"Are you all sleeping?" is the Engpsh way of asking if everyone is asleep.

This question is formed using the present simple tense of the verb "to be" (are) and the present participle of the verb "to sleep" (sleeping). The word "all" is used to indicate that the question is directed at a group of people.

This question is commonly used to ask if someone or a group of people are in bed and asleep, either in a casual or formal setting. It can be used to check on someone's well-being or to make sure that everyone is ready to go to bed or start a new activity.

Here are some examples of this question in context, along with their Chinese translations:

"Are you all sleeping? I need to use the bathroom." (你们都在睡觉吗？我需要去洗手间。)
"Are the kids sleeping? I don't want to wake them up." (孩子们都睡觉了吗？我不想把他们弄醒。)
"Are you all sleeping? We have an early start tomorrow." (你们都在睡觉吗？我们明天早起。)