你为什么觉得累 怎么翻译

Why are you feeling tired？

最佳时态是用现在进行时态（因为是口头提问，肯定是关于现在，如果具体情境有变，再改时态）。

另外你的tired写成了try的过去式了。

Why do you feel tired?

Why feel tired?

what's the source of your exhaustion.

你用Were是没错，但还是用“Why did you feel tired”好点，也可以用进行时：Why do you feeling tired?

Why are you feel tired?