�。ㄎ澹�數(shù)詞

　　1．基數(shù)詞：

　　1－12 13－19 20－90 100－

　　1 one 13 thirteen 20 twenty 100 a hundred

　　2 two 14 fourteen 21 twenty-one 300 three hundred

　　3 three 15 fifteen 22 twenty-two 1,000 a thousand

　　4 four 16 sixteen 30 thirty 5,000 five thousand

　　5 five 17 seventeen 40 forty 1,000,000 a million

　　6 six 18 eighteen 50 fifty 1,000,000,000 a billion

　　7 seven 19 nineteen 60 sixty

　　8 eight 70 seventy

　　9 nine 80 eighty

　　10 ten 90 ninety

　　11 eleven

　　12 twelve

　　2．序數(shù)詞：

　　1-10 11-19 20-90 100-

　　1 first 1st 11 eleventh 11th 20 twentieth 20th 100 one hundredth 100th

　　2 second 2nd 12 twelfth 12th 21 twenty-first 21st 103 one hundred and third 103rd

　　3 third 3rd 13 thirteenth 13th 30 thirtieth 30th 134 one hundred and thirty-fourth 134th

　　4 fourth 4th 14 fourteenth 14th 37 thirty-seventh 37th 200 two hundredth 200th

　　5 fifth 5th 15 fifteenth 15th 40 fortieth 40th 1000 one thousandth 1,000th

　　6 sixth 6th 16 sixteenth 16th 50 fiftieth 50th 1,000,000 one millionth 1,000,000th

　　7 seventh 7th 17 seventeenth 17th 60 sixtieth 60th 1,000,000,000 one billionth 1,000,000,000th

　　8 eighth 8th 18 eighteenth 18th 70 seventieth 70th

　　9 ninth 9th 19 nineteenth 19th 80 eightieth 80th

　　10 tenth 10th 90 ninetieth 90th

　　○1作主語：The first is better than the second .

　　○2 作賓語：He was among the first to arrive .

　　○3 作表語：He is the first to come to school .

　　○4 作定語：The ninth letter of the word "restaurant" is "n" ./ There are three thousand workers in the factory .
 

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