English translation: the presence or absence of an activity VS an ongoing activity that accompanies an event
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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
Korean term or phrase:
~ㄴ다 vs ~고 있다
English translation:
the presence or absence of an activity VS an ongoing activity that accompanies an event
Explanation: 1) Speaker's emphasis on the "fact" of raining.
2) Speaker's emphasis on the "state" of raining.
When it is raining for a while, the speaker may use the second register. Of course, he/she may use the first register, thinking about the "fact" of raining.
However:
When the rain just started, the speaker usually use the first register. Of course, the speaker can use the second register, but usually use the first register, thinking of the start(fact) of raining.
Thank you for the correction, but I was more concerned about the response. It came from a Korean. The person used neither the 오는~, nor the 오고 있~ construction.
When you say the "fact" of raining, do you mean the presence or absence of rain? When you say the "state" of raining, do you mean something that is present when something else takes place?
Yesterday, I performed an experiment. I knew it was raining outside, but was indoors and on my way out. So, I aksed, 비가 오는 다? The answer was 비 와요.
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Answers
20 mins confidence:
Nearly same, but nuance is somewhat different
Explanation: 1) Speaker's emphasis on the "fact" of raining.
2) Speaker's emphasis on the "state" of raining.
When it is raining for a while, the speaker may use the second register. Of course, he/she may use the first register, thinking about the "fact" of raining.
However:
When the rain just started, the speaker usually use the first register. Of course, the speaker can use the second register, but usually use the first register, thinking of the start(fact) of raining.
English2Korean United Kingdom Local time: 06:24 Native speaker of: Korean
The translation workplace 
