英语中基数词、序数词、分数、小数和百分数的读法

语法英语中基数词、序数词、分数、小数和百分数的写法,读法1.基数词的读法：A.23—89—B.223—416—809—twenty-threeeighty-ninetwohundredandtwenty-threefourhundredandsixteeneighthundredandnineHowtosay?百千万十万百万千万亿十亿hundredthousandtenthousandonehundredthousandmilliontenmilliononethousandmillionbillionC.1000以上的数从后向前数，每三位数加一“,”（千分位）；第一个“,”号前为thousand;第二个“,”号前为million;第三个“,”号前为billion。如：1,001—4,000—9,743—174,301—750,000,000—onethousandandonefourthousandninethousand,sevenhundredandforty-threea(one)hundredandseventy-fourthousand,threehundredandonesevenhundredandfiftymillion2.序数词的读法序数词一般以与之相应的基数词加词尾-th构成，如：tenth（第十），但下面这些基数词在变序数词时，有特别的地方。如：A.one—two—three—five—eight—nine—twelve—firstsecondthirdfiftheighthninthtwelfthB.以-ty结尾的词，要先变-y为-i，再加-eth。如：twenty—forty—C.以one,two,three,five,nine收尾的多位序数词，要照第一条方法变。如：twenty-one—twenty-two—thirty-five—ninety-nine—ahundredandfifty-three—twentiethfortiethtwenty-firsttwenty-secondthirty-fifthninety-ninthahundredandfifty-third基数词（分子）／序数词（分母），分子大于１，分母用复数．如：¼—2/3—7/9—5/12———one-fourthtwo-thirdsseven-ninthsfive-twelfthstwoandthree-fifthsthirtyandseven-eighths3.分数词的读法2353078一些特殊的表达法½—¼—¾—a/onehalfa/onequarterthreequarters小数的读法7.8—0.4—0.03—0.125—14.397—sevenpointeight（zero）pointfour（zero）pointzerothree(zero)pointonetwofivefourteenpointthreenineseven5)百分数的读法27%—45%—86%—twenty-sevenpercentforty-fivepercenteighty-sixpercentPracticeReadthefollowingnumbers.2/55/89/103/8two-fifthsfive-eighthsnine-tenthsthree-eighths0.50.81.23796,000pointfivepointeightonepointtwothreesevenhundred,ninety-sixthousandFindthemistakes52,470,383-----fifty-twomillion,fourhundredandseventy,threehundredandeighty-three100,000,000------hundredmillion365,528,462-----threehundredandsixty-fivemillion,fivehundredandtwenty-eightthousand,fourhundredandsixty-two1,000,000,000-----onethousand/onebillion52,470,383-----fifty-twomillion,fourhundredandseventythousand,threehundredandeighty-three100,000,000------onehundredmillionNowlet’ssay:2/55/89/103/85/61/21/43/4practiceCountthese1.Whatis½of6,000,000?2.Howmuchis35,246,000plus12,800,000?3.Whatis25%of200,000,000?4.Howmuchis260,408,396plus5,284,700?5.Whatis¾of1,000,500,000?6.Whatis10%of800,000,000?3,000,00048,046,00050,000,000265,693,096750,375,00080,000,000exercise9onP93Answers:BBCBWorkinpairWewriteWesay400,0002,000,0005,100,00048,000,50050,567,489123,456,789fourhundredthousandtwomillionfivemilliononehundredthousandforty-eightmillion,fivehundredfiftymillion,fivehundredandsixty-seventhousandfourhundredandeighty-nineonehundredandtwenty-threemillionfourhundredandfifty-sixthousandsevenhundredandeighty-nine