高中英语 Unit1 Great Scientists课件2 新人教必修5.ppt

Unit1Therearesomegreatscientificachievementsthathavechangedtheworld.Canyounamesomeofthem?Whatkindofroledotheyplayinthefieldofscience?Dotheseachievementshaveanythingincommon?Matchtheinventionswiththeirinventorsbelowbeforeyouanswerallthesequestions.AlexanderBellelectricityThomasEdisontheFirsttelephoneLaiteBrotherstheelectricLampMadameCurieblackholesinUniverseFranklinTheoryofGravityStevenHawkingtheFirstPlaneElbertEinsteinRadiumIsaacNewtontheTheoryofRelativityPre-reading:Pairwork:Task1.Whatdoyouknowaboutinfectiousdiseases?While-reading:While-reading:5.DidthemapwhichDr.Snowdrawhelpfindthecauseofthedisease?6.WhatdidDr.Snowthinkwasresponsibleforthedisease?9.WhatconclusiondidDr.Snowtellthepublic?Post-reading:While-reading:Period2Comprehending&learningaboutlanguage.2.Readthepassageagainandanswerthesequestions.1).Cholerawasa19thcenturydisease.Whatdiseasedoyouthinkissimilartocholeratoday?2).JohnSnowbelievedIdea2wasright.Howdidhefinallyproveit?3).DoyouthinkJohnSnowwouldhavesolvedthisproblemwithoutthemap?Giveareason.过去分词作表语一般用来表示感受或状态（系动词+过去分词)Nowonderheisexcited!(predictive)PastParticipleastheAttribute过去分词作定语：1.分词可以用作前置定语此时分词和名词之间有两种语意关系：一种是分词表示主动（但时间上已经过去）；一种是分词表被动。Heisaretiredworker.他是一个退休工人。Thisisanewly-developeddevice.这是一个新开发的工具。2.过去分词作后置定语时其功能当于一个定语从句。1)Buthebecameinspiredwhenhethoughtabouthelpingordinarypeopleexposedtocholera.2)WiththisevidenceJohnSnowwasabletoannouncewithcertaintythatpollutedwatercarriedthedisease过去分词短语有时亦可用作非限制性定语前后常有逗号。Someofthembornandbroughtupinruralvillageshadneverseenatrain.他们当中有一些人生长在农村从未见过火车。Period3ListeningandspeakingListento