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介词（表示方向）向; （表示对象）对; （表示位置）在…上; （表示时间）在…之时
副词（放，穿，连接）上; 向前，（继续）下去
形容词活动着的情况，状态; 使用着的; 发生着的; 计划中的
on
on的近义词
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副词
1. They talked on until midnight.
他们一直谈到深夜。
形容词
1. What''s on for tonight at the cinema?
今晚电影院上映什么片子？
介词
1. He is on the school volleyball team.
他是校排球队队员。
2. All the expenses fall on me.
全部费用由我支付。
3. I''ll meet you on / at the corner of Smith Street and Main Road.
我将在史密斯大街和湎洇路的十字路口与你会面。
交通
A：Let’s put on (some music/ the news/ a traffic report).
我们放点（音乐/新闻/交通报道）来听。
B：O.K.
好的。
电视节目
打折
1. (打开)：然后被关闭同样保持该状态动作检查 SPF PS 释放电磁铁 (CLH) 被打开并保持该状态500ms,然后被关闭同样保持该状态02 阻力辊电磁铁动作检查 在子代码输入状态按下[ 开始] 键后,阻力电磁铁 (RRS) 打开 (ON) 500ms,然后再关闭07 机器状态检查 (CPM) 执行此项模拟时,
2. on：opening nc; 开放式数控系统
3. on：oetane number; 辛烷值
4. on的翻译
4. on：open-nc; 开放式数控
5. on：operated normally; 运转正常
1. （表示支承）在…上
If someone or something is on a surface or object, the surface or object is immediately below them and is supporting their weight.
e.g. He is sitting beside her on the sofa...
他挨着她坐在沙发上。
e.g. On top of the cupboards are vast straw baskets which Pat uses for dried flower arrangements...
橱柜顶上摆着帕特用来插干花的大草篮。
2. （表示粘贴或附着）在…上
If something is on a surface or object, it is stuck to it or attached to it.
e.g. I admired the peeling paint on the ceiling...
我“观赏”着天花板上正在剥落的油漆。
e.g. The clock on the wall showed one minute to twelve...
墙上的钟指向11点59分。
3. （放、扔或掉）在…上面
If you put, throw, or drop something on a surface, you move it or drop it so that it is then supported by the surface.
e.g. He got his winter jacket from the closet and dropped it on the sofa...
他从衣橱里取出冬天穿的夹克，把它扔到沙发上。
e.g. He threw a folded dollar on the counter.
他将折起的1美元钞票扔到柜台上。
4. （身体重量）由（某部位）支撑
You use on to say what part of your body is supporting your weight.
e.g. He continued to lie on his back and look at clouds...
他仍旧仰卧着，望着天上的云彩。
e.g. He raised himself on his elbows, squinting into the sun...
他用胳膊肘支起身子，眯着眼睛看了看太阳。
5. （表示接触到身体某部位）在…上
You use on to say that someone or something touches a part of a person''s body.
e.g. He leaned down and kissed her lightly on the mouth...
他俯下身去，在她嘴唇上轻轻一吻。
e.g. His jaw was broken after he was hit on the head.
他的头部受重击之后下颌骨折了。
6. （某种表情）在（脸）上
If someone has a particular expression on their face, their face has that expression.
e.g. The maid looked at him, a nervous smile on her face...
女服务员看着他，脸上带着一丝局促不安的微笑。
e.g. She looked at him with a hurt expression on her face.
她望着他，脸上流露出受伤的表情。
7. （穿或戴）上，在身上
When you put a piece of clothing on, you place it over part of your body in order to wear it. If you have it on, you are wearing it.
e.g. He put his coat on while she opened the front door...
她打开前门时，他穿上了大衣。
e.g. I had a hat on.
我戴了顶帽子。
8. 带在…身上
You can say that you have something on you if you are carrying it in your pocket or in a bag.
e.g. I didn''t have any money on me...
我身上一分钱也没有。
e.g. I have those numbers, but not on me at the moment, they''re at home.
我有这些号码，但眼下没带在身上，搁在家里了。
9. （视线）落在…身上
If someone''s eyes are on you, they are looking or staring at you.
e.g. Everyone''s eyes were fixed on him...
每个人都盯着他看。
e.g. It''s as if all eyes are focused on me...
好像所有的目光都聚集在我身上似的。
10. （碰）上…（而受伤）
If you hurt yourself on something, you accidentally hit a part of your body against it and that thing causes damage to you.
e.g. Mr Pendle hit his head on a wall as he fell...
彭德尔先生摔倒时头磕到了墙上。
e.g. One day when my wife was doing the dishes she cut her hand on a broken glass.
