I couldn't have found any differences between them. Are there any ? or do both of them have the same meaning ?

  • The second sentence sounds a bit like causation: "Because I was sleeping, it started to snow." IMO it would be better to use 'while' instead of 'as' in both sentences. Compare with "as I fell / was falling asleep..." The 'as' seems more related to an event, not a duration of time. Commented Jun 30, 2021 at 12:18
  • Why would you think there is such a difference? Which are the rules you have in mind?
    – fev
    Commented Jun 30, 2021 at 12:18

1 Answer 1


No, there is no difference in this case.

"I slept" and "I was sleeping" can have different uses, but in this case, when the other action occurred at the same time, there is no difference.

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