Unit 4 Topic 3 Section C.ppt

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1、Unit4AmazingScienceTopic3Chinaisthethirdnationthatsentapersonintospace.SectionCWhatarethecomputersusedfor?1a1.Tickthefieldsweusethecomputerin.educationbusinessindustrycommunicationdailylifemedicalcareentertainmentsportsDoctorscanfinddiseaseseasily

2、withthehelpofcomputers.Canyougiveanexampleoftheuseofthecomputerinoneofthefieldsabove?Inspace,computershavebeenusedtocontrolthespeedanddirectionofaspaceship.Whatisthepassageabout?TheImportanceofComputersUnderlinethetopicsentenceofeachparagraph.1.Sinc

3、ecomputerswereinventedintheUSAinthe1950s,theyhavebecomeveryimportantinmanyareasofworkandleisure.2.SincetheInternetcameintobeing,people’slivesathomehavebeenchanged,too.3.Computershaveimprovedourlives,buttheyhavebroughtproblems,too.PlaceTheusageofcompu

4、tersInspaceInhospitalsInfactoriesInbusinesscontrolthespeedanddirectionfinddiseaseseasilyandsolveotherproblemsdodangerousworkusedtoplaceandcancelordersParagraph1Thereisnodoubtthatwewillbesuccessful.Idon'tdoubtthattheywillbeabletosolvetheproblems.doubt

5、n.&v.怀疑，疑惑(2)doubt(vt.)+从句(3)doubt(vi.)+about/ofDoubtisthekeytoknowledge.Thereisnoreasontodoubtofhishonesty.Idoubtwhether/ifhe'llchangehismind.(1)doubt(n.)Paragraph11.Thereisnodoubtthatcomputersareveryusefulintechnologyandbusiness.毫无疑问电脑在技术和贸易业都非常有用。

6、2.Forexample,tinycomputerswhichareinsidepatients’bodiescankeeptheirheartsbeatingnormally.例如，病人体内植入微电脑能帮助病人的心脏正常搏动。64英寸超大型（Huge）32英寸大型（Large）16英寸中型（Medium）8英寸小型（Small）4英寸超小型（Tiny）tinyverysmallinsizeadj.极小的，微小的atinygirlParagraph1prep.在……内adv.在里面Languag

7、epoints3.Thewholeworldisconnected.网络连接了全世界。connectv.连接connectionn.关系，联系1.connectAwithB使A与B连接2.connectsth.(tosth.)使电、气、水等接通3.connectsb./sth.(withsb./sth.)与……有联系，把……联系起来Paragraph2comeintobeingmoreandmorewatchmoviesthankstodobusinessinsteadofchatonlinem

8、aketheworldsmaller做买卖形成，产生越来越多看电影代替网上聊天使世界更小多亏，由于Paragraph21.Forinstance,ifweworkoncomputerstoolong,wemaygetheadachesorsoreeyes.比如：如果我们使用的电脑工作的时间太长，我们就会头昏眼花。forinstance=forexample用来举例说明某一论点或情况，一般只举同类人或物中的“一个”为例。suchas用来列举事物时，一般列举同类人或事物中的几个例子。E.g.（1）M