用来表示多少和第几的词叫数词。数词可分为基数词和序数词两类。 1. 基数词:用来表示多少的词叫基数词。 1 one 11 eleven 20 twenty 100 one hundred 2 two 12 twelve 30 thirty 1,000 one thousand 3 three 13 thirteen 40 forty 1,000,000 one million 4 four 14 fourteen 50 fifty 10,000,000 ten million 5 five 15 fifteen 60 sixty 100,000,000 one hundred million 6 six 16 sixteen 70 seventy 1,000,000,000 a billion 7 seven 17 seventeen 80 eighty 8 eight 18 eighteen 90 ninety 9 nine 19 nineteen 10 ten ①13-19 后面都是teen,20-90 后面都是ty. ② 35 → thirty-five 29 → twenty-nine ③179 → one hundred and seventy – nine 205 → two hundred and five ④5893→ five thousand eight hundred and ninety-three 基数词中没有百、千的单位词,用千(thousand)和百万(million)来表达数字。 1万=10 thousand 1亿=100 million 10亿=a thousand million= 1 billion 2. 基数词的用法 ①当基数词hundred, thousand, million和billion表示大量的确定的数目时,不能在词尾+s. two hundred students 200个学生 five thousand years 5000年 ②当基数词hundreds, thousands, millions和 billions表示大量的不确定的数目,后面+of。 hundreds of people 数以百计的人 thousands of trees 成千上万棵树 ![]() |
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