What were you doing at these times?意思,times为何+s ?

What were you doing at these times?意思,times为何+s ?

这是at ……times这个固定用法，意思即在……时候
相关短语
Safety procedure shall be followed at all the times.在任何时候都应遵守安全程序

Every man is fool sometimes,but none at all the times!每个人都有愚蠢的时候

at the following times在以下的时间

Eat at the right times of the day.在正确的时间进餐

at times the wrongs mouth出生富贵

at the best of times在最有利的情况下；当情况最佳时

even at the best of times即使在最有利的情况下

Martin Wolf, Great Britain (associate editor and chief economics commentator at the Financial Times)马丁?沃尔夫

have regular habits/be regular in one's habits, ie do the same things at the same times every day作息时间有规律

at different times of the day在一天的不同时间

times是这段时间的意思追问time是不可数名词，不能加s追答解释为“时候”的意思时，必须加s。

这几个时间点的意思。

这些时间你在做什么？这段时间不可能只做一个动作，其实是分开成很多的小时间来利用的，所有就是有很多种的 时间了 ，所以 time 要加 s ，times。