thirty-one是31。
复数:thirties,同义词:number
1、( number ) 三十
She was driving at thirty。她车速30码。
2、( in age ) 三十岁
thirties,to be thirty,是三十岁
She's well over thirty。她三十好几岁了。
扩展资料:
英文数字写法
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,21 - twenty-one,22 - twenty-two,23 - twenty-three,24 - twenty-four,25 - twenty-five,26 - twenty-six,27 - twenty-seven,28 - twenty-eight,29 - twenty-nine,30 - thirty,40 - forty,50 - fifty,60 - sixty,70 - seventy,80 - eighty,90 - ninety,100 - one hundred。
三十一
31