一天，我妻子洗碗碟时，被一只破玻璃杯割破了手。
11. 在（某）地
If you are on an area of land, you are there.
on的近义词
e.g. He was able to spend only a few days at a time on the island...
他每次去岛上都只能呆几天。
e.g. You lived on the farm until you came back to America?
你回美国之前一直生活在农场吗？
12. 是（道路、海岸等）的一部分；在…边上
If something is situated on a place such as a road or coast, it forms part of it or is by the side of it.
e.g. Bergdorf Goodman has opened a men''s store on Fifth Avenue...
波道夫·古德曼在第五大道上开了一家男装店。
e.g. The hotel is on the coast...
这家饭店在海边。
13. 上，乘（公共汽车、火车或飞机）
If you get on a bus, train, or plane, you go into it in order to travel somewhere. If you are on it, you are travelling in it.
e.g. We waited till twelve and we finally got on the plane...
我们一直等到12点才终于上了飞机。
e.g. I never go on the bus into the town...
我从不坐公共汽车去城里。
14. （写或印刷）在…上
If there is something on a piece of paper, it has been written or printed there.
e.g. The writing on the back of the card was cramped but scrupulously neat...
这张卡片的背面写满了密密麻麻但却十分工整的字。
e.g. The numbers she put on the chart were 98.4, 64, and 105...
她在图表上写的数字是98.4，64和105。
15. 在（名单）上；包括在…内
If something is on a list, it is included in it.
e.g. I''ve seen your name on the list of deportees...
我看见你的名字在被驱逐出境者名单之列。
e.g. The Queen now doesn''t even appear on the list of the 40 richest people in Britain.
如今女王甚至连英国首富榜的前40名都挤不进去。
16. （书、讨论或观点）关于，涉及
Books, discussions, or ideas on a particular subject are concerned with that subject.
on
e.g. The longest chapter in almost any book on baby care is on feeding...
几乎所有关于婴儿护理的书籍中内容最多的一章都是喂养。
e.g. They offer a free counselling service which can offer help and advice on legal matters...
他们提供免费咨询服务，给予法律问题的援助和建议。
17. 以，凭，靠（某一方法、原则或系统）
You use on to introduce the method, principle, or system which is used to do something.
e.g. ...a television that we bought on credit two months ago.
我们两个月前赊购的电视机
e.g. ...a levelling system which acts on the same principle as a spirit level...
工作原理与气泡水准仪相同的水准测量系统
18. 通过，借助于（某一器械或机器）
If something is done on an instrument or a machine, it is done using that instrument or machine.
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e.g. ...songs that I could just sit down and play on the piano...
我坐下来就可以在钢琴上弹出的歌曲
e.g. I could do all my work on the computer...
我所有的工作都能在计算机上完成。
19. 以…方式（储存信息）
If information is, for example, on tape or on computer, that is the way that it is stored.
on
e.g. ''I thought it was a load of rubbish.'' — ''Right we''ve got that on tape.''...
“我觉得那是一派胡言。”——“没错，我们已经把它录在磁带上了。”
e.g. Descriptions of the pieces have been logged on computer by the Art Loss Register...
艺术品失窃登记处已经将这些艺术品的描述信息输入到计算机里。
20. 在（广播或电视）上播出
If something is being broadcast, you can say that it is on the radio or television.
e.g. Every sporting event on television and satellite over the next seven days is listed...
未来7天通过电视和卫星转播的每一项体育赛事都列在节目预告单上。
e.g. Here, listen, they''re talking about it on Radio-Paris right now.
嘿，听，巴黎电台正在谈论这事呢。
21. 正在发生的
When an activity is taking place, you can say that it is on .
e.g. There''s a marvellous match on at Wimbledon at the moment...
此刻在温布尔登正进行着一场精彩的比赛。
e.g. Every year they put a play on at Saint Holy Cross Church...
他们每年在圣十字教堂上演一出剧目。
22. （表示某人忙碌程度）忙得很/没什么可忙
You use on in expressions such as ''have a lot on'' and ''not have very much on'' to indicate how busy someone is.
e.g. I have a lot on in the next week.
我下周特别忙。
23. （引出所进行的活动，特别是旅行）处于…情况中，在从事…中
You use on to introduce an activity that someone is doing, particularly travelling.
e.g. I''ve always wanted to go on a cruise...
我一直想坐游轮旅游。
e.g. They look happy and relaxed as they stroll in the sunshine on a shopping trip...
他们漫步于阳光下购物，看上去悠然惬意。
24. （机器、电灯等）开着，工作着，使用中
When something such as a machine or an electric light is on, it is functioning or in use. When you switch it on, it starts functioning.
on的反义词
e.g. The light was on and the door was open...
