You left the light on. 你一直沒關燈啊。

　　You shouldn't have stayed up so late. 你不應該那么晚才睡。

　　Did you stay up late last night? 昨晚你熬夜了?

　　When did you fall asleep? 你幾點睡著的?

　　When did you go to bed last night? 你昨晚幾點睡的?

　　I'm not sure. 我也說不好。

　　I stayed up the whole night. 我一夜沒睡著。

　　I didn't fall asleep until five o'clock. 我五點才睡著。

　　I'm a night person. 我是個夜貓子。

　　I never get up early. 我從來沒有早起過