Don't give it up!Let's try it___ third time.照理说序数词前用the但这里为什么用a呢?

Don't give it up!Let's try it___ third time.照理说序数词前用the但这里为什么用a呢?
Don't give it up!Let's try it___ third time.
照理说序数词前用the但这里为什么用a呢?

Don't give it up!Let's try it___ third time.照理说序数词前用the但这里为什么用a呢?
a third 表示已经做过两次了 再做一次
指相同的动作重复,要用不定冠词a;
the third指第三次,第三个

a third 表示已经做过两次了 再做一次

因为......