studying english

I have been studying English. While studying English, I have faced some difficulties.
When i interpret some paragraphs, sometimes i feel that those paragraphs lose their original nuance. But maybe this problem has happened to foreigners who learn Korean. One word has a few meanings. This aspect makes it hard for me to learn English. For instance, just for the word "take", it takes up 2 pages of a dictionary. This kind of difficulty occurs when prepositions and adverbs are combined/put together. When i saw that prepositions and adverbs are arranged near one another, like "goes so far as to ~", I feel confused. Also when a sentence is inverted, that structure becomes harder to understand. When on earth will  I come to understand sophisticated English and speak it naturally?

Timothy already corrected this well, but I thought I would go into more detail on some points ^_^

"I have been studying English." Is perfectly correct but short sentences sound a little unnatural some how.

For example if you say "I'm currently reading a book called (name). I really like it because it has lots of action" it sounds much better than "I read a book. It is called (name). I really like it. It has a lot of action." even though that is all correct it sounds unnatural.

So for your first line you could say something like
"Recently, I've been studying English, and while studying it, I have faced some difficulties"
 

When i interpret some paragraphes, sometimes i felt, those paragraphes lose their original nuance.
'felt' is past tense while 'lose' and 'interpret' are current tense, all of the verbs need to be either past or present e.g
Present: When i interpret some paragraphs, sometimes i feel that those paragraphes lose their original nuance.
Past: When i interpreted some paragraphs, sometimes i felt that those paragraphes lost their original nuance.
 

But maybe this problem has (also) happened to foreigners who learn Korean.
- Adding 'also' joins this sentence to the last sentence a little bit, and adds to the flow of the paragraph.
 

that structure becomes more hard to understand
more hard - harder

As a general rule, if a word has 1 or 2 syllables we add -er at the end, but if it has 3 syllables we say more e.g
Hard - harder
Soft - Softer
Pretty - Prettier
Happy - Happy
Beautiful - More Beautiful
Difficult - More difficult

There are some exceptions but most words follow this rule :)



Also, I think you're doing really great with English already! Everything else will come with time, keep up the good work ^_^