中考复习专题基数词序数词.ppt

基数词、序数词 数词 数词就是表示事物的数量和顺序的词。 基数词 序数词 数量 顺序 一、基数词、序数词 基数词 序数词 序数词的缩写形式 one two three first second third twelfth 1～3 1,2,3特殊记 1st 2nd 3rd 数字+序数词最后两个字母 4～19 /θ/ four twelve five thirteen six fourteen seven fifteen eight sixteen nine seventeen ten eighteen eleven nineteen ve four fi sixth seventh eigh nin tenth eleventh th f th th th t e 4 th 11th 6th 5 th 7th 8th 9th 10th f thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twel ve th 12th 13th 14th 15th 16th 17th 18th 19th 基数词 基数词 序数词 序数词 缩写 缩写 8减t,9去e, ve 要由f替，然后再加“th” twelfth 20～90 基数词 序数词 缩写 基数词 序数词 缩写 twenty sixty thirty seventy forty eighty fifty ninety twent y ie th thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth y要变ie,最后别忘-th. 20th 30th 40th 50th 60th 70th 80th 90th 21～99 基数词 序数词 缩写 twenty-one thirty-two forty-three fifty-four sixty-five seventy-six eighty-seven ninety-eight ninety-nine twenty- first thirty- second forty- third fifty- fourth sixty- fifth seventy- sixth eighty- seventh ninety- eighth ninety- ninth 21st 32nd 43rd 54th 65th 76th 87th 98th 99th “几十几”要注意，个位序数就可以！ 二、基数词的读法 101—999，三位数，百位与十位/个位之间加and。 百位数读法 101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three 千位数及以上数字的读法 1,000以上的数字,从右向左每三位用“ ，”分开, 分别读为thousand（千） , million（百万）, billion（十亿） 321 4 , thousand four thousand, three hundred and twenty-one 321 654 , 7 , thousand million seven million, six hundred and fifty-four thousand, three hundred and twenty-one 千位数及以上数字的读法 321 654 , 987 , thousand million one billion, nine hundred and eighty-seven million, six hundred and fifty-four thousand, 1 , billion three hundred and twenty-one 18,113,024,790 试一试： eighteen billion,one hundred and thirteen million, twenty-four thousand,seven hundred and ninety. 一、表示数量 1. 十二层楼 2. 一千二百五十个学生 twelve floors 1,250 stu