最新北师大必修一unit3-lesson4-christmas课件PPT.ppt 35页

'北师大必修一unit3-lesson4-christmas ☆DoyourememberthreeChinesetraditionalfestivalsthatwehavelearntinLesson1inthisUnit?TheDragonBoatFestival TheLanternFestivalsweetdumplings Lesson4Christmas☆Doyouknowwhat’stheorigin(起源)ofChristmas?◆ThatdaywasthedaytocommemoratethebirthofJesusChrist.(纪念耶稣诞生的日子)☆WhenyoutalkaboutChristmas,whatcanyouimagine?balloons,Christmascarols,Christmaspudding,Christmastree,snow,snowmen,Christmasstockings,presents,FatherChristmas,snowballfights,turkey,ChristmascakeKeywords: balloonspresentssnowmen ChristmastreeChristmasstockings ChristmascarolsFatherChristmas ChristmaspuddingChristmascake roastedturkeyChristmashatChristmascandies Paragraph1people’sactivities(活动)afterlunchParagraph2writingalettertoFatherChristmasParagraph3atmosphere(气氛)duringChristmasParagraph4people’sactivitiesonChristmasEveParagraph5people’sactivitiesonChristmasmorningandhavinglunch☆lookthroughthetextandchoosethemainideaofeachparagraph. Readingstrategies:Whenyouanswerthemultiple-choicequestion，◆Readthequestionandanswers.◆Trytoguessthecorrectanswer.◆Findtheplaceinthetextwhereyouthink　　　　　　　　theansweris.◆Readthetextandcheckyouranswer. ☆Answerthemultiple-choicequestions.BeforeChristmas:1.WhendidChristmasalwaysbegin?inthemiddleofthewarmmonthofSeptemberinthemiddleofthehotmonthofJuneinthemiddleofthecoldandwindymonthofNovember2.Whatdidpeopledoinfrontofthefire?wrotealettertoFatherChristmaslookedatthefirethoughtaboutsomething(C)(A) 3.Attheendofeachyear,whatdidpeoplealwaysdo?hadapartywenttotheparkopenedthenewyearcalendar4.Whatdoyouthinkpeopledoinacarolservice?singsongsgivepresentswatchaplay5.Iftherewassnoweverywhere,whatcouldpeopledo?eatthesnowmakesnowmenandhaveexcitingsnowballfightsdonothing(C)(A)(B) OnChristmasEve:6.OnChristmasEve,whatdidthewholefamilydo?didn’tgotobedwatchedTVdecoratedthehouseandputuptheChristmastree7.Wheredidthepeopleputtheirstockings?onthedeskunderthebedattheendofthebed8.WhathappenedonChristmasEve?thewriterstayedawakeallnightsomeoneputpresentsinthestockingsthewritersawFatherChristmas(C)(C)(B) OnChristmas:9.Whatwerethestockingsfullof?presentsB.snakesC.nothing10.Whoputpresentsinthechildren’sstockings?FatherChristmasB.theirparentsC.nobody11.Atlunchtime,whatdidpeopleeat?turkeysandChristmaspuddingsricenothing12.WhatsongsdidpeopleusuallysingduringChristmas?popularsongsB.classicalsongsC.carols13.Afterlunch:TheadultswatchedtheQueen’sspeech.Thechildrenmadeasnowman.Everyonehadmoretoeat.(A)(B)(C)(A)(A) ☆Inwhatorderdidthechildrendothesethings?Example:1da)openthenewyearcalendarb)puttheirstockingsattheendofthebedc)singChristmascarolsd)writealettertoFatherChristmase)putuptheChristmastreef)gotochurchg)haveChristmascake ReadtolearnwritealettertotheFatherChristmasopenthenewyearcalendarputuptheChristmastreegotochurchsingChristmascarolsputtheirstockingsattheendofthebedhaveChristmascakesCompleteexercise3inthislessonandlookatthediagrambelowtocheckyouranswers. Speaking:☆WorkinpairsanddiscussifyouwanttocelebrateChristmasnextmonth,whatwillyoudoaccordingtotimeorderinthetext?Youcanusethesewordsorphrases:atfirst、afewdayslater、then、onChristmasEve、beforegoingtobed、onChristmasmorning、atlunchtime、afterlunchYoucanbeginlikethis:Atfirst,IwillwritealettertoFatherChristmas….. ☆WhatarethesimilaritiesanddifferencesbetweenChristmasinwesterncountriesandSpringFestivalinChina?Similarities:(1)Peoplemakesnowmenandhavesnowballfights.(2)Thewholefamilygettogether.(3)Parentsgivepresentstotheirchildren.(4)Peoplesendpostcardstotheirfriends.(5)Peoplecleananddecoratethehouse.(6)Peoplehaveafireworkdisplay. Differences:ChristmasinDec.turkeyspuddingscarolsFatherChristmas，Christmastree，stockings……SpringFestivalinJan.orFeb.dumplings,hotpotChicken……CongratulationsSpringFestivalcouplets(春联)LionDanceTime:Specialfood:Specialsongs:Specialthings: Summary(总结)Wegofurthertolearnmoreaboutanimportantwesternfestival—Christmas.CompareChristmaswithSpringFestival.WecanfeeltheatmosphereofChristmasinadvance.Inthislesson: Today’shomework:Acomposition:changespeakingintowritingTopic:Christmas要求：80∽120words 谢谢指导！ 2-1IBMPC微型计算机基本结构IBMPC微机的基本结构Intel8086/8088微处理器功能结构Intel8086/8088总线接口单元（BIU）Intel8086/8088执行单元（EU） IBMPC微机的基本结构中央处理器CPU地址总线存贮器输入/输出接口控制总线数据总线输入设备输出设备 Intel8086/8088微处理器功能结构CPU执行指令的过程：取指令－>分析指令－>执行指令传统微处理器的指令是串行顺序处理方式采用全新的体系结构形式----指令流水线结构(InstructionPipeline)。它把访问存储器与执行指令分成两个独立部件：总线接口单元BIU(BusInterfaceUnit)和执行单元EU（ExecuteUnit)； 8086/8088总线接口单元BIU及执行单元EUBIU的任务和组成BIU的组成图EU的任务和组成EU的组成图 BIU、EU组成图内部总线总线图例：控制线总线内部通信寄存器组通用寄存器组锁1F段寄存器组IPEU控制线路总线接口控制线路指令队列锁2内部总线器加法地址ALUBIUEU 8086/8088执行单元EU的任务EU的任务1、完成指令译码2、完成对数据的各种运算3、提供运算结果的状态标志位4、提供/接收部分运算数据 8086/8088执行单元EU的组成EU的组成1、EU控制线路2、ALU----16位算术逻辑运算部件3、暂存器4、FR----16位标志寄存器提供运算结果的状态标志位。5、通用寄存器组 8086/8088总线接口单元BIU的任务BIU的任务1、完成同存贮器、I/O接口的信息交换。2、形成访问存贮器的20位地址。3、存放部分从存贮器取出的指令。4、完成同EU的数据交换。 8086/8088总线接口单元BIU的组成1、总线接口控制线路2、地址加法器3、段寄存器组4、IP----指令指针（16位）5、指令队列6、内部通信寄存器组'