
It should be 'lie' down, but this sentence makes no sense.

lay —> lie
Try this instead:
At what time do you usually lie down?
OR, more simply,
When do you usually lie down?

"When do you usually lie down?" is an improvement over the original, but an English speaker would virtually always say "What time do you usually go to bed?"
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This sentence was initially added as a translation of sentence #726702
added by lucasjl, January 25, 2011
linked by lucasjl, January 25, 2011
linked by akvo, June 19, 2011
linked by duran, August 20, 2015
edited by AlanF_US, August 16, 2021
linked by Talawaman, January 7, 2025