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高一北师大版模块二Unit4CyberspaceLesson3VirtualRealityWhatisVirtualReality?虚拟现实,就是说本来没有的事物和环境,通过各种电脑技术虚拟出来,让人感觉到就如真实的一样。Theuseofcomputerstomakesituationsfeelandlookreal.虚拟现实技术就是人们利用计算机生成一个逼真的三维虚拟环境，通过自然技能使用传感设备与之相互作用的新技术。它将模拟环境、视景系统和仿真系统合三为一，并利用头盔显示器、图形眼镜、数据服、立体声耳机、数据手套及脚踏板等传感装置,把操作者与计算机生成的三维虚拟环境连结在一起。操作者通过传感器装置与虚拟环境交互作用，可获得视觉、听觉、触觉等多种感知，并按照自己的意愿去改变“不随心”的虚拟环境。如虚拟博物馆是用计算机虚拟技术重现展示古代或现代物品及当时的真实场景。整个场景以三维和交互式探索形式重现。由于虚拟物展品和场景全部存在于计算机中，物体的3D模型可以无限期展示，没有被毁坏、被偷窃的危险。Whatdoyouknowaboutvirtualrealitytechnology?Haveyoueverplayedvirtualrealitycomputergames?Haveyoueverplayedvirtualrealitycomputergames?Haveyoueverplayedvirtualrealitycomputergames?headsetsandspecialglovesandsuitsequippedwithsensorstheusercandirectlyinteractwitha3D(dimension)computerprogrammebymoving‘inside’itThescienceMuseumAmericanCentralUniversity1.Whichwebsitedoyouthinkisreal?2.WouldyouliketovisittheScienceMuseumwebsite?3.Wouldyouliketogotoavirtualuniversity?Beforeyoustart1.WhatwillCathyhavetodothisweekend?A.ShewillgototheScienceMuseum.B.Shewillgocampingwithherparents.C.Sheplanstogotousethelibrarycomputer.D.ShehastofinishtheprojectonthehistoryoftheInternet.Readthetextquicklyandchoosethebestanswertothefollowingquestions.D2.WhatwillTomwanttodothisweekend?A.Hewillgocampingiftheweatherisgood.B.HewillhelpCathywiththeproject.C.Hewillhaveanaround-the-worldtour.D.Hewillvisitsomeworld-famousuniversities.A3.WhichisNOTtheadvantageofthevirtualrealityholiday?A.Peoplecanvisitanyplacetheylike.B.Peopledonotworryabouttheweather.C.Peopleneedalongtimetotravel.D.Peoplewillnotsufferfromlong-timetravel.C4.Howcouldyoustudyinaworld-famousuniversitywithoutgoingoutofyourroom?A.Wehavethehighabilityofself-teaching.B.WecanreceivetheteachingprogramsthroughTV.C.Wecangetinformationfromtheseuniversitiesthroughthecyberspace.D.Wecangototheseuniversitiesonceaweek.CReadthedialogueagainandanswerthesequestions.1.Whycan’tCathygooutthisweekend?Shehastofinishherproject.2.WhereisTomplanningtogo?He’llgocampingiftheweatherisgood.3.DoesCathyhaveaprogrammefor“virtual”holidaysonhercomputer?No,shedoesn’t.4.Doesshereallythinkshewillhavethechancetogoonaworldtour?No,shedoesn’t.5.WhatwouldTomliketodowithvirtualreality?Hewouldliketogotoaworld-famousuniversity.6.WhyisCathysoexcitedaboutthetechnology?Becauseshethoughtshewouldbeabletogoanywheresheliked.Readthetextcarefullyandorganizerightsentencestofinishthechartbelow.VirtualRealityTom’splanCathy’splanVirtualuniversityeducationmeansVirtualrealityholidaysmeantogocampingwithhisparentsiftheweatherisgoodtofinishtheprojectonthehistoryoftheInternetstudyinginfamousuniversitieswithoutgoingoutofourroomsgoingtoanyplacewelikewithouttheproblemsofweather,time,andthemeansoftransportationnowfutureLanguagepoints1.Whatareyouuptothisweekend?