高中英语 Unit3 Computers using language课件 新人教版必修2.ppt

Unit3 usinglanguage Computers ImportantVocabularycalculate calculator PC notebook common analytical simple simple minded technology technological revolution universal mathematical artificialintelligence anyway totally network truly race birth IT advantage disadvantage type disagree choice material personally create coach move arise brain mop wanderincommon inone sopinion goby so that dealwith humanrace inaway makeup afterall withthehelpof watchover ListentoaconversationaboutdifferentkindsofinformationtechnologyorIT Payattentiontotheadvantagesanddisadvantagesofeachone Discusstheadvantagesanddisadvantages Trytousethefollowingexpressionsinyourdiscussion Theadvantage disadvantageis Idon tlikethisonebecause Whatisyourreason Inmyopinion Ibelievethat I vedecided Ithinkthisoneisbetterbecause Let smakeourdecision LM WhatareyoudoingDave D I mreadingaboutinformationtechnology LM Youmeanthingslikecomputers Inmyopinionthey resoboringtoreadabout They reonlygoodtouse D Butthey rejustonekindofIT LM Really SowhatelseispartofIT ListeningtextLiMing LMDave D D We vehadITforalongtime Books radiosandTVsarealsokindsofIT LM Oh Ineverthoughtofthatbefore Booksareawonderfulwayforustogetinformation D Yeah Ibelievethattoo Theyarecheapandeasytotakewithyoubutsometimestheinformationisoutofdate LM Iagree Theworldischangingsofast Butinmyopinionlisteningtosportsontheradioisbetterthananythingelse SometimesIalsolistentoEnglishprogrammesontheradio Buttheyspeaksofastandsometimesit sdifficulttounderstandeverything D Yes IalsolistentoEnglishontheradiobutit seasiertofollowonTVbecauseyoucanalsoseewhatisgoingon SometimesitismoreinterestingtowatchsportsonTVthanjustlistentothemontheradio LM Idisagreebecauseyougetsuchalotofinformationonthetechnicalaspectsofagameontheradio Youdon tgetthatonTV ButIstillthinkthatthecomputeristhebestkindofIT Youcanwatchafilmonit writetofriends getinformation andfindoutwhatisgoingonintheworld D Iknow butitisalsothemostexpensiveanditistoobigtocarrywithyoueverywhere AlsotheInternethasnobodytocheckwhetherthaninformationyoufindthereiscorrect Soyouhavetobecareful LM Well IsupposeallkindsofIThavebothdisadvantagesandadvantages Youcanbothlistenandwatch Youcanfindinformation YoucanlistentoEnglish Youcangetinformation Youcannotwritetofriends Itisveryexpensive Youcannotwatchafilm Sometimesitisoutofdate Reading Speaking Reading WhatdoesAndylooklike Andylookslikeahuman Thinkaboutthefollowingquestions 2 Whatcanitdo Itisdesignedtoplayfootballgamesandcanmoveandthinklikeahuman 3 WhatpartdoesAndyplayinthefootballteam He sastriker 1 advantagesn 优点 优势 有利条件Thereareseveraladvantagesincitylife takeadvantageof利用betoyouradvantage对 有利disadvantagen 缺点 劣势 不利条件 Languagepoints 2 type1 n 类型Thisisanewtypeofmachine withlotsofmetersonit 2 v 打字Willyoupleasetypethisletterforme 3 disagree vi 常与with连用 食物 天气等 不适合Muttondisagreeswithme 不同意 意见不同Idisagreewithyouaboutthis 不一致 不符Hisreportdisagreeswiththefact 4 personallyadv 就自己而言 就我个人来说Shedidn tliketheplan butpersonallyIseenothingwrongwithit person n personal adj personally adv 5 ina oneway在某种程度上 从某种意义上说 Inaway hisEnglishhasimproved 与inaway同义的词组有inoneway和insomeways 容易与之混淆的词组是intheway意为 造成阻碍 请比较 Inaway Ilikethisnewtextbookverymuch I mafraidyourbikeisintheway Soyoumadeitafterall Afterall whatdoesitmatter 6 afterall毕竟 到底 终究 Sheshouldhaveofferedtopay she samillionaire afterall 7 withthehelpof在 的帮助下Withthehelpoftheteacher IhavemaderapidprogressinmyEnglishstudy 8 watchover看守 监视 照看Theywerewatchedoverbythreepolicemen watchout for 当心 注意undertheclosewatch在严密的监视下watchforsb sth 观察等待keepawatchon监视 Speaking Insmallgroups discusshowtodesignyourownandroid Thefollowingquestionscanhelpyou 1 Whatwouldyoulikeittolooklike 2 Whataresomeofthethingsyouwouldlikeittodo 3 Doyouwantittobelikeamanorawoman orneither 4 Howmuchwoulditcost Ithinkthat Inmyopinion Ibelievethat What syourreason Ihaddecidedthat A Whatkindofrobothaveyoudecidedtomake B I vedecidedthatweshouldhaveahomeworkandroid Itcoulddoallourworkafterclassandleaveusmoretimetodofootball Sampledialogue B Inmyopinion itshouldhavefourarmstocarrythebooks alargeheadtorememberallthelessonsandaprintertowriteouttheanswers Whatdoyouthink A OK Butwhatdoyouthinkitshouldlooklike A Well thatsoundssensible Perhapsitcouldalsoputalltheexercisesintospeciallymarkedboxesforeachsubjectsowecouldfindthemquickly