2019-2020年高中英语Unit3Inventorsandinventions2学案新人教版选修8.doc

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1、2019-2020年高中英语《Unit3Inventorsandinventions》2学案新人教版选修8学案二Gettoknowsomenecessarybackgroundknowledge:IntroductiontotheUnit:Inventingisascientificactivitybecauseitusesthesameproceduresasscientificexperiment.Itisalsoacreativeactivity.Sotobeagoodinventor,youneedtobeimaginativeaswellasdisciplined

2、inyourapproach.Oneoftheimportantaimsofthisunitistoidentifyandsetoutthestepsthatshouldbefollowedbyanyinventor.Anotheristomakeclearthedifferencebetweenadiscoveryandaninvention.Thethirdistointroducethereaderstotheroleofthepatentofficeindecidingwhatisaninventionandwhatisnot.Inventinghasbeenapa

3、rtofhumanlifeaslongashumanshavebeenontheearth.Ifyougointoamuseum,youwillseethestoneaxes,potsandfishinghooks,whichweretheinventionsofourancestors.Eachistheresultofsuccessfulexperimentsbyearlymanintoproblemssuchashowtocutdowntrees,cookandstorefoodandwaterorcatchfish.Manyobjectsthatwehavearou

4、ndustodayaresimilarmoderninventions.Themobilephonesolvestheproblemofhowtocontactsomeonewhileyouareonthemove.Thetelevisionsolvestheproblemofhowtospreadnewsandentertainpeopleathome.Thewashingmachinehelpsustokeepourclothescleanandlightenourwork.Soinventorsandinventionsarenotnewandeachoneanswe

5、rsaparticularneedorsolvesaproblem.Workouttherulesthatwillhelpyoudecidewhatadiscoveryisandwhataninventionis.Workouttheconnectionbetweenadiscoveryandaninvention:discoveriesoftenleadtoinventions.Readthefollowing:DiscoveriesInventions1.electricity1.Systemsofdeliveringelectricallightandheatingt

6、ohomesandoffices.2.Householdmachinesforwashing,ironing,keepingfoodcold,etc.3.Computers,telephones,television,etc.2.themovementofair1.Airplanejetengines2.Airballoons,etc.3.thecirculationofthebloodMachinestohelppeoplewithseriousdisease(likekidneyfailure4.X-rays1.Bodyscannerstoseewhetheryouar

7、eill.2.Machinestotreatillnesses(likecancer)Adiscoveryis_____________________________________________________.Aninventionis___________________________________________________.Inventionisgenerallythoughttomake,designorproducesomethingnewforthefirsttime.Infactinv