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"let me know if you don't" vs "let me know if you didn't"

Both phrases are correct, but they are used in different contexts. 'Let me know if you didn't' is used when referring to a past action that may or may not have been completed, while 'Let me know if you don't' is used when referring to a future action that has not yet occurred.

Last Updated: March 25, 2024

let me know if you don't

This phrase is correct and commonly used when referring to a future action that has not yet occurred.

This phrase is used to ask someone to inform you if they do not do something in the future. It implies that the action has not happened yet.

Examples:

  • Let me know if you don't finish the project on time.
  • Please let me know if you don't attend the meeting tomorrow.

Alternatives:

  • Let me know if you fail to
  • Let me know if you neglect to
  • Let me know if you miss
  • Let me know if you don't manage to

let me know if you didn't

This phrase is correct and commonly used when referring to a past action that may or may not have been completed.

This phrase is used to ask someone to inform you if they did not do something in the past. It implies that the action could have been done, but you are unsure.

Examples:

  • Let me know if you didn't receive the email I sent yesterday.
  • Please let me know if you didn't finish the report as planned.

Alternatives:

  • Let me know if you haven't
  • Let me know if you failed to
  • Let me know if you neglected to
  • Let me know if you missed

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