Whataboutputtingthatinitsstomacharea B Doyouwantittobeamanorawoman Youcanchoose A I vedecideditshouldbeagirl B What syourreason A Girlsaresohard working B Soundsgoodtome Let sdrawitnow Speaking Writing SharingWhatisacomputer Aprogrammablemachine Thetwoprincipalcharacteristicsofacomputerare Itrespondstoaspecificsetofinstructionsinawell definedmanner Itcanexecuteaprerecordedlistofinstructions aprogram Moderncomputersareelectronicanddigital Theactualmachinery wires transistors andcircuits iscalledhardware theinstructionsanddataarecalledsoftware Allgeneral purposecomputersrequirethefollowinghardwarecomponents memory Enablesacomputertostore atleasttemporarily dataandprograms massstoragedevice Allowsacomputertopermanentlyretainlargeamountsofdata Commonmassstoragedevicesincludediskdrivesandtapedrives inputdevice Usuallyakeyboardandmouse theinputdeviceistheconduitthroughwhichdataandinstructionsenteracomputer outputdevice Adisplayscreen printer orotherdevicethatletsyouseewhatthecomputerhasaccomplished centralprocessingunit CPU Theheartofthecomputer thisisthecomponentthatactuallyexecutesinstructions Inadditiontothesecomponents manyothersmakeitpossibleforthebasiccomponentstoworktogetherefficiently Forexample everycomputerrequiresabusthattransmitsdatafromonepartofthecomputertoanother Computerscanbegenerallyclassifiedbysizeandpowerasfollows thoughthereisconsiderableoverlap personalcomputer Asmall single usercomputerbasedonamicroprocessor Inadditiontothemicroprocessor apersonalcomputerhasakeyboardforenteringdata amonitorfordisplayinginformation andastoragedeviceforsavingdata workstation Apowerful single usercomputer Aworkstationislikeapersonalcomputer butithasamorepowerfulmicroprocessorandahigher qualitymonitor minicomputer Amulti usercomputercapableofsupportingfrom10tohundredsofuserssimultaneously mainframe Apowerfulmulti usercomputercapableofsupportingmanyhundredsorthousandsofuserssimultaneously supercomputer Anextremelyfastcomputerthatcanperformhundredsofmillionsofinstructionspersecond 什么是计算机 一个可编制程序的机器 计算机的二种主要特性是 它响应一个具体的指令为一个明确定义的方式 现代计算机是电子和数字化的 现有机器 电线 晶体管和电路 被称为硬件 指令和数据被称为软件 所有通用计算机要求以下硬件元件 物理内存 使计算机 至少临时地 存放数据和节目 一个可编制程序的机器 计算机的二种大容量存储器设备 允许计算机永久地保存很多数据 大容量存储器设备普遍包括驱动器和磁盘驱动器 输入设备 通常是键盘鼠标 输入设备是数据和指令进入计算机的途径 输出设备 显示器 打印机 或其他可以让您看到计算机完成了什么的设备 中央处理单元 CPU 计算机的心脏部分 是实际上执行指令的部件 除了这些部件 使得许多其他的基本部件一起实现高效率地工作成为可能 例如 要求一个巴士传送一个计算机上的一部分数据到另外的巴士上去 电脑根据体积和重量大致分类如下 虽然有有可能的交叉 个人计算机 PC机 一个小的 单用户的电脑微处理器 除微处理器之外 一台个人计算机有一个键盘用来输入数据 一个显示器用来显示信息 还有存贮设备用来保存数据 工作站 一个强大的 单用户计算机 就是一台个人计算机 但它有个更强大的微处理器和更优质的显示器 小型机 多用户电脑 可支持10到上百用户同步 主机 一个强大的多用户电脑 可支持多用户或成百上千的用户同步 大型机 一个非常快的计算机 能每秒响应亿万个指令 Discusstogetherandthendecidewhichkindofcomputeryouwouldliketobuyforyourschool Discussion A Lookatthiscomputer Ithasbeengivenasmallermonitor B That sgoodbecausewecanthenhavemorecomputersintheschool DoesithavetheInternetaswell Sampledialogue A Youcanhaveitfittedbutitisnotincludedintheprice Nowlookatthisone Bothasmallmonitorandaflatscreenhavebeenincluded ItcanbejoinedtotheInternetstraightawayandithasbeengivenalargeharddisccapacity That sgoodofcourse B Doyouthinkweshouldbuylaptopcomputersforourschool Theyaremoreusefulbecausetheycanbemovedfromroomtoroom Theschoolwouldnotneedtoprovideaspecialroomforcomputers Theyarealsosmallerandcanbestoredawaymoreeasily Buttheyhaveprovedtobemuchmoreexpensivethanapersonalcomputer A Yes thatiswhytheprincipaltoldmewecouldnotbuythem Hewouldnotbeabletoaffordenoughfortheschoolsowehadbetterlookatthepersonalcomputers Thisoneisveryfastandusesdiscswhichcanstoremoreinformation Alsoitisneithertoolargenortooexpensive Let sseewhatit smadeof Whyit sperfect It smadefromrecycledmaterialssoourheadmasterwillbeverypleased Hewillhavekilledtwobirdswithonestone Theschoolwillhavenewcomputersandhavesavedtheearth smaterialsaswell B Let schoosethisone OK A Ithinkitisagooddecision Writeareporttoyourschooltogiveyourviewout Writing Welookedatmanydifferentcomputers TheonewehavechosenisthePEPpersonalcomputer Oneofthemainreasonsisthatitissuitableforschools Wefoundthatithasbeenbuiltwithasmallermonitorandaflatscreen Wethinkthesethingswillsavespacesothattheschoolcanfindroomformorecomputers Example Thiscomputeralsohasbeenfittedwithanimproveddisc Thestudentswillbeabletoputmoreinformationononedisc Thiscomputerisalsogoodbecauseithasbeenmadefromrecycledmaterials BothmypartnerandIsuggesttheschoolshouldbuythiscomputer