'None that I know of' vs 'Not that I know of'

[Tom]

Hello everybody

Are the given expressions same?

When can they possibly be used? Please answer in detail.

None that I know of
Not that I know of

Thanks in advance

Tom

[Yankee]

Hi Tom

Where in the world do all your questions come from?

Your two sentences are similar in meaning, but the questions they answer might have different formats.

Examples:

Both of your sentences are possible here:
Q: Did he have any problems downloading the program?
A: None that I know of.
-- OR --
A: Not that I know of.

(The "None that I know of." sentence follows a "yes/no" question with the words "any + noun" in it.)

Only one of your sentences is possible here:
Q: Has he received the bill yet?
A: Not that I know of.

Amy

[Tom]

Thank you Amy

You are really a great help!

Can you shed some more light on the subject?

For example, you wrote:

Only one of your sentences is possible here:
Q: Has he received the bill yet?
A: Not that I know of.

If I add any in the sentence, then? i.e,
*HAS HE RECEIVED ANY BILL YET?(what should be the answer now?)

To cut a long story short, should I understand that NOT THAT I KNOW OF can be used in any format of the question, but NONE THAT I KNOW OF can only be used with any+noun,?

Waiting as usual

Tom

[Yankee]

Hi Tom

Normally it would be "any + plural noun" (countable noun) or "any + uncountable noun" in the question.

The word "none" in the answer basically means "not any of them" or (with an uncountable noun) "not any of it".

The word "the bill" doesn't work for the "None that I know of" answer because you would be asking only about one specific bill.

So:
Q: HAS HE RECEIVED ANY BILL YET? - or - HAS HE RECEIVED ANY of the BILLs YET?
A: None that I know of.
A: Not that I know of.

Sorry, Tom, there may be other possibilities/possible explanations, but nothing else comes to mind at the moment.

Amy