How To Know If Pool Is Leaking

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. Possible duplicate of know about vs. Also what are the differences between know, know about, and know of?

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 For me, know implies knowledge of details or individual pieces, while am aware of implies a knowledge only of a whole. Using your example, knowing my rights means that i know i have the right to remain.