| 单词 | once |
| 释义 | once (wʌns ) 1. adverb [ADVERB with verb] A2 If something happens once, it happens one time only. I met Wilma once, briefly. Since that evening I haven't once slept through the night. Mary had only been to Manchester once before. Once is also a pronoun. 'Have they been to visit you yet?'—'Just the once, yeah.' Listen to us, if only this once. 2. adverb A2 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. Lung cells die and are replaced about once a week. We arranged a special social event once a year to which we invited our major customers. 3. adverb [ADV every n, ADV every num n] A2 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. The patient was seen for follow-up visits once every three months. My daughter comes to visit me once every fortnight. 4. adverb [ADVERB with verb, ADV with be] B1 If something was once true, it was true at some time in the past, but is no longer true. The culture minister once ran a theatre. I lived there once myself, before I got married. The house where she lives was once the village post office. My memory isn't as good as it once was. ...an undulating park, once lovely but now ruined by new buildings. Synonyms: at one time, in the past, previously, formerly 5. adverb [ADVERB with verb] B1 If someone once did something, they did it at some time in the past. I once went camping at Lake Darling with a friend. We once walked across London at two in the morning. Diana had taken that path once. 6. conjunction B2 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. Once customers come to rely on these systems they almost never take their business elsewhere. Once inside her apartment she felt an urge to brush her teeth. Synonyms: as soon as, when, after, the moment 7. all at once phrase If something happens all at once, it happens suddenly, often when you are not expecting it to happen. I feel terribly sleepy all at once. All at once there was someone knocking on the door. Synonyms: suddenly, unexpectedly, abruptly, all of a sudden 8. at once phrase B1 If you do something at once, you do it immediately. I have to go, I really must, at once. Remove from the heat, add the parsley, toss and serve at once. The audience at once greeted him warmly. Synonyms: immediately, now, right now, straight away 9. at once/all at once phrase B2 If a number of different things happen at once or all at once, they all happen at the same time. You can't be doing two things at once. No bank could ever pay off its creditors if they all demanded their money at once. 10. for once phrase B2 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. [emphasis] For once, dad is not complaining. His smile, for once, was genuine. 11. once again phrase B1 If something happens once again or once more, it happens again. Amy picked up the hairbrush and smoothed her hair once more. Once again an official inquiry has spoken of weak management and ill-trained workers. 12. once and for all phrase If something happens once and for all, it happens completely or finally. [emphasis] We have to resolve this matter once and for all. If we act fast, we can once and for all prevent wild animals in Britain from suffering terrible cruelty. Synonyms: for the last time, finally, completely, for good 13. once in a while phrase B2 If something happens once in a while, it happens sometimes, but not very often. Earrings need to be taken out and cleaned once in a while. Once in a while she phoned him. Synonyms: occasionally, sometimes, at times, from time to time 14. once or twice phrase If you have done something once or twice, you have done it a few times, but not very often. I popped my head round the door once or twice. Once or twice she had caught a flash of interest in William's eyes. She gazed up at him, blinking once or twice, apparently surprised at his cleverness. 15. once upon a time phrase B2 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. 'Once upon a time,' he began, 'there was a man who had everything.' Once upon a time, asking a woman if she has a job was quite a straightforward question. 16. once in a blue moon phrase If you say that something happens once in a blue moon, you are emphasizing that it does not happen very often at all. [emphasis] Once in a blue moon you get some problems. Collocations: once plentiful To add to the region's woes, the fish harvests, once plentiful and prosperous, declined last year to no more than a feeble trickle. Times, Sunday Times The name comes from wild rye which was once plentiful in the area. Retrieved from Wikipedia CC BY-SA 3.0 Aviation gasoline was once plentiful and cheap, favoring the simple, but fuel-hungry supercharger. Retrieved from Wikipedia CC BY-SA 3.0 Today many of these woods that were once plentiful are only available in large quantities through reclamation. Retrieved from Wikipedia CC BY-SA 3.0 As parasite infections increased, the once plentiful clones dwindled dramatically in number. Retrieved from Wikipedia CC BY-SA 3.0 An end to a war that has blighted a country's once prosperous future cannot come too soon. Times, Sunday Times Critics blame the authoritarian leftwing leader for bringing the once prosperous nation near to ruin through a misguided economic policies and rampant corruption. Times, Sunday Times Nature has reduced the once prosperous communal farm into a swampy, puddled mush. Retrieved from Wikipedia CC BY-SA 3.0 Beginning in the early 1970s municipalities began to seek solutions to manage decline or spur revitalization in once prosperous city neighborhoods. Retrieved from Wikipedia CC BY-SA 3.0 He eventually turned the once prosperous country into a dark and barren wasteland. Retrieved from Wikipedia CC BY-SA 3.0 At the crossroads at the entrance to the once sleepy and remote town, we were greeted by scenes of complete hysteria. The Sun Since he joined in 1997 he has been instrumental in transforming the once sleepy luggage label into a hugely profitable and trend-setting, global brand. Times, Sunday Times Instead, it has added entrepreneurial energy to a once sleepy city. Outlook India Analysts said that the deal was the latest sign of consolidation in the once sleepy exchanges industry, which has been revolutionised as most stock and commodities markets have gone public. Times, Sunday Times Major projects including large housing subdivisions, condos, and retail establishments have altered the face of the once sleepy mountain community. Retrieved from Wikipedia CC BY-SA 3.0 Indeed, a little research suggests that we fortysomethings are the last of a once thriving group who are prepared to get wet communally. Times, Sunday Times Many towns have become social and cultural deserts yet were once thriving community hubs. Times, Sunday Times Even when gas and electricity are reconnected, their once thriving towns have few shops, schools or social services. Times, Sunday Times The sea bed, once thriving with marine life, has been scraped clean by fine mesh nets. Times, Sunday Times She predicted that 'a once thriving city will turn into a hollowed-out museum'. Times, Sunday Times They are frozen in time, like this once vibrant club itself. ST In his own devastated city, only 40,000 remain from a once vibrant community of 160,000. Times, Sunday Times The city's once vibrant street life, which survived for most of the four-year conflict, has been wiped out. Times, Sunday Times But down the years the big workplaces closed and this once vibrant town shrivelled economically. Times, Sunday Times Though there were still buildings and radar towers present only three commissionaires remained to guard the once vibrant base. Retrieved from Wikipedia CC BY-SA 3.0 Translations: Chinese: 一次 Japanese: 一度 |
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