This is the 13427th most frequent Korean word.
떨어지니
"떨어지니" means "because [it] falls" or "as [it] falls."
In this sentence, '떨어지니' is used to describe the action of falling leaf driven by the wind, indicating a sequential or causative action where the falling evokes a feeling of loneliness.
나뭇잎이 바람에 떨어지니 쓸쓸한 느낌이 든다.
As the leaves fall in the wind, it feels lonely.
Here, '떨어지니' refers to the decrease in scores, suggesting a consequence that requires action, like revising the study plan.
점수가 떨어지니 공부 계획을 다시 세워야겠다.
Since the score dropped, I need to plan my study schedule again.
In this sentence, '떨어지니' indicates a shortage of water that leads to the decision or necessity to purchase more water.