'know of' is used when you have personal experience with wha. Possibly, i do know that can in fact only be used, when, you are answering the question of whether or not you know the issue at hand (or your knowledge has been called in to question, and you are answering that challenge) Why do you think that he doesn't know him from his schooldays means that he does know him It would only have that sense if you added something like in fact, he first met him at university. In (2), however, the object of know is not indicated, as you point out, so something must be provided. 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.
What is the correct usage of phrase you don't know what you don't know Can it be used in formal conversation/writing? Thus, as far as i know, bob is happy over bob is happy, so far as i know They are equivalent in meaning therefore, but choice of one over another betrays, for me, certain prejudices I also sense that so far as sounds slightly antiquated and is losing ground. In this instance, i believe he did know nothing at all about those sinister schemes
Alright, well, for example, like on saturdays, y’know, what i liked to do. 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.
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