Question

once adv.一次；曾经conj.一旦n.一次adj.曾经的 (1) 有一两次她回头看看我。(2) 整整一晚上,她都没有跟他讲过一次话。(3) 我大约两星期见他们一次。(4) 我们曾经住在伦敦。

Accepted Answer

英 [wʌns] 美 [wʌns] (1) Once or twice she looked over her shoulder at me.(2) She had not once spoken to him all the evening.(3) I see them about once a fortnight.(4) Once we lived in London. 1[ADV 副词]一次；一回 If something happens once, it happens one time only.   [ADV with v]  [the/this PRON]I met Wilma once, briefly...我曾经和威尔玛有过短短的一面之缘。Since that evening I haven't once slept through the night...从那天晚上之后，我没有睡过一次安稳觉。Mary had only been to Manchester once before.玛丽以前只去过一次曼彻斯特。Once is also a pronoun.'Have they been to visit you yet?' — 'Just the once, yeah.'...“他们来看过你吗？”——“来过，就一次。”Listen to us, if only this once.听我们的吧，哪怕就这么一次。2[ADV 副词]（与后接day, week, month等的a连用）（每…）一次，（每…）一回 You use once with 'a' and words like 'day', 'week', and 'month' to indicate that something happens regularly, one time in each day, week, or month.   [ADV a n]Lung cells die and are replaced about once a week...肺细胞约每周新老更替一次。We arranged a special social event once a year to which we invited our major customers.我们每年举办一次专门的社交活动，邀请重要客户出席。3[ADV 副词]（与后接day, week, year等的every连用）（每隔…）一次，（每隔…）一回 You use once with 'every' and words like 'day', 'week', and 'year' to indicate that something happens a specified number of times and on a regular basis.   [ADV every n]The patient was seen for follow-up visits once every three months...这位病人每三个月接受一次随访就诊。My daughter comes to visit me once every fortnight.我女儿每两周来看我一次。4[ADV 副词]曾经，一度（状况如此） If something was once true, it was true at some time in the past, but is no longer true.   [ADV with v]The culture minister once ran a theatre...这位文化部长曾经经营过一家剧院。I lived there once myself, before I got married...我结婚前曾独自在那儿住过。The house where she lives was once the village post office...她现在住的房子曾经是村里的邮局。My memory isn't as good as it once was.我的记性赶不上从前了。...an undulating park, once lovely but now ruined by new buildings.曾经景色秀美、而今被新建筑糟蹋得面目全非的高低错落的庭园5[ADV 副词]曾经（做过某事） If someone once did something, they did it at some time in the past.   [ADV with v]I once went camping at Lake Darling with a friend...我曾和一位朋友在达令湖畔露营。We once walked across London at two in the morning...我们曾在凌晨两点步行穿过伦敦。Diana had taken that path once.黛安娜曾走过那条路。6[CONJ-SUBORD 连词]一旦…（就…)； 一…（就…） If something happens once another thing has happened, it happens immediately afterwards. The decision had taken about 10 seconds once he'd read a market research study...在他看过一份市场调研报告后大概10秒钟就作出了决定。Once customers come to rely on these systems they almost never take their business elsewhere...顾客一旦依赖上这些系统，几乎就不会光顾其他商家。Once inside her apartment she felt an urge to brush her teeth.一回到自己的公寓，她就有一种想要刷牙的冲动。7[PHRASE 短语]突然；忽然 If something happens all at once, it happens suddenly, often when you are not expecting it to happen.   [PHR with cl]I feel terribly sleepy all at once...我突然觉得特别困。All at once there was someone knocking on the door.忽然有人敲门。8[PHRASE 短语]立即；马上 If you do something at once, you do it immediately.   [PHR with v]I have to go, I really must, at once...我得走了，我真的必须马上就走。Remove from the heat, add the parsley, toss and serve at once...端离炉子，加上欧芹，颠起翻面后就立刻上桌。The audience at once greeted him warmly.观众立即对他作出了热情的反应。9[PHRASE 短语]同时；一起 If a number of different things happen at once or all at once, they all happen at the same time.   [PHR after v]You can't be doing two things at once...不能一心二用。No bank could ever pay off its creditors if they all demanded their money at once...如果所有的储户同时要求提取存款，没有哪家银行能办得到。She seems at once feminine and able to cope in a man's world.她看起来既有女人味，又能在男人的世界里游刃有余。10[PHRASE 短语]就此一次；破例一次 For once is used to emphasize that something happens on this particular occasion, especially if it has never happened before, and may never happen again.   [PHR with cl]  [emphasis]For once, dad is not complaining...爸爸这次破天荒地没有抱怨。His smile, for once, was genuine.只有这一次，他真诚地笑了。11[PHRASE 短语]又一次；再次 If something happens once again or once more, it happens again.   [PHR with v]Amy picked up the hairbrush and smoothed her hair once more...埃米拿起发梳，再次将头发梳理整齐。Once again an official inquiry has spoken of weak management and ill-trained workers.官方调查又一次提到了管理不力与工人缺乏训练的问题。12[PHRASE 短语]彻底地；一劳永逸地 If something happens once and for all, it happens completely or finally.   [PHR with v]  [emphasis]We have to resolve this matter once and for all...我们必须彻底解决这一问题。If we act fast, we can once and for all prevent wild animals in Britain from suffering terrible cruelty.如果我们迅速采取行动，就可以一劳永逸地使英国的野生动物免受残忍的虐待。13[PHRASE 短语]偶尔；间或 If something happens once in a while, it happens sometimes, but not very often.   [PHR with cl]Earrings need to be taken out and cleaned once in a while.耳环要偶尔取出来清洗一下。Once in a while she phoned him.她间或会给他打个电话。14[PHRASE 短语]一两次；几次 If you have done something once or twice, you have done it a few times, but not very often.   [PHR with cl]I popped my head round the door once or twice...我有几次头撞到了门上。Once or twice she had caught a flash of interest in William's eyes...有那么一两次，她发现威廉的眼睛里流露出一丝感兴趣的神色。She gazed up at him, blinking once or twice, apparently surprised at his cleverness.她抬头注视着他，偶尔才眨一下眼睛，显然对他的聪明才智颇为惊讶。15[PHRASE 短语]（常用于儿童故事的开头）从前，很久以前 Once upon a time is used to indicate that something happened or existed a long time ago or in an imaginary world. It is often used at the beginning of children's stories.   [PHR with cl]'Once upon a time,' he began, 'there was a man who had everything.'...“很久很久以前，”他开始说道，“有这么一个人，他应有尽有。”Once upon a time, asking a woman if she has a job was quite a straightforward question.从前，问一位女性是否有工作是个相当简单直接的问题。16  once in a blue moon→see: moon；

