八年级英语：Chapter 4 Numbers：Everyone’s language复习课件上海牛津版.ppt

chapter4numbersrevision rivisionofthewords abacus brain calculator lightning 1 almost2 correctandtrue3 strong4 oforlikepeople notanimals5 ontheothersideinagame fight etc 6 agroupofthingsthatworktogether7 growbiggerorstronger becomebetter8 giveorderstoacomputer nearly accurate powerful human against sayandspellthewordsaccordingtothemeanings system develop program 9 usenumberstofindanswers a isa machine ithelpspeopleto fasterandmoreaccuratelybecauseitcandoadifficult inaflash calculator calculating calculate calculation calculate calculate v 计算 calculation n 计算 calculator n 计算器 calculating adj 计算的 10 makeforthefirsttime benjaminfranklinwasafamous he thelightningrod 避雷针 itisagreat inventor invented invention invent v 发明 inventor n 发明家 invention n 发明 invent 11 thataregoingtobementionednext canyouanswerthe questions meplease i llshowyoutheway following follow following following adj 下列的 follow v 跟随 12 notdead canall things forseveraldayswithoutfood 13 verysurprisingwefelt whenwereadthe story living live amazed amazing living adj 活着的 live v 生活 living amazing amazing adj 令人惊奇的 amazed adj 感到惊奇的 revisionofthephrasessaythephrasesaccordingtothemeanings 1 long longago2 notlessthan3 inaveryshorttime4 notinthesameway5 inallone slife6 workouttheproblem inancienttimes atleast inaflash indifferentways inone swholelifetime solvetheproblem 1 wecanusewater suchaswashingclothesorcookingfood 2 libaiwasagreatpoetwholived 3 ittookusonehourto indifferentways inancienttimes solvetheproblem atleastinaflashinancienttimesindifferentwayssolvetheprobleminone swholelifetime 4 yourteacherlooksold hemustbe 50yearsold 5 myfatherlivedinchina 6 thecomputerfinishedthecalculation atleast inhiswholelifetime inaflash keepthesamemeaningofeachsentence 1 ispenttwodaysdoingthisjob it metwodays dothisjob 2 heisstrong hecancarrytheheavysuitcase heis strong hecancarrytheheavysuitcase heisstrong carrytheheavysuitcase took to so that enough to revisionofthesentencestructures 3 thecoatisexpensive hecan tbuyit thecoatis expensive hecan tbuyit thecoatis expensiveforhim buy thecoatisnot forhimtobuy so that cheap enough too to readthetext revisionofthepassageanswerthequestionsaboutthetext whatdidpeoplewriteinmanydifferentways 2 inwhatwaydidpeoplecount 3 whoinventedthezero 4 whywasthezeroaveryimportantinvention peoplewrotenumbersinmanydifferentways peoplecountedintens theindiansinventedthezero becauseitmadeiteasiertowritebignumbersandtocalculate 5 whichwasoneofthefirstcalculatingmachines 6 whydopeoplestilluseabacusestoday 7 whatcanamodernelectroniccalculatordo 8 whydowesaycomputersareverypowerful oneofthefirstcalculatingmachineswasanabacus becausetheyarefastandaccurate itcanadd subtract multiplyanddivide itcanalsocalculatepercentagesandsquareroots becauseitcandoacalculationthatyoucouldnotdoinyourwholelifetimeinaflash 9 howlongdidshakuntala sbraintaketofindtheanswer shakuntala sbraintookfiftysecondstofindtheanswer fillintheblanksaccordingtothepassage everyoneknowstheinternational ofnumbers inancienttimes numberswerewrittenin ways butcountingwasnearlyalwaysin everyoneusesthenumber 1to9pluszero thesystemwasinventedbytheindians makesiteasiertowritebignumbersandto language tens system zero calculate different therearethreecalculatingmachines theabacus themodern calculatorandthecomputer whichismorepowerful thecomputerorthehuman therewasacompetitionbetweenanamazingladywhoisfrom andapowerfulcomputer however theladywon herbrain lesstimetofindtheanswer like computerscan tdoanythingbythemselves someonehadtofirst thecomputer electronic brain india took lightning program whatiseachpartmainlyabout p1 differentwaysofwritingancientnumbers p2 thesystemofnumbers p3 threecalculatingmachines p4 apowerfullivingcomputer gr