'know of' is used when you have personal experience with wha. Therefore, saying did you know asks if you have previously known something Possible duplicate of know about vs
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Also what are the differences between “know”, “know about”, and “know of”
On english language learners, which is probably a better site for questions like this.
In (2), however, the object of know is not indicated, as you point out, so something must be provided. Alright, well, for example, like on saturdays, y’know, what i liked to do. Also explain the difference between the two, thanks. It's not just you that doesn't know
Now, according to owl.purdue.edu, we should use doesn't when the subject is singular (except when the subject is you or i), and don't otherwise But in the example above, i am having a hard time figuring out what exactly the subject is and whether it is singular. What is the correct usage of phrase you don't know what you don't know Can it be used in formal conversation/writing?
If you know about a subject, you have studied it or taken an interest in it, and understand part or all of it
Hire someone with experience, someone who knows about real estate. Is the first phrase supposed to mean i already know you or you already know me There isn't enough context in your quote to determine that If the latter, it would be me you already know
If the former, it's decidedly odd.
