Not That I Know Of
Alexander Torres 
Not That I Know Of
Don't I know or don't know anything? 3
Can anyone tell the difference between the two?
Not that I know it is used when the name of the subject in question is unique. Do you have a doctor on duty? > Not that I know.
As far as I know, none of these options mean that the noun is in the plural. Is the doctor on duty? > I don't know anything.
Not That I Know Of
Not That I Know Of
It's not that I know its use is related to answering questions or relating to facts. This is for SW, the speaker knows nothing. Usually a name is used in answers to questions.
Do you have a cat
Not that i know
No one I know is even used to answering questions or talking about facts. This time it is used as an answer to a question about the plural noun.
Does your friend have a cat?
No one i know
