《Unit9Whenwasitinvented》（第4课时）教案课题：Unit9Whenwasitinvented?<4>讲课教师：学科：English课时：4总课时数：57教学目标知识与技能Tolearntousepassivevoice(questionsandstatements)过程与方法Totrainstudents’reading,listeningandspeakingskills.情感态度与价值观Trainthestudentstousetheirheadsandmakesomeinventionsinlife.教材分析教学重点Thenewwordsandphrasestoexpressdifferetkindsoffood.教学难点Passivevoice(questionsandstatements)教学过程教师活动学生活动备注（教学目的、时间分配等）Lead-inGreetingsandDutyReaport.Talkaboutyourfavoriteinventions.Whatcanwedowiththecomputer?Yes,ofcourse.Wecanrelaxourselvesbyplayingcomputergames.Butplayingcomputergamestoomuchwillwasteourtime,andHaveadutyreport.Listenaskandanswer.S1：Wecanlistentomusicanddosome5’1’it’salsobadforoueeyes.Justnow,wetalkedaboutsomemoderninventions.Doyouknowthehistoryofpotatochipsandtea?Thisclass,let’slearnsomethingaboutthem----Unit9SectionB.InteractionandConsoladation1.Newwords1)crispy2)chef3)sweet--sour--bitter--hot--saltytaste~4)sprinkle5)bymistakeHaveyouevereatenpotatochips?Whocantellmethetastesofthem?1a&1b2.Listening2a&2b2aWe’vetalkedaboutthetastesofpotatochips.But,whoweretheyinventedby,andwhenwerepotatochipsinvented,doyouknow?Sorry,youdon’t.Sowhydon’twelistentothetapeandtrytogettheanswer?2b1)Predictetheanswerstothelisteningtest.reading.S2：Wecanplaycomputergames..2aListenandcircle,andthenlistenagainandcorrectthemistakes.Practiceusingbymistake.28’2)Trainthemtolistenandwritetheimportantpartofanswers.3)Checktheanswers.4)Readthepassage.usefulexpressionsbeinventedbymistake,onthebag,backin1853,oneday,send…back,aplateoffriedpotatoes,becuttoothick,inabadmood,cut…reallythin,cook…alongtime,sprinkle…on…,thinly-sliced,crispy,saltypotatochips,acoolstory2cPairworkDoyouthinkthehistoryofpotatochipsissointeresting?Nextlet’sroleplaytheconversationsaboutit.Listenandwrite.Practicechef,sprinkleWorkinpair.教师活动学生活动备注（教学目的、时间分配等）Doyouknowanyinterestinghistoryofinventions?Let’senjoyittogether.SummaryWhatdidwelearn?Exercises1.Carswereinventedin1885.(对划线部分提问)_______________________2.JulieThompsoninventedelectricslippers.(改写句子)Electricslippers___________3.ThelightwasinventedbyThomasEdison.(对划线部分提问)________________________HomeworkSumupandwritetheusefulexpressions,preparethenext.Dotheexercises.5’5’1’板书Unit9Whenwasitinvented?<4>beinventedbymistake,inabadmoodonthebagcut…reallythinbackin1853cook…alongtimesend…backsprinkle…on…aplateoffriedpotatoes,thinly-sliced,crispy,saltypotatochips,acoolstorybecuttoothick教学后记：