这个周末你打算做什么？beupto常用在口语中问对方在做什么，如：Tomlockedhimselfinhisroomforawholemorning.Whatisheupto?Tom把自己关在房间里一个上午，他要干什么？Where’sthatnaughtychildnow?I’msurehe’llbeuptonogoodwhereverheis.那调皮孩子哪儿去了?我看,他到哪儿也做不出好事来。2.DoyouhaveanythingplannedforSaturdayandSunday?你周六、周日有什么安排吗？=DoyouhaveanythingthatyouhaveplannedforSaturdayandSunday?plannedforSaturdayandSunday是过去分词短语作定语。又如：Don’tusewords,expressionsorphrasesknownonlytopeoplewithspecificknowledge.不要运用只有具有特别知识的人才能懂的词汇和表达方式。Thebridgebuiltlastmonthneedsrepairing.上个月建造的那座桥需要修理。3.Canyousuggestanygoodbooksformyproject?你能提供一些和我所做的项目有关的好的参考书吗？suggestvt.1)提议、建议，后可跟名词、代词、动名词和从句（从句中谓语动词用虚拟语气，即should+动词原形，should也可省略。）如：Johnsuggestedgoingforawalk.John建议去散步。Isuggestedtohimthatwe(should)solvetheproblemanotherway.我向他建议我们用另一种方式处理这个问题。2)暗示、表明，后跟的从句中谓语动词用陈述语气。如：Hispalefacesuggestsbadhealth.他面色苍白，说明他身体不好。Therewasnothingtosuggestthatshewantedtokillherself.没有任何迹象显示她想自杀。[拓展]suggestionn.建议，提议，意见makeasuggestionatsb’ssuggestion提建议由于某人的提议Grammar:Conditional1.ZeroConditional零条件句，表示“命令，建议，客观事实，经常性的事”等。如：IfIhavemilkbeforebreakfast,Ifeelill.如果我早餐前喝牛奶，就会不舒服。(经常性，客观事实）Ifweheattheice,itmelts.如果给冰加热，冰会融化。（客观事实）Ifyoudon’tunderstand,asktheteacher.如果你不明白，就问老师。（命令，建议）2.FirstConditional第一条件句，表示“将来有可能实现的事”。如：IfIdon’tfinishmyprojectonthehistoryoftheInternetfornextMonday’slesson,thescienceteacherwillbeangry.(Line3onpage12)Ifit’sgood,Dad,MumandIwillprobablygocamping.(Line7onpage12)Ifyoutellmesometitles,I’lllookfortheminthelibrary.(Line12onpage12)3.SecondConditional第二条件句，又称“虚拟条件句，非真实条件句”。1)虚拟现在：if从句用过去式(be用were)，主句用would(should,could,might)+动词原形IfIwereyou,Iwouldtryitagain.如果我是你，我会再试一次。IfIhadonemilliondollars,Iwouldbuytheplane.如果我有一百万美元，我会买下这架飞机。2)虚拟将来：if从句用wereto(should)+动词原形，或用过去式，主句用would(could)+动词原形Ifhecameheretomorrow,Iwouldtellhimaboutit.如果他明天来的话，我会告诉他这件事。3)虚拟过去：if从句用haddone，主句用would(should,could,might)+havedoneIfhehadworkedhard,hewouldhavepassedtheexamination.如果他努力学的话，他就通过这次考试了。3.SecondConditional第二条件句，又称“虚拟条件句，非真实条件句”。1)虚拟现在：if从句用过去式(be用were)，主句用would(should,could,might)+动词原形IfIwereyou,Iwouldtryitagain.如果我是你，我会再试一次。2)虚拟将来：if从句用wereto(should)+动词原形，或用过去式，主句用would(could)+动词原形。3)虚拟过去：if从句用haddone，主句用would(should,could,might)+havedone。条件状语的倒装：如果条件状语中有were,had,should时,可以倒装成：Were/Should/Had+主+其他WereIyou,Iwouldtryitagain.Hadhebeenthereyesterday,hewouldhaveseenthef