When we reached the station,the train had not arrived,

问题描述:

When we reached the station,the train had not arrived,
so we
A.had not needed to hurry 请问这个为什么不成

didn't need to do表示:过去不必做某事,事实上也没做.
needn't have done表示:过去不必做某事,但事实上做了.
没见过had not needed to这种表达,
可以这样说
So we didn't need to hurry