聞くの

are you asking?

→ 聞く
phrase Common #2,205
are you asking? The final の gives the question a conversational, often explanatory tone. With なぜ or なんで, the phrase means “why are you asking?”
JA: そんなこと聞くの?
EN: Are you asking that?

なんで聞くの?

Why do you ask?

それ先にこっちが聞いたのに何で俺に聞くの?

I asked you that first, so why are you asking me?

— ブエノスアイレス (1997)

ソファに座って“今の気分は?”と聞くの?

Do you sit on the couch and ask, “How are you feeling right now?”

— ビッグ・シック ぼくたちの大いなる目ざめ (2017)

どうして私にトムのこと聞くの?

Why are you asking me about Tom?

なぜ聞くの?

Why do you ask?

— デッド・ドント・ダイ (2019)

なぜ彼に聞くの?

Why are you asking him?

— アイム・スティル・ヒア (2024)

なんでそんなこと聞くの?

Why do you ask that?

何度聞くの?

How many times are you going to ask?

— ビッグ・シック ぼくたちの大いなる目ざめ (2017)

「僕のこと嫌い?」「ううん」「じゃあ好き?」「なんで聞くの?」

“Do you hate me?” “No.” “Then do you like me?” “Why do you ask?”