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  1. Newbie
    Student or Learner
    • Member Info
      • Native Language:
      • Persian
      • Home Country:
      • Iran
      • Current Location:
      • Iran

    • Join Date: Apr 2014
    • Posts: 4
    #1

    I don't know up to now

    Dear Sir/Madam,

    I have got a question , what does "I don't know up to now" mean?
    Which one is correct "I don't know up to now" or "I didn't know up to now"?

    Best Regards,

    • Member Info
      • Native Language:
      • American English
      • Home Country:
      • United States
      • Current Location:
      • United States

    • Join Date: Apr 2009
    • Posts: 12,307
    #2

    Re: I don't know up to now

    "I don't know up to now" is not natural. It would mean that you do not know and you continue to not know. So, simply "I don't know" would suffice.

    "I didn't know up to now" is a little better. It means that you just learned. You know now, but you did not until this very moment.

    "I didn't know until now" is the natural way to say this.

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