基数1 one,2 two,3 three,4 four,5 five,6 six,7 seven,8 eight,9 nine,10 ten,11 eleven,12 twelve,13 thirteen,14 fourteen,15 fifteen,16 sixteen,17 seventeen,18 eighteen,19 nineteen,20 twenty,30 thirty,40 forty,50 fifty,60 sixty,70 seventy,80 eighty,90 ninety,100 a hundred,1,000 a thousand,1,000,000 a million,1,000,000,000 a billion.