英语单词	once
英美音标	英 [wʌns] 美 [wʌns]
中文释义	adv.一次；曾经 conj.一旦 n.一次 adj.曾经的
英语例句	(1) Once or twice she looked over her shoulder at me. (2) She had not once spoken to him all the evening. (3) I see them about once a fortnight. (4) Once we lived in London.
中文例句	(1) 有一两次她回头看看我。 (2) 整整一晚上,她都没有跟他讲过一次话。 (3) 我大约两星期见他们一次。 (4) 我们曾经住在伦敦。
柯林斯解释	1 [ADV 副词]一次；一回 If something happens once, it happens one time only. [ADV with v] [the/this PRON] I met Wilma once, briefly... 我曾经和威尔玛有过短短的一面之缘。 Since that evening I haven't once slept through the night... 从那天晚上之后，我没有睡过一次安稳觉。 Mary had only been to Manchester once before. 玛丽以前只去过一次曼彻斯特。 Once is also a pronoun. 'Have they been to visit you yet?' — 'Just the once, yeah.'... “他们来看过你吗？”——“来过，就一次。” Listen to us, if only this once. 听我们的吧，哪怕就这么一次。 2 [ADV 副词]（与后接day, week, month等的a连用）（每…）一次，（每…）一回 You use once with 'a' and words like 'day', 'week', and 'month' to indicate that something happens regularly, one time in each day, week, or month. [ADV a n] Lung cells die and are replaced about once a week... 肺细胞约每周新老更替一次。 We arranged a special social event once a year to which we invited our major customers. 我们每年举办一次专门的社交活动，邀请重要客户出席。 3 [ADV 副词]（与后接day, week, year等的every连用）（每隔…）一次，（每隔…）一回 You use once with 'every' and words like 'day', 'week', and 'year' to indicate that something happens a specified number of times and on a regular basis. [ADV every n] The patient was seen for follow-up visits once every three months... 这位病人每三个月接受一次随访就诊。 My daughter comes to visit me once every fortnight. 我女儿每两周来看我一次。 4 [ADV 副词]曾经，一度（状况如此） If something was once true, it was true at some time in the past, but is no longer true. [ADV with v] The culture minister once ran a theatre... 这位文化部长曾经经营过一家剧院。 I lived there once myself, before I got married... 我结婚前曾独自在那儿住过。 The house where she lives was once the village post office... 她现在住的房子曾经是村里的邮局。 My memory isn't as good as it once was. 我的记性赶不上从前了。 ...an undulating park, once lovely but now ruined by new buildings. 曾经景色秀美、而今被新建筑糟蹋得面目全非的高低错落的庭园 5 [ADV 副词]曾经（做过某事） If someone once did something, they did it at some time in the past. [ADV with v] I once went camping at Lake Darling with a friend... 我曾和一位朋友在达令湖畔露营。 We once walked across London at two in the morning... 我们曾在凌晨两点步行穿过伦敦。 Diana had taken that path once. 黛安娜曾走过那条路。 6 [CONJ-SUBORD 连词]一旦…（就…)；一…（就…） If something happens once another thing has happened, it happens immediately afterwards. The decision had taken about 10 seconds once he'd read a market research study... 在他看过一份市场调研报告后大概10秒钟就作出了决定。 Once customers come to rely on these systems they almost never take their business elsewhere... 顾客一旦依赖上这些系统，几乎就不会光顾其他商家。 Once inside her apartment she felt an urge to brush her teeth. 一回到自己的公寓，她就有一种想要刷牙的冲动。 7 [PHRASE 短语]突然；忽然 If something happens all at once, it happens suddenly, often when you are not expecting it to happen. [PHR with cl] I feel terribly sleepy all at once... 