疑問詞「who」

【解説】

肯定文で主語,補語,目的語で使われる名詞(人)が「誰」であるかをたずねる疑問文を作るときに使われる疑問詞が「who」です。

主語(He)をたずねるHe plays soccer. → Who plays soccer?
補語(Taro)をたずねるHe is Taro. → He is who. → Is he who? → Who is he?
目的語(Taro)をたずねるShe likes Taro. → She likes who. → Does she like who? → Who does she like?