ONCEon one occasion in the pastRELATED WORDSat once 过去有一次IMMEDIATELYat once, at the same time 马上TIMEonce again/once more 同时AGAINsee alsoPAST1 on one occasion in the past 再一次once /wʌns/ [adverb] They had met once on holiday, so they knew each other slightly. 他们度假的时候见过一面，所以彼此有点认识。 She once called me a liar and I've never forgiven her. 她有一次说我是骗子，我一直没有原谅她。 I remember once it snowed on my birthday, and I was so excited. 记得有一次我生日那天正好下雪，我多么兴奋啊。one time /ˌwʌn ˌtaɪm/ [adverb]spokenonce 【口】有一次 I remember coming home from school one time and finding we'd been burgled. 我记得有一次放学回家发现家里被盗了。 One time we went out fishing on the lake at night. 有一次，我们夜里到湖上去钓鱼。on one occasion /ɒn ˈwʌn əˌkeɪʒən/ [adverb]use this to give an example of when something you are talking about happened, especially when it is a particularly interesting or extreme example 有一次〔尤用于谈到一件有趣或特别的事情〕 On one occasion, she rang his home and a strange woman answered. 有一次，她打电话到他家里，接电话的是一个陌生的女人。 She had some pretty frightening experiences. On one occasion her jeep was hijacked by a group of armed soldiers. 她有过几次可怕的经历。有一回，她的吉普车被一群武装士兵劫持了。at one stage /ət ˈwʌn ˌsteɪdʒ/ [adverb]at one time during a period of time, process, or event in the past 有一段时间 I dieted for many years, and at one stage I weighed only 71 kg. 我节食了好多年，有一段时间体重只有71公斤。 It was a terrible winter. At one stage all the roads to the village were blocked by snow. 那个冬天糟透了，有一段时间通往村里的所有道路都被大雪封锁了。 At one stage in the match, he was trailing by three games, but he managed to fight back. 比赛中有一段时间他落后三局，但他最终反败为胜。at one point /ət ˈwʌn ˌpɔɪnt/ [adverb]at one time during an activity or period of time in the past 〔过去某项活动或某段时间中〕有一刻 At one point in the interview, he seemed close to tears. 访问中有一刻他差点落下眼泪。 ‘You play the piano very well,’ I remember Mrs Saito remarking at one point. “你钢琴弹得非常好。”我记得斋藤夫人有一次这样说道。 I had several narrow escapes during the war, at one point just missing death when my plane was shot down. 战争中我几次死里逃生，有一次我的飞机被击落，我差点送命。one day /ˌwʌn ˈdeɪ/ [adverb]on a day in the past - use this especially when the exact day does not matter and you are telling the story of what happened 〔过去〕有一天〔尤指确切的日期不重要〕 I was sitting eating my breakfast one day when the telephone rang. 有一天我正坐着吃早餐，电话铃响了。 One day when we had nothing else to do, we went down to the river for a swim. 有一天我们没有其他事可做，就到河里去游泳。 He used to come and go, then one day he went away and never came back. 他过去总是去了又来，可后来有一天他走了就再也没回来过。