UNIT6Whenwasitinvented?SectionB(1a—1e)第3課時設計說明本課時學習有關薯片的發明的相關對話。教學時通過一系列圖片討論美食的味道來導入新課，然后讓學生討論其他的有這種味道的食品，過渡到1a與1b的活動中。通過不同的任務對聽力材料加以處理，讓學生多維度地利用聽力材料。教學目標通過本課時的學習，讓學生達成以下目標：1.知識目標：(1)單詞：crispy,salty,sour,customer(2)短語：bymistake,intheend(3)句子：①Potatochipswereinventedbymistake.②Thecustomerthoughtthepotatoeswerenotthinenough.③Finallyheputlotsofsaltonthemsotheyweresaltyenough.2.能力目標：(1)通過聽說訓練，了解薯條的發明歷史；(2)學會使用被動語態談論薯條的發明歷史。3.情感目標：通過學習,了解中國的傳統文化，培養民族自豪感。重點難點1.重點：本課時的重點單詞、短語和句型。2.難點：運用被動語態的相關句型談論某種美食的發明。教學準備PPT課件，1c,1d的錄音教學過程Step1Lead-inShowthestudentssomepicturesandtalkaboutthefourbasickindsoftastes.Howdotheytaste?lemon:sourice-cream:sweetcoffee:bittersalt:saltyGetthestudentstonamesomefoodthatareassociatedwiththefourtastes.Step2Workon1a—1bThewordsintheboxdescribehowfoodcantaste.Writethemunderthecorrectpictures.Somepictureshavemorethanoneword.sweetcrispysaltysoursweetcrispysaltysour____________________________________________________________________________________Answers:crispysoursweetsaltysaltyfreshcolddeliciousWritethenameofadifferentfoodaftereachword.Step3Listening1.Lookatthepictureandguess:Whataretheytalkingabout?Answer:Theyaretalkingaboutpotatochips.2.ListenandcircleTfortrueorForfalse.(1)Potatochipswereinventedbymistake. T F(2)Theywereinventedin1863. T F(3)Thecustomerthoughtthepotatoeswerenotthinenough. T F(4)Thecustomersaidtheywerenotsaltyenough. T F(5)Georgewantedtomakethecustomerhappy. T F(6)Thecustomerwashappyintheend. T FChecktheanswersonebyone.Answers:(1)T(2)F(3)T(4)F(5)F(6)T3.Listenagainandanswerthequestions.(1)Whoinventedpotatochips?(2)Whenweretheyinvented?(3)Whatdidthecustomerorderattherestaurant?(4)WhatdidthecustomerthinkofthepotatochipsGeorgecookedatfirst?(5)HowdidGeorgecookthepotatoesthen?Checktheanswersonebyone.Answers:(1)TheywereinventedbyacookcalledGeorgeCrum.(2)In1853.(3)Heorderedaplateoffriedpotatoes.(4)Hethoughttheywerecuttoothick.(5)Hecutthepotatoesreally,reallythinandcookedthemforalongtimeuntiltheywerecrispy.Andheputlotsofsaltonthemsotheywerereallysalty.4.Listenagain.Completethesentences.TheHistoryofPotatoChipsDoyouknowhowpotatochipswereinvented?Potatochips______byacookcalledGeorgeCrum.Theywereinventedin______.GeorgeCrumcutthepotatoesreally,really______andthencookedthemforalongtimeuntiltheywere______.Finallyheputlotsofsaltonthemsotheywere______________.Checktheanswersonebyone.Answers:wereinvented;1853;thin;crispy;reallysalty5.Listentothetapeagainandpayattentiontopassivevoice(pasttense).Step4Role-play.1.Readthedialoguealoudforafewminutesbyyourself.2.Role-playingroups.3.Role-playinfrontoftheclass.Step5Homework1.Previewthenewwordsandexpressions.2.PreviewthepassageDoYouKnowWhenBasketballWasInvented?onpage46.當堂達標根據句意及首字母提示填空。1.Lauraaddedtoomuchsalttothesoup.Nowittastestoos.2.Thepotatochipsarethinandc.Pleasehaveatry.

3.OrangestastesweetandabitsandtheyarefullofvitaminC.答案：1.salty2.crispy3.sour4.customers板書設計UNIT6Whenwasitinvented?SectionB(1a—1e)單詞：crispysaltysourcustomer短語：bymi