验词汇的用法。Step6Exercises(PPT22-25)Showsomeexercisestopracticethekeywordsandkeysentences.通过词型填空、选词填空和翻译句子等形式练习所学的重点词汇和句型。Step7Homework(PPT26)1.Listento1b.2.Makeconversationswithotherstudentstalkingabouthowpotatochipswereinventedafterclass.3.Writeaconversationtotalkaboutsomethingelse.熟练掌握听力材料。设计开放性的作业，使学生了解更多关于食物的历史。板书设计Unit6Whenwasitinvented?SectionB(1a-1e)sweet:cake,banana,ice-cream...crispy:potatochips,friedchicken...salty:cheese,saltedeggs...sour：vinegar,lemon...教学反思1.本节听说课谈论薯片的发明。2.听力过程中注意被动语态的运用。这是听力的难点部分。