数字的英文读法-(1)ppt课件

.,数字及数学表达式的英文读法,.,1.基数词,英文是以每三位划分一个单位:thousand,million,billion,trillion。如:134,256,366,906读作:onehundred(and)thirty-fourbillion,twohundred(and)fifty-sixmillion,threehundred(and)sixty-sixthousand,ninehundred(and)six.(在美式英语中,往往省略hundred后面的and)。,.,一些特殊读法,特别是在财经新闻中常常遇到违反常规的读法。如以下实例:例1:InNewYork,theDowShareIndexclosed45higherat6,783.(读作:sixty-seveneighty-three)例2:TheDowJonesIndustrialAverageclosedup96pointsat10,116.TheStandardandPoors500Indexgained6pointstocloseat1,254.(10,116读作:tenthousandonehundredsixteen;1,254读作:twelvehundredandfifty-four),.,2.序数词,序数词中除first,second,third,其余都是在基数词末尾加上-th构成,只有部分在拼写方法上略有变动。LessonNine=theninthlesson第九课;WorldWar(WorldWarTwo)=thesecondworldwar第二次世界大战等。但要注意在提及国王或女王时,只能用序数词,而不能用基数词。如:QueenElithabethII应读作:QueenElithabeththesecond,而不能读作QueenElithabethtwo。,.,3.号码,电话号码,房间号,帐号,汽车牌号等按编号的顺序一个一个地读出,遇到“0”时读oh,相连的两个相同的可读作double。Myofficephonenumberis268-8064extension321.Myaccountnumberis38800685.,.,电话号码,读电话号码首先要按照国家代码、区号、号码本身来分开,如86然后逐个数字读出。3+4:3837898读作threeeightthree,seveneightnigheight;4+428465258读作twoeightfoursix,fivetwofiveeight。,.,如果遇到两个或三个相连数字相同,可分别用double和treble。但开头三个数字相同,通常仍应该分开读,如:5553298应读作fivefivefive,threetwonineeight,而不是treblefive,threetwonineeight。而且运用double或treble时,仍应遵循上述数字分组规则,如:7733298应读作doubleseventhree,threetwonineeight,而不是doublesevendoublethreetwonineeight。,.,门牌号,通常情况下,三位门牌号逐个读出,四位门牌号每两个数分一组。如:Classroom305读作:Classroomthree-oh/zero-five;Room2534读作:Roomtwenty-fivethirty-four。,.,“0”的读法,0可以读作zero,nought,null,nil,nothing,oh。nil多见于体育赛事,如:3:0读作threenil或threetonothing。,.,4.分数,分数的分子用基数词表示,分母用序数词表示。若分子大于1,分母用复数。如:1/3,读作:onethird;2/7读作:twosevenths。如果分子或分母数值较大,或在数学计算中,常常会用over来读分数线,如:32/46读作thirty-twooverforty-six。但要注意1/2,1/4和3/4分别读作:a(one)half,a(one)quarter,threequarters。,.,5.小数,小数是用数字来表示的,小数点后无论有多少位数也不要在中间插入逗点;小数点读作point;小数点后面的数字要一个一个地读出。9.45读作：“ninepointfourfive”,（但有时也会听到“ninepointforty-five”的特例读法。）如果小数点前为0,读作nought或zero。.,.,6.比率、百分数,比率的表示通常都用数字,有时亦可用文字。Theratiosof1to3and5to15arethesame.Youhaveafiftytofiftychancetowinthegame.百分数用percent或percent表示,即%Thepricehasbeenreducedby20percent(or20%)sinceMay.Thenumberofvisitingpatientsis30percent(or30%)lessthanthesametimelastyear.,.,7.日期,年份的表示,在年的表示中,如果数字较小,或者新世纪初的几个年份,可以直接当作基数词读出,如:357A.D.读作“threehundredfifty-sevenA.D.”;2006读作“twothousand(and)six”。数值较大时,习惯于两位一组读出,如:1980读作“nineteeneighty”。,.,7.日期,年份的表示,May22,也写作May22nd;July15，也写作July15th;August1，也写作August1st;1949;1804;1700;2000;685B.C.;1960s(or1960s)。,.,8.时刻的表示,如果想表示刚好在某一个整点,如11:00,可以用“at11oclocksharp/onthehour/onthestrike”。而12:00也可读为“atnoon”;00:00为“atmidnight”。14:00：fourteenhundred9:1511:265:3012:0014:1524:00,.,单位的表达,23feet236inchesThisparcelweighs3pounds5ouncesIboughta4feetby5feetrug.Thetemperaturedroppedto-22.Hisheightis178cm.(orHeis178cmtall.)Thesizeoftheboxissixfeetbyfourbythreeandtwo-thirds.,.,货币,$18.29$15C$268JP￥10,000,WilliamElizabeth,帝王第世,.,数学表达式的读法,“读作plus或and;“读作minus或from;“读作times或multipliedby;“读作dividedby等。5813Fivepluseightisthirteen.15-69Fifteenminussixisnine.4520Fourtimesfiveistwenty.Fourmultipliedbyfiveistwenty.824Eightdividedbytwoisfour.,.,数学表达式的读法,ABAisgreaterthanB.ABAisgreaterthanorequaltoB.ABAislessthanB.ABAislessthanorequaltoB.ABAisnotequaltoB.Fivesquaredistwenty-five.Fivecubedisonehundredandtwenty-five.Twotothefourthpowerissixteen.Thesquare(orsecond)rootofsixteenisfour.Thecube(orthird)rootoftwenty-sevenisthree.,.,Logicthereexistforallpqpimpliesq/ifp,thenqpqpifandonlyifq/pisequivalenttoq/pandqareequivalent,数学表达式的读法,.,SetsxAxbelongstoAxAxdoesnotbelongtoAABAiscontainedinB/AisasubsetofBABAcontainsB/BisasubsetofAABAcapB/AmeetB/AintersectionBABAcupB/AjoinB/AunionBABAminusB/thediferencebetweenAa