高中英语第三单元 unit3Welcome to the unit课件 牛津版必修4.ppt

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1、Unit3Tomorrow’sworldWelcometotheunitDiscussthefollowingpictures:MoreinformationaboutrobotsWhydoweneedrobotsWhydoweneedrobots?First,theyarehardworkingandreliable.Theycandodangerousworkorworkthatisveryboringortiringforhumans.Theycanworkaroundtheclockwithoutcom

2、plainingandwithoutneedingrest,foodorvacations.Androbotscangotoplacesthathumanscannot,suchasthesurfaceofMars,deepundertheoceanorinsideanuclearpowerplant.ThePartsofaRobotFirst,arobotmusthaveabodyofsomekind.LikethescarecrowintheWizardofOz,arobotalsoneedsabrain.

3、Forarobottobereallyuseful,itmusthavesomesortofintelligence.Justashumanshavesenseorganssuchaseyesandears,robotsneedsensors.Arobotmightalsoneedavoicetospeaktoitsowner.Manyrobotsneedsometypeofhand,usuallycalledamanipulatororgripper,todotheirjobs.Picture1Therobo

4、tisservingd____forthemaster.Hecandoalotofthingsforh________,forexample,theycanhelppeopledoh_______.theywillmakepeople’slivesmorec________.What’smore,robotscanhelppeopledoboringordangerousworksothatpeoplecanhavetimetor______.innerumanbeingsouseworkonvenientel

5、axDoyouthinkyouwillhavearobotathomeinthefuture?Ifyouhadarobotathome,whatwouldyoulikeittodoforyou?Picture2Wherearethepassengersgoing?DoyoubelievethattravellingtotheMoonwouldbejustliketravellingtoanothercity?Ifyouhaveachance,wouldyouliketoflytotheMoonoranother

6、planet?Picture3___________and_______are____________todiscuss___________betweenotherplanetsandtheEarth.Theyalsotalkaboutthe______issuesintheGalaxy.Humanbeingsthealienshavingameetingbusinessaffairspeace（银河系）Picture4Whatarethepeopleinthispicturedoing?Howoldisth

7、eman?Doyouthinkpeoplecanlivethatlonginthefuture?Whyorwhynot?BecauseofgeneticresearchTHINKITOVERReading1.Bysaying“weareknockingatthedoorofimmorality”MichaelZeymeans____A.TheybelievethatthereisnolimitoflivingB.TheyaresuretofindthetruthaboutlonglivingC.Theyhave

8、gotsomeideasaboutlivingforeverD.Theyareabletomakepeoplelivepastthepresentlifespan2.DonaldLouria’sattitudetowardlonglivingis____.A.peoplecanlivefrom120to180B.Itisstilldoubtfulhowlonghumanscanlive