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. Elite Daily: Here's Everything You Need To Know About Alana On 'Love Island' Learn more about YouTube YouTube help videos Browse our video library for helpful tips, feature overviews, and step-by-step tutorials.

Understanding the Context

YouTube Known Issues Get information on reported technical issues or scheduled maintenance. More help If you're using a work or school account and couldn't install classic Outlook following the steps above, contact the IT admin in your organization for assistance. Recently one of my friends told me that there is distinct difference between 'know of something' and 'know about something' expressions. 'know of' is used when you have personal experience with wha...

Key Insights

"Know about" vs. "know of" - English Language & Usage Stack Exchange Examples: I know (about) this difficulty/problem. I know (about) Engineering. In the first sentence, it seems to me that "to know" expresses that the speaker experienced the problem/difficulty before while "to know about" only expresses that the speaker has heard or read about it. to know vs to know about - English Language & Usage Stack Exchange Earth is the only planet we know of where life exists.

Final Thoughts

This sentence is from the commentary of Planet Earth. Why it is know of in this sentence? Can it be know about? What’s the difference bet... “know of” vs “know about” - English Language & Usage Stack Exchange