When do we use the word (food) as a countable noun and when do we use it as uncountable ?

can I use the auxiliary verb " do"after never in inverted sentences for example "Never do I give up"

What is the difference between ( a few) and ( few) ?

What is the difference between other and another somebody and someone? Hope you understand the question

What is the difference between(a few/ few), and(a lot/lots)?

How and when do we use the word "notwithstanding"? If you don't mind, please support your explanation with some examples when answering

what is the difference between "on" and "upon"? when speaking and writing when do we use on or upon? they have the same meaning, but there is a difference inevitably. Native speakers absolutely know it.

can I say" when getting your leg broken and some injuries start to apear on your face, you.. etc? I mean, is the use of and correct? or I have to consider the parallel when using it ?