Unit6When

was

it

invented?(Period4)SectionB(1a-1e)FreetalkLookatthefollowingpictures.Howdotheytaste?sweetsweetsweet/crispyFreetalksoursaltyLookatthefollowingpictures.Howdotheytaste?crispy/saltycrispysalty sourbymistake customeradj.脆的；酥脆的adj.咸的adj.

酸的；有酸味的錯誤地；無意中n.顧客；客戶Lookandsay·What

(kindoffood)canyouseeinthepictures?·Howaboutitstaste?Doyoulikeit?Thewordsintheboxdescribehowfoodcantaste.Writethemunderthecorrectpictures.Somepictureshavemorethanoneword.1asweetcrispysaltysourcrispysaltysoursweetsaltyWritethenameofadifferentfoodaftereachword.1bsweetcrispysaltysourbananabiscuitcheesetomatoLookandpredict·Whataretheytalkingabout?·Wheredoesthestorytakeplace?·Whoinventedpotatochips?·Wheredoesthestorytakeplace?Listenandanswerthequestions.播放教材1c音頻·Whataretheytalkingabout?·Whenwerepotatochipsinvented?Howpotatochipswereinvented.In1853.AcookcalledGeorgeCrum.Inarestaurant.1．Potatochipswereinventedbymistake.2．Theywereinventedin1863.3．Thecustomerthoughtthepotatoeswerenotthinenough.4．Thecustomersaidtheywerenotsaltyenough.5．Georgewantedtomakethecustomerhappy.6．Thecustomerwashappyintheend.播放教材1c音頻ListenandcircleTfortrueorFforfalse.1cTFTFTFTFTFTF播放教材1c音頻Listenagain.Completethesentences.1dTheHistoryofPotatoChipsDoyouknowhowpotatochipswereinvented?Potatochips____________byacookcalledGeorgeCrum.Theywereinventedin_________.GeorgeCrumcutthepotatoesreally,really_________andthencookedthemforalongtimeuntiltheywere__________.Finallyheputlotsofsaltonthemsotheywere___________.wereinvented1853thincrispyreallysaltyMakeaconversationabouttheinventionofpotatochips.Usetheinformationin1cand1d.1eA:Didyouknowpotatochipswereinventedbymistake?B:Wow,Ididn’tknowthat.Whoinventedthem?A:...1．salty

咸的salty形容詞，意為“咸的；含鹽的”，是由名詞salt（鹽）加后綴-y構成的。e.g.Thesoupisalittlesaltyforme.湯對我來說有點咸了。名詞+后綴-y構成的形容詞拓展luck→lucky（幸運的) health→healthy（健康的）wind→windy（有風的；多風的）

rain→rainy（下雨的；多雨的）1．salty

咸的名詞+后綴-y構成的形容詞拓展cloud

→cloudy（多云的；陰天的）sleep

→sleepy（困乏的；瞌睡的）snow

→snowy（下雪的；多雪的）sand

→sandy（含沙的）2．Potatochipswereinventedbymistake.

薯片是無意中被發(fā)明的。bymistake意為“錯誤地；無意中”。e.g.Maybesomebodytookitbymistake.可能有人錯拿了它。拓展在bymistake中，mistake要用單數，且其前無冠詞。crispy、salty、sour、bymistake、customer詞匯·Whenwas...invented?·Wherewas...invented?·Whoinvented...?·Howwas...invented?談論食物的