I didn't know that vs I don't know that

Both phrases are correct, but they are used in different contexts. 'I didn't know that' is used to express past tense, indicating that the speaker was unaware of something in the past. 'I don't know that' is used to express present tense, indicating that the speaker is currently unaware of something.

Last updated: March 27, 2024 • 1452 views

I didn't know that

This phrase is correct and commonly used in English to express past tense.

This phrase is used to indicate that the speaker was unaware of something in the past.

Examples:

I didn't know that you were coming to the party last night.
She didn't know that the store was closed on Sundays.

Show examples from the web [+]
Last updated: November 15, 2024

Mar 17, 2024 ... I didn't know that. Yes, I did wash the dishes. Yeah, I did cry during the movie. Those 3 sentences are ...
Jan 17, 2023 ... I Didn't Know That! Leave No Trace Principle #5 - Minimize Campfire Impacts · I Didn. Having a campfire can be a fun part of an outdoor trips ...
16 hours ago ... Oh, I didn't know that Ortho was from the cine club! Discussion (NA). Maybe this was shown in some vignette, but it isn't an info that ...
Feb 29, 2016 ... I Wish I Didn't Know That. Real-life tales of close calls, screw ups, and nuclear near misses. Spin Wheel
Oct 1, 2024 ... I didn't know that I would instantly be part of a fierce and brave community of breast cancer survivors who would welcome me with kindness and ...
I Didn't Know That! is a lighthearted revue of first facts, selected oddities and world records. The Guinness Book of World Records is incorporated in this ...
I well knew that one could break one's arms and legs before, and that then afterwards that could get better but I didn't know that one could break one's ...
I didn't know that morning the pain that day would bring When a golden heart stopped beating and I couldn't do a thing No words can heal the heartache or...
May 1, 2015 ... 'I didn't know that until now' is commonly used. You have just learned something for the first time. 'I haven't known that until now' doesn't sound natural to ...
Sep 6, 2018 ... 'I didn't know that women were allowed to be writers': Jill Murphy on the magic of making your own worlds and why Mildred Hubble is just like ...

Alternatives:

I wasn't aware of that
I had no idea about that

I don't know that

This phrase is correct and commonly used in English to express present tense.

This phrase is used to indicate that the speaker is currently unaware of something.

Examples:

I don't know that you can't bring pets into the building.
He doesn't know that the meeting has been rescheduled.

Show examples from the web [+]

I don't know that I ever will.
I don't know that the reason matters.
I don't know that many people get a chance to fulfill that.
Well, you're both more experienced than me. I don't know that my opinion matters.
I don't know that they pinched it.
I don't know that that's a reasonable concern.
I don't know that I could do anything differently.
I don't know that it's really him.
I don't know that it would have gone any different.
I don't know that I love them.
But I don't know that we can start a relationship.
I don't know that you remind me.
I don't know that I'd blame her.
But I don't know that you two newbies...
Because I don't know that I'd have accepted him.
I don't know that it matters.
I don't know that I could climb anywhere.
I don't know that I'll ever be the kind of person that makes it easy.
But I don't know that I would have had the strength to do it myself.
I don't know that I ever really did.

Alternatives:

I'm not aware of that
I have no idea about that

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I didn't know that vs I don't know that

I didn't know that

I don't know that

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