Student or Learner
Here is a sentence written from a Russian English teacher.
"So far I have run a number of live classes with up to 10 people at a time and am very impressed and excited by their potential."
Would you be kind enough to explain to me the twofold usage of the expression in bold?
On the one hand it is used in negative statement to describe a situation that has existed up to this point or up to the present point (up to now, as yet, til now, until now).
On the other hand it is used after a superlative (see the sentence above).
Thank you for your efforts.
It is more like a demonstrative adjective used as a comparative, which fits both cases. So far (this far in time).... or so far (as far) as I know...