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(5) 過去分詞: been: I have been ill for a week. / He had been studying in London. / Dinner (having been) finished, they left the room. 晩餐が済む🔗🔉

(5) 過去分詞: been: I have been ill for a week. / He had been studying in London. / Dinner (having been) finished, they left the room. 晩餐が済むと, 彼らは部屋を去った.

研究社新英和大辞典 ページ 173441 での5having been単語。