I believe that almost all Koreans have some level of confidence about grammar when reading English articles
But while listening, there is usually not enough time for interpretation. Perhaps the listening skill is a good indicator of his or her English level.
Consider the following sentence which is from the movie Rapunzel :
once upon a time, a single drop of sunlight fell from the heavens.
I can not understand this listen well while listening, as there are a lot of words that are subjective. So when I do not catch the subjective part, I usually loose track of the whole sentence.
Also, I did not catch the following sentence : It contains a lof of adjectives
Well, centuries passed and a hop-skip-and-a-boat ride away, there grew a kingdom.
I believe that foreigners' major difficulty in Korean is listening as well.
What kind of Korean sentences do you have a problem understanding while listening?
Add : When I listen to Korean TV programs, I try to analyze Korean sentences as I analyze English sentences while listening to English dialogue. Surprisingly, I can not. It is very difficult.