英文数字字表达和用法.ppt

什么叫数词 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( cardina| number) I one 11 eleven 2 two 12 twelve 20 twenty 3 three 13 thirteen 30 y 4 four 14 fourteen 40 forty 5 five 15 fifteen 50 fifty 6 six 16 SIxteen 60 Sixty 7 seven 17 seventeen 70 seventy 8 eight 18 eighteen 8( eighty nine 19 nineteen 0 ninety 10 ten o0 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- thirteen15- -fifteen18 eighteen 3)20-90,以结尾。 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-oI 55 fifty-five 99 ninetv-nine 5)101999,三位数,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 基数词三位数的构成 and 729—729 hundred seven hundred and twenty-nine