河南省南乐县张果屯乡中学九年级英语《Unit9Whenwasitinvented：Period3》教案人教新目标版StepICheckthehomework(2:P73)T:Haveyoufinishedyourhomework?HaveyoufoundoutwhenthesethingsonP73wereinventedandwhotheywereinventedby?Sampleanswers:TheabacuswasinventedinthesixthcenturybyChinesepeople.Theumbrellawasinventedabout4000yearsagoinAssyria,ChinaandEgypt.InItalyin1854,IgnatioPorroinventedthebinoculars.Thebicyclewasinventedinthe1880sinEngland.TheCamerawasinventedbyJosephNicephoreNiepcein1827.Theinventortookthefirstpictureintheworld.Step2Practicethevocabularyandgrammar(1:P73)AskthestudentstofinishtheexerciseofPart1ofSelfcheck.T:Wehavelearntfourwordsaboutdifferentkindsoftastes.Whatarethey?S:Theyaresour,sweet,saltyandcrispy.T:Good.PleaseturntoP73,Part1.Fillintheblankswiththerighttastes.Afterthestudentsfinishit,askoneofthemtoreadthecompletesentencestochecktheanswers.T:We’vealsolearnttwoarticlesaboutpotatochipsandtea.Nextcompletethefollowingtwoclozeteststohaveareviewofthem.Don’trefertoyourtextbooks.OK?Givethestudents10minutestofinishthetwotests.Clozetest1:Didyouknowthatpotatochipswereinvented____________?Itsaysthattheywereinvented_____achefcalledGeorgeCrumin1853.OnedayacustomerintherestaurantwhereGeorgeworkedsentbackhisplateoffriedpotatoesbecausehesaidtheywerecuttoothick.Georgewasinabadmood,sohecutthepotatoesreally,reallythin,andhecookedthemforalongtimeuntiltheywere_____.Andhe_______lotsofsaltonthemsotheywerereally______.Hethoughtthecustomerwouldhatethem.Butthecustomerlovedthemandaskedformore.Hetoldothercustomersaboutthem,andsooneveryonewasorderingthinly-sliced,crispy,saltypotatochips.___________________,theybecamepopular.Clozetest2:Didyouknowthattea,themostpopulardrinkintheworldwasinvented__________?Althoughteawasn’tbroughttotheWesternworlduntil1610,thisbeveragewasdiscoveredoverthree________yearsbeforethat.____________anancientChineselegend,theemperorShenNong______teawhenhewasboilingdrinkingwater______anopenfire.Someleavesfromabush____________thewaterand_______thereforsometime.Theemperor______thattheleavesinthewaterproducedapleasantsmell.Laterhedecidedtotastethehotmixture.Itwasquitedelicious.And___________________,oneoftheworld’sfavoritedrinkswasinvented.Sampleanswers:Clozetest1:bymistake,by,crispy,sprinkled,salty,IntheendClozetest2:byaccident,thousand,Accordingto,discovered,over,nearby,fellinto,remained,noticed,inthiswayT:Welldone.Whatgrammardidwelearninthisunit?S:Thepassivevoice.T:Next,let’sdosomepracticeongrammar.Changethesentencesintothepassivevoice.Payattentiontothetenseandmakethesubjectagreewiththeverb.Showthefollowingsentencesonthescreen.1.Whoinventedthebasketball?2.Allenjoythismuch-lovedandactivesport.3.Morethan100millionpeopleplaybasketball.4.TheteacheraskedJamesNaismithtoinventanewgame.5.DrNaismithdividedthemenintotwoteams.6.DrNaismithcreatedagame.Sampleanswers:1.Whowasthebasketballinventedby?2.Thismuch-lovedandactivesportisenjoyedbyall.3.Basketballisplayedbymorethan100millionpeople.4.JamesNaismithwasaskedtoinventanewgamebytheteacher.5.ThemenwasdividedintotwoteamsbyDrNaismith.6.AgamewascreatedbyDrNaismith.Step3TalkaboutinventorsAskthestudentstotalkaboutinventorsandleadthemtogetapositiveattitudetowardinventingandinventors.T:Canyouthinkofsomegreatinventors?S:ThomasEdison,BenjaminFranklin,AlexanderBell.T:Whycouldtheybecomeinventors?Discussingroups.Sampleanswers:S1:Theywerecl...
