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基数词

基数词  

表示数目的词称为基数词。其形式如下:   

(1)从1——10 one,two,three,four,five,six,seven,eight,nine,ten.   

(2)从 11——19 eleven,twelve, thirteen, fourteen, fifteen, sixteen, seventeen,eighteen, nineteen.   

(3)从 20——99 twenty,thirty, forty,fifty,sixty,seventy ,eighty,ninety

     21 twenty-one

     76 seventy-six   

(4)百位数 101 a hundred and one

     320 three hundred and twenty

     648 six hundred and forty-eight   

(5)千位数以上  

     2,648 two thousand six hundred and forty-eight   

     16,250,064 sixteen million two hundred and fifty thousand sixty-four   

     5,237,166,234 five billion,two hundred and thirty-seven million,one hundred and sixty-six thousand,two hundred and thirty-four   

(6)基数词表示确切的数字 

     hundreds of

     thousands and thousands of

   hundreds of thousands of

     tens of hundreds of

     in twos and threes   

(7)表示不确切岁数或年代

     in his thirties   

     in forties

     in the 1960s

(7)基数词的句法功能

   基数词在句中可作主语、宾语、定语、表语、同位语。   

     The two happily opened the box.(作主语)   

     I need three altogether.(作宾语)   

     Four students are playing volleyball outside.(作定语)   

     We are sixteen.(作表语)   

     They three tried to finish the task before sunset.(作同位语)

(8)基数词的写法

     1,000 one thousand   

     1,001 one thousand and one   

     1,300 thirteen hundred; one thousand and three hundred   

     2,034 two thousand and thirty-four   

     6,502 six thousand five hundred and two   

     38,000 thirty-eight thousand   

     45,672 forty-five thousand six hundred and seventy-two   

     500,000 five hundred thousand   

     1,000,000 one million   

     3,123,400 three million, one hundred and twenty-three thousand four hundred      8,000,000 eight million   

     47,000,000 forty-seven million   

     900,000,000 nine hundred million   

     1,000,000,000 a milliard, one milliard(美作:a billion, one billion)   

     1,050,000,000 one billion and fifty million   

     10,000,000,000 ten billion   

     200,000,000,000 two hundred billion   

     1,000,000,000,000 a billion, one billion(美作:a trillion, one trillion)    

(9) 表示分数时分子用基数词,分母用序数词:   

     1/3 one-third(三分之一)

     3/4 three-fourths(四分之三)

     3/37 three and three-sevenths(三十七分之三)

发布时间:2011-08-20 | 访问量:3913次 | 标签:yyw
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