I'd like to know the difference between

  1. Why don't you do it?
  2. Why do you not do it?"

Could you please let me know the differences?

  • I recommend you to post it on ELL. Commented Jan 13, 2018 at 21:37
  • Would you tell us where you saw the second sentence?
    – Cardinal
    Commented Jan 13, 2018 at 22:39

1 Answer 1


Both are correct. What was originally just a contraction of "do not" has become a word in itself, and can now be placed where the two separate words can't.

Both "Don't you..." and "Do you not..." are correct, but you can't re-expand "Don't you..." into "Do not you...".

The meaning of the two are the same, but "Do you not..." is considered more formal in some situations.

This is quoted from ELL as an accepted answer.


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