It's August thirty-one还是It's August thirty-first哪个对?

It's August thirty-one还是It's August thirty-first哪个对?
It's August thirty-one还是It's August thirty-first哪个对?

It's August thirty-one还是It's August thirty-first哪个对?
后一个

It's August thirty-first 表示日期都是按序号方式来表示

It's August thirty-first
日期都是按序号方式来表示

这是表示日期的表达，应该选择第2个

是It's August thirty-first正确的。或者It's August 31st

用It's August thirty-first。
日期表达需用序数词~~

后一个

后面的对