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if you haven't done so vs if you haven't do so

The correct phrase is 'if you haven't done so.' The verb 'done' should be used in the past participle form after 'have' in this context. 'Do' is the base form of the verb, so it is not suitable in this structure.
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Explained by Jennifer
Editor at TextRanch

Last updated: August 16, 2024 • 19762 views

if you haven't done so

This phrase is correct and commonly used in English.

This phrase is used to refer to completing an action that was previously mentioned or implied. It is a polite way to remind someone to do something.

Examples:

  • Please submit your report by Friday if you haven't done so already.
  • Remember to lock the door if you haven't done so yet.
  • Feel free to contact us if you haven't done so already.
  • You can sign up for the event online if you haven't done so already.
  • Please let me know your availability if you haven't done so already.
  • Oct 31, 2013 ... 1. I guess you could try this website if you haven't done so yet. 2. I guess you could try this website if you haven't already done so. Which is correct?
  • 1 day ago ... If you haven't done so already, open a chat to configure ChatGPT for your specific needs. Here's what I did: · Comments Section · Community Info ...
  • Oct 1, 2024 ... If you haven't done so, can I encourage you to check out my new book Taken as Red - described in the Guardian review as the “most thoroughly ...
  • Nov 27, 2018 ... If you haven't done so yet....follow me on Instagram at rebeccasweet_. You can get an inside look at what my life is like when I'm not on ...
  • Mar 21, 2010 ... "If you haven't done so already" means "if you haven't done whatever the writer suggests now/yet." Sometimes the phrase comes before the suggestions.
  • If you haven't done so already, check out Jonny and Dudu Tassa - דודו טסה upcoming collaborative album 'Jarak Qaribak'. Pre-order the album and listen to...
  • Nov 9, 2023 ... If you haven't done so already, treat your ears to the career stories, tips and advice from these 8 inspirational women who were all kind ...
  • If you haven't done so yet, please take the time to check out their YouTube channel!

Alternatives:

  • if you haven't completed it
  • if you haven't finished it
  • if you haven't taken care of it
  • if you haven't accomplished it
  • if you haven't carried it out

if you haven't do so

This phrase is incorrect. 'Do' should be replaced with the past participle 'done' to maintain the correct grammatical structure.

  • Feb 27, 2022 ... • 3y ago •. Make sure you talk to her dad. If you haven't do so then rest at the table. Fixed it for me. Upvote 1. Downvote Reply reply
  • Jun 19, 2014 ... Did you install the drivers? If you haven't, do so and that will fix this issue. If you have, try reinstalling them again.
  • Nov 3, 2021 ... Things might be different in EMEA or AMER regions, so be sure to contact partners@cloudflare.com if you haven't do so. user6818: What are ...
  • Aug 21, 2023 ... ... If you haven't do so yet, write this short email. Dear Professor ABC, I am XYZ, your student in Class 123. I have enjoyed your class and was ...
  • Apr 11, 2023 ... If you haven't do so already, go to Account>Hide and Show Accounts, and check the Financial Institution column to see if any other accounts ...
  • Oct 27, 2020 ... I have 4 Qi Chargers and ALL charge my iPhone 12 Pro Max as expected. Have you force restarted your phone? If you haven't do so: Press and ...
  • Seniors don't forget that there is time to take your senior portraits if you haven't do so. If your child has not signed up to take their senior portrait ...
  • Mar 21, 2022 ... If you haven't do so already, have a look in your menu at Help > Formulas and Functions Help, which covers them all. Thanks for the green ...
  • Mar 20, 2018 ... It might not help but if it were me I would do a full flush regardless and change to stainless lines if you haven't do so already. It's very ...

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