Section B1(9单元) When was it invented

Unit9Whenwasitinvented?,SectionBPeriodOne,crispysaltysourbymistakechefsprinkle,adj.脆的；易碎的adj.咸的；含盐的adj.酸的；酸味的错误地n.厨师v.撒（粉末状物）；洒（液体）,crispyandsalty,Describehowfoodtastes.,potatochips,sour,lemon,sweet,Icecream,sweet,tea,sour,sweet,sweet,crispy,salty,1a,sweetcrispysaltysour,Fillintheblanks.,1b,banana,apple,soda,cake,honey,salad,lettuce,frenchfries,frenchfries,olives,pepperoni,pickle,grapefruit,Writethenameofadifferentfoodaftereachword.,2a,listenandcircle“T”or“F”.,1.Thepotatochipswereinventedbymistake.2.Theywereinventedin1863.3.Thecustomerthoughtthepotatoeswerentthinenough.4.Thecustomersaidtheywerentsaltyenough.5.Georgewantedtomakethecustomerhappy.6.Thecustomerwashappyintheend.,T,F,T,T,F,F,_thatpotatochipswereinventedbymistake?Chips_byachefcalledGeorgeCrum.Theywereinventedin_.GeorgeCrumcookedthemforalongtimeuntilthey_Andhesprinkledlotsofsaltonthemsotheywere_.,Thehistoryofchips,Didyouknow,wereinvented,1853,werecrispy,reallysalty,2b,listenagain.Completethesentences.,Roleplaytheconversationabouttheinventionofthepotatochip.Usetheinformationfromtheactivitiesabove.,2c,Pairwork,Languagepoints,Thepotatochipswereinventedbymistake.【经典习题】完成句子：很抱歉我错拿了你的书包。ImsorrythatItookyourschoolbag_.【要点点拨】bymistake意为“错误地”，常置于句末。,bymistake,【拓展延伸】mistake作名词时，还可构成短语：makeamistake犯错误。mistake还可用作动词，常用于mistakefor表示“把误认为”。如：ImistookKateforhersisterwhenImetheryesterday.,根据句意和首字母提示补全单词。Therewerefourfamousinventionsina_China.2.Thesecarswerep_bythesamecompany.3.Dontt_stonesatthebirds.4.Fewpearsr_onthetreesafterthehe