onKK [ˋɑn] /ˈɑn/介系詞1在…上、在…上面Someone left a wet umbrella on the kitchen table.有人把一把濕傘留在廚房桌子上。2在（某日）、於The results will be announced on Friday afternoon.結果將在星期五下午公布。3關於、有關She gave a short talk on renewable energy.她針對再生能源做了簡短的演講。4透過、在…上I heard the news on the radio this morning.我今天早上從廣播上聽到這個消息。5處於（某狀態）、在…中Half the staff are on leave this week.這星期有一半的員工在休假。顯示全部 15 個義項介系詞6屬於（團體）、任職於He has been on the committee for three years.他已經在委員會待了三年。7服用、使用（藥物）She is on painkillers until the swelling goes down.在腫消之前她都要服用止痛藥。8靠、以…為動力These old buses still run on diesel.這些舊公車仍然靠柴油行駛。9臨、位於Their apartment is on a quiet side street.他們的公寓位在一條安靜的巷子裡。10由…付帳、請（客）口語Order whatever you like; dinner is on me.想吃什麼就點，這頓晚餐我請。副詞1繼續、持續、下去He talked on for another twenty minutes without pausing.他又不停地繼續講了二十分鐘。2穿上、戴上Put your jacket on before you go outside.出門前先把外套穿上。3向前、往前We walked on until the path disappeared.我們一直往前走，直到小路消失。形容詞1開著的、運轉中的The heater has been on all night.暖氣開了一整晚。2照計畫進行、舉行Is the meeting still on, or did they cancel it?會議還是照原定進行嗎，還是取消了？