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 1 基数词的读法 A 23 89 B 223 416 809 twenty three eighty nine twohundredandtwenty three fourhundredandsixteen eighthundredandnine Howtosay 百千万十万百万千万亿十亿 hundred thousand tenthousand onehundredthousand million tenmillion onethousandmillion billion C 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 onethousandandone fourthousand ninethousand sevenhundredandforty three a one hundredandseventy fourthousand threehundredandone sevenhundredandfiftymillion 2 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 first second third fifth eighth ninth twelfth B 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 twentieth fortieth twenty first twenty second thirty fifth ninety ninth ahundredandfifty third 基数词 分子 序数词 分母 分子大于 分母用复数 如 2 3 7 9 5 12 one fourth two thirds seven ninths five twelfths twoandthree fifths thirtyandseven eighths 3 分数词的读法 2 3 5 30 7 8 一些特殊的表达法 a onehalf a onequarter threequarters 小数的读法7 8 0 4 0 03 0 125 14 397 sevenpointeight zero pointfour zero pointzerothree zero pointonetwofive fourteenpointthreenineseven 5 百分数的读法27 45 86 twenty sevenpercent forty fivepercent eighty sixpercent Thankyou PracticeReadthefollowingnumbers 2 55 89 103 8 two fifths five eighths nine tenths three eighths 0 50 81 23796 000 pointfive pointeight onepointtwothree sevenhundred ninety sixthousand Findthemistakes 52 470 383 fifty twomillion fourhundredandseventy threehundredandeighty three 100 000 000 hundredmillion 365 528 462 threehundredandsixty fivemillion fivehundredandtwenty eightthousand fourhundredandsixty two 1 000 000 000 onethousand onebillion 52 470 383 fifty twomillion fourhundredandseventythousand threehundredandeighty three 100 000 000 onehundredmillion Nowlet ssay 2 55 89 103 85 61 21 43 4 practice Countthese Whatis of6 000 000 Howmuchis35 246 000plus12 800 000 Whatis25 of200 000 000 Howmuchis260 408 396plus5 284 700 Whatis of1 000 500 000 Whatis10 of800 000 000 exercise9onP93Answers BBCB Workinpair Wewrite Wesay 400 0002 000 0005 100 00048 000 50050 567 489123 456 789 fourhundredthousand twomillion fivemilliononehundredthousand forty eightmillion fivehundred fiftymillion fivehundredandsixty seventhousandfourhundredandeighty nine onehundredandtwenty threemillionfourhundredandfifty sixthousandsevenhundredandeighty nine