(
课件网) 数词 Numerals 表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。表示数目多少的数词叫基数词；表示顺序的数词叫序数词。 1 基数词（ cardinal number） 1 one two three 4 four 5 five 6 six 7 seven 8 eight 9 nine 10 ten 11 12 13 14 15 16 17 18 19 eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen 20 30 40 50 60 70 80 90 100 twenty thirty forty fifty sixty seventy eighty ninety one hundred 基数词的构成 1）1－12, 独立成词。 one two three four five six seven eight nine ten eleven twelve 2）13--19, 由3－9 + teen构成。 14–fourteen 16--sixteen 17--seventeen 19—nineteen 特殊拼写: 13– thirteen 15--fifteen 18—eighteen 3）20－90, 以-ty结尾。 20—twenty 30--thirty 40—forty 50—fifty 60--sixty 70--seventy 80--eighty 90—ninety 4）21－99， 两位数，十位与个位之间有 “-”。 21 twenty-one 55 fifty-five 99 ninety-nine 5）101—999，三位数，百位与十位/个位之间加and。 101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three 29 7 and 729 hundred seven 03 5 and 再来一个 503 hundred five 109 432 170 865 注： 1、1000以上几个的词，每三位数加一个逗号，第一个逗号前的数为thousand，第二个逗号前的数为million（百万）, 第三个逗号前的数为billion（十亿），第四个逗号前的数为trillion（万亿） 888, 888，888，888，888 eight hundred and eighty-eight trillion, eight hundred and eighty-eight billion, eight hundred and eighty-eight million, eight hundred and eighty-eight thousand, eight hundred and eighty-eight trillion [?tr?lj?n] 万亿 billion [?b?lj?n] 十亿 million [?m?lj?n] 百万 thousand ['θa?znd] 千hundred [?h?ndr?d] 百 29 , 431 500 7 6 , , thousand, hundred million, billion, and 6) 1，000以上数目,从右向左每三位用“，” 分开,分别读为thousand , million, billion 千 百万 十亿 基数词的构成 基数词的构成 four thousand, three hundred and twenty-one seven million,six hundred and fifty four thousand, three hundred and twenty-one 7,654,321 1,987,654,321 4321 4,321 one billion, nine hundred and eighty-seven million,six hundred and fifty-four thousand, three hundred and twenty-one 1. hundred thousand (表示具体数字) million billion 2. hundreds thousands (表示概数) millions billions 三.基数词的用法 数词 (several)+ + of 基数词的用法 1、表示具体数目,hundred, thousand, million不用复数 表示不确定数目,用复数。即hundreds of(数百), thousands of(数千), millions of(数百万)+ 名词复数。 1) Our country has a population of 1,300 million people. 2) There are several thousand students in our school. 3) After the war, thousands of people became homeless. warming up 1. _____ tress were planted on the mountain last year. A. Thousands of B. Thousand of C. Five thousand of D. Five thousands. 2．_____ of the students are girls in our class． A．Two three?B．Two threes C．Two thirds?D．Second three 3.--When was he born? --He was born on _____. A. second of October B. the October three C. October the second D. three of October 1. — If a = 3, b=4, what’s the answer to the problem, a+2ab+1=? — t ... ...