我突然觉得特别困。 All at once there was someone knocking on the door. 忽然有人敲门。 8 [PHRASE 短语]立即；马上 If you do something at once, you do it immediately. [PHR with v] I have to go, I really must, at once... 我得走了，我真的必须马上就走。 Remove from the heat, add the parsley, toss and serve at once... 端离炉子，加上欧芹，颠起翻面后就立刻上桌。 The audience at once greeted him warmly. 观众立即对他作出了热情的反应。 9 [PHRASE 短语]同时；一起 If a number of different things happen at once or all at once, they all happen at the same time. [PHR after v] You can't be doing two things at once... 不能一心二用。 No bank could ever pay off its creditors if they all demanded their money at once... 如果所有的储户同时要求提取存款，没有哪家银行能办得到。 She seems at once feminine and able to cope in a man's world. 她看起来既有女人味，又能在男人的世界里游刃有余。 10 [PHRASE 短语]就此一次；破例一次 For once is used to emphasize that something happens on this particular occasion, especially if it has never happened before, and may never happen again. [PHR with cl] [emphasis] For once, dad is not complaining... 爸爸这次破天荒地没有抱怨。 His smile, for once, was genuine. 只有这一次，他真诚地笑了。 11 [PHRASE 短语]又一次；再次 If something happens once again or once more, it happens again. [PHR with v] Amy picked up the hairbrush and smoothed her hair once more... 埃米拿起发梳，再次将头发梳理整齐。 Once again an official inquiry has spoken of weak management and ill-trained workers. 官方调查又一次提到了管理不力与工人缺乏训练的问题。 12 [PHRASE 短语]彻底地；一劳永逸地 If something happens once and for all, it happens completely or finally. [PHR with v] [emphasis] We have to resolve this matter once and for all... 我们必须彻底解决这一问题。 If we act fast, we can once and for all prevent wild animals in Britain from suffering terrible cruelty. 如果我们迅速采取行动，就可以一劳永逸地使英国的野生动物免受残忍的虐待。 13 [PHRASE 短语]偶尔；间或 If something happens once in a while, it happens sometimes, but not very often. [PHR with cl] Earrings need to be taken out and cleaned once in a while. 耳环要偶尔取出来清洗一下。 Once in a while she phoned him. 她间或会给他打个电话。 14 [PHRASE 短语]一两次；几次 If you have done something once or twice, you have done it a few times, but not very often. [PHR with cl] I popped my head round the door once or twice... 我有几次头撞到了门上。 Once or twice she had caught a flash of interest in William's eyes... 有那么一两次，她发现威廉的眼睛里流露出一丝感兴趣的神色。 She gazed up at him, blinking once or twice, apparently surprised at his cleverness. 她抬头注视着他，偶尔才眨一下眼睛，显然对他的聪明才智颇为惊讶。 15 [PHRASE 短语]（常用于儿童故事的开头）从前，很久以前 Once upon a time is used to indicate that something happened or existed a long time ago or in an imaginary world. It is often used at the beginning of children's stories. [PHR with cl] 'Once upon a time,' he began, 'there was a man who had everything.'... “很久很久以前，”他开始说道，“有这么一个人，他应有尽有。” Once upon a time, asking a woman if she has a job was quite a straightforward question. 从前，问一位女性是否有工作是个相当简单直接的问题。 16 once in a blue moon→see: moon ；

I Phrase 短语 [Phr V Time Adv 副词