To me it seems like 'know about' is used in every situation and the use of 'know of' is mostly limited to 'not that I know of' expression. Short google search seems to support my point of …

Feb 23, 2015 · In dialog, you would usually say "I know that" as a simple statement. "I know" would be accompanied either by a gesture such as holding up your hand with the palm toward …

Oct 18, 2016 · I think 'did you know' is used to represent past facts. Eg:'Did you know that some dinosaurs’ tails were over 45 feet long?',whereas "Do you know' is used to represent …

Sep 25, 2010 · "I know that it is true" becomes "I know it is true." I simply omit the word "that" and it still works. "That that is true" becomes "That which is true" or simply, "The truth." I do this not …

Jan 5, 2012 · I am a non-native speaker of English. When communicating with a professor, would it be better to use could you kindly send me the document or could you please send me the …

The ones who are included know better." because "ones" is plural, which suggests more than one individuals. If you think that you should use "know" then you have to start the given sentence …

Oct 14, 2011 · We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns – the ones we don't know we …

Apr 18, 2012 · Neither of these accurately reflect what the OP wants. 'Fronting' is more likely to mean the person is is pretending to know more than they do. Taking the piss - yes somebody …

Although "who knows" is almost as an expression for giving sense however, expressions can be statements, orders, and questions, so does the expression: "who knows" need a question mark?

May 9, 2012 · I might say the first sentence if I know what time it is but do not know where we are (as is generally the case when I'm on a train). The second is more of a complaint about how …