选修8unit3 Bell课件

Learningaims:1.LearnsomethingaboutAlexanderGrahamBellandhisinventionsbyscanningandreading.2.TrytomastertheusageofthefollowingsentencestructuresbypractisingEverytime/Eachtime/Anytime…clause3.Practisespeakingability.Lead-inThetelephonehasbecomepartofourlife.Butdoyouknowwhoinventedthetelephone?AlexanderGrahamBellAlexanderGrahamBellwasaninventorthatlivedbetween1847and1922.HewasborninScotlandandlaterlivedintheU.S.Hespentmuchofhiscareerteachingthedeaf.Guessthemeaningsoftheusefulexpressions1.beatentrack2.setouttodosth.3.aflashofinspiration4.beassociatedwith5.diveinto被踩出来的路；常规；惯例；开始做灵感的闪现和……联系起来HedivedintothehistoryofChina．Hedivedintohispocketsandtookoutonedollar.Theboydivedintotheriverfromthebridge.潜心研究,一心投入迅速把手伸入跳水（头朝下）②findoutthemainidea.ScanningItmainlytalksaboutofAlexanderGrahamBellandhowhe.①Readthepassagequicklyandquietly,findoutWhenBellinventedthetelephone?In1876thelifemadethegreatinventionsReadthetextandthenchoosethebestansweraccordingtothetext.1.WhatdoyouthinkisthekeytoBell’ssuccessasaninventor?A.GoodluckB.IntelligenceC.CuriosityD.Inspiration2.WhendidBellsenthisfirsttelephonemessagetohisassistant?A.oneyearlaterB.fiveyearslaterC.twentydayslaterD.fivedayslater3.Modernbridgesdesignsbenefitalotfrom.A.trianglesB.tetrahedronshapeC.kitesD.flyingmachines4.Hismostfamoussayingsuggestedthathewas.A.ofthinkinghardB.torestC.offewwordsD.tickigtoomuch1.Everytimeyoudo,youwillbecertaintofindsomethingthatyouhaveneverseenbefore.①.Everytimeyoufeellikesmoking,remindyourselfthatyouareanon-smoker.②.Eachtimeyoufail,startalloveragain.③.ThelasttimeImether,shewasreadinganovel.Importantsentencestructuresevery/eachtime意为“每次;每当”,此短语在句子中经常作连词,引导时间状语从句。类似短语还有：thefirst/second….time第一次/第二次……lasttime上次nexttime下次anytime任何时候theinstant/moment/minute/second一……就____Iseehim,theoldmanissittinginthesamechair.A.EverytimeB.EverytimewhenC.AteachtimeD.EachtimethatSpeakingWhatinventionsdoyouthinkareimportantinourdailylife?why?Givethreereasons.DebateWeknowBellinventedthephone.Itmakesusconvenienttocommunicatewitheachother.Todaymoreandmorestudentshaveamobilephone.Butsomestudentsuseitintheschool,evenintheclass.Doyouthinkwhethertheadvantagesoutweighthedisadvantagesorthedisadvantagesoutweightheadvantages?Homework1.Readthetextagain.2.Masterthekeywordsorphrasesthatwelearnedinthetext.