英语中基数词、序数词、分数、小数和百分数的读法.ppt

语法英语中基数词、序数词、分数、小数和百分数的写法,读法基数词的读法：eighty-ninefourhundredandsixteeneighthundredandninethreeA.23—89—01416—809—twohundredandtwenty-threeB.223—02Howtosay?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-third3.分数词的读法基数词（分子）／序数词（分母），分子大于１，分母用复数．如：?—2/3—7/9—5/12———one-fourthtwo-thirdsseven-ninthsfive-twelfthstwoandthree-fifthsthirtyandseven-eighths2353078一些特殊的表达法?—?—?—a/onehalfa/onequarterthreequarters小数的读法7.8—0.4—0.03—0.125—14.397—sevenpointeight（zero）pointfour（zero）pointzerothree(zero)pointonetwofivefourteenpointthreenineseven百分数的读法27%—45%—86%—1sevenpercent2forty-fivepercent3eighty-sixpercent4PracticeReadthefollowingnumbers.tenthsfifths2/55/89/103/8eighthseighths123450.50.81.23796,000pointfivepointeightonepointtwothreesevenhundred,ninety-sixthousand52,470,383-----fifty-twomillion,fourhun