This is the 13422nd most frequent Korean word.
떨리는지
"Whether (someone is) trembling/shaking."
In this sentence, '떨리는지' (how nervous/shaky) is used to describe a person's emotional reaction in anticipation of an event, emphasizing the state of being nervous or tense.
그는 발표를 앞두고 얼마나 떨리는지 보여줬어요.
He showed how nervous he was before his presentation.
Here, '떨리는지' (if nervous/shaky) is used in the sense of questioning or confirming one's emotional response to a situation.
나는 첫 데이트에 떨리는지 확인해야 했어요.
I had to check if I was nervous about my first date.
'떨리는지' (whether shaky/nervous) in this context reflects the person's effort to conceal their true emotional state, observing someone's reaction or inner feelings.