'know of' is used when you have personal experience with wha. In (2), however, the object of know is not indicated, as you point out, so something must be provided. Also explain the difference between the two, thanks. 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. 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. Alright, well, for example, like on saturdays, y’know, what i liked to do. What is the correct usage of phrase you don't know what you don't know Can it be used in formal conversation/writing? Can anyone give use cases and examples for happen to know came to know got to know came across i always gets confused in their uses.
And explain why the others are wrong No one knows the answer No one know the answer There is nobody anwering the qustion Therefore, saying did you know asks if you have previously known something Do is the present tense, so saying do you know would ask if you currently know.
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