英语中基数词、序数词、分数、小数和百分数的读法

1、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,two hundred and twenty-three,four hundred and sixteen,eight hundred and nine,how to say? 百 千 万 十万 百万 千万 亿 十亿,hundred,thousand,ten thousand,one hundred thousand,million,ten million,one thousand million,billion,c

2、. 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,one thousand and one,four thousand,nine thousand, seven hundred and forty-three,a (one) hundred and seventy-four thousand, three hundred and one,seven hundred and fifty milli

3、on,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

4、 a hundred and fifty-three ,twentieth,fortieth,twenty-first,twenty-second,thirty-fifth,ninety-ninth,a hundred and fifty-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,two and three-fifths,thirty and seven-eighths,3.分数词的读法,2,3,5,30,7,8,一些特殊的表达法, ,a /

5、one half,a / one quarter,three quarters,小数的读法 7.8 0.4 0.03 0.125 14.397,seven point eight,（zero） point four,（zero） point zero three,(zero) point one two five,fourteen point three nine seven,5) 百分数的读法 27% 45% 86% ,twenty-seven percent,forty-five percent,eighty-six percent,thankyou,practice read the f

6、ollowing numbers.,2/5 5/8 9/10 3/8,two-fifths,five-eighths,nine-tenths,three-eighths,0.5 0.8 1.23 796,000,point five,point eight,one point two three,seven hundred, ninety-six thousand,find the mistakes,52,470,383- fifty-two million, four hundred and seventy, three hundred and eighty-three,100,000,00

7、0- hundred million,365,528,462- three hundred and sixty-five million, five hundred and twenty-eight thousand, four hundred and sixty-two,1,000,000,000- one thousand/ one billion,52,470,383- fifty-two million, four hundred and seventy thousand, three hundred and eighty-three,100,000,000- one hundred

8、million,now lets say:2/5 5/8 9/10 3/8 5/6 1/2 1/4 3/4,practice,count these,what is of 6,000,000? how much is 35,246,000 plus 12, 800,000? what is 25% of 200,000,000? how much is 260,408,396 plus 5,284,700? what is of 1,000,500,000? what is 10% of 800,000,000?,exercise 9 on p 93 answers:b b c b,work in pair,we write,we say,400,000 2,000,000 5,100,000 48,000,500 50,567,489 123,456,789,four hundred thousand,two million,five million one hundred thousand,forty-eight million, five hundred,fifty million, five hundred and sixty-seven tho