灯亮着，门也敞开着。
e.g. The central heating''s been turned off. I''ve turned it on again...
中央供暖系统已经关上。我又将它打开了。
25. 是…的成员；供职于
If you are on a committee or council, you are a member of it.
e.g. Claire and Beryl were on the organizing committee...
克莱尔和贝丽尔是组委会成员。
e.g. He was on the Council of Foreign Relations.
他任职于外交关系委员会。
26. 在（某一日子或日期）（发生）
You can indicate when something happens by saying that it happens on a particular day or date.
e.g. This year''s event will take place on June 19th, a week earlier than usual...
今年的活动将于6月19日举行，比往年提前一周。
e.g. She travels to Korea on Monday...
她周一前往韩国。
27. 在…后立即；一…就
You use on when mentioning an event that was followed by another one.
e.g. She waited in her hotel to welcome her children on their arrival from London...
她在宾馆里等候，准备第一时间迎接孩子们从伦敦过来。
e.g. On reaching Dubai the evacuees are taken straight to Dubai international airport.
撤离人员一抵达迪拜就径直被送往迪拜国际机场。
28. （继续）下去
You use on to say that someone is continuing to do something.
e.g. They walked on in silence for a while...
他们继续默默无语地走了一会儿。
e.g. If the examination shows your company enjoys basically good health, read on...
要是审查表明你们公司的运营状况基本良好，请继续往下读。
29. 不停地（数落、抱怨、纠缠）
If you say that someone goes on at you, you mean that they continually criticize you, complain to you, or ask you to do something.
e.g. She''s been on at me for weeks to show her round the stables...
她缠了我好几个星期了，要我带她去马厩看看。
e.g. He used to keep on at me about the need to win...
他以前总是跟我唠叨必须获胜才行。
30. 从…时候起；自…以后
You use on in expressions such as from now on and from then on to indicate that something starts to happen at the time mentioned and continues to happen afterwards.
e.g. Perhaps it would be best not to see much of you from now on...
也许从现在起我们最好少见面。
e.g. We can expect trouble from this moment on...
从此刻起，我们将会麻烦缠身。
31. （常用在副词early，late，far及其比较级之后，尤置于句首、句尾或介词之前）
You often use on after the adverbs ''early'', ''late'', ''far'', and their comparative forms, especially at the beginning or end of a sentence, or before a preposition.
e.g. The market square is a riot of colour and animation from early on in the morning...
从大清早起这个市集广场就色彩缤纷，生机勃勃。
e.g. Later on I learned how to read music...
后来我学会了识谱。
32. 定期服用；服…成瘾
Someone who is on a drug takes it regularly.
e.g. She was on antibiotics for an eye infection that wouldn''t go away...
由于眼睛感染一直不见好，她在服用抗生素。
e.g. Many of the elderly are on medication.
许多老年人都需按时服药。
33. 以…（为食）；（机器）用（某种动力或燃料运转）
If you live on a particular kind of food, you eat it. If a machine runs on a particular kind of power or fuel, it uses it in order to function.
e.g. The caterpillars feed on a wide range of trees, shrubs and plants...
毛虫以各类树木、灌木和植物为食。
e.g. He lived on a diet of water and tinned fish...
他仅靠喝水、吃鱼罐头过活。
34. 以…（为收入）
If you are on a particular income, that is the income that you have.
e.g. ...young people who are unemployed or on low wages...
失业或低收入的年轻人
e.g. He''s on three hundred a week...
他的周薪为300块。
35. （税收或利润）获自…，来自…
Taxes or profits that are obtained from something are referred to as taxes or profits on it.
e.g. ...a general strike to protest a tax on food and medicine last week...
上周抗议对食品和药品征税的大罢工
e.g. The Church was to receive a cut of the profits on every record sold...
每卖出一张唱片就会有一部分利润捐给教会。
36. 在…方面（花钱）
When you buy something or pay for something, you spend money on it.
e.g. I resolved not to waste money on a hotel...
我决心不在住旅馆方面浪费钱。
e.g. He spent more on feeding the dog than he spent on feeding himself...
他喂狗花的钱比自己的饮食开销还多。
37. 在…方面（花时间或精力）
When you spend time or energy on a particular activity, you spend time or energy doing it.
e.g. People complain about how children spend so much time on computer games...
人们常抱怨孩子花太多时间玩电脑游戏。
e.g. You all know why I am here. So I won''t waste time on preliminaries.
你们都知道我来这里的目的。所以我就闲话少说了。
38. 无法接受的；行不通的
If you say that something is not on or is just not on, you mean that it is unacceptable or impossible.
e.g. I''m not having children who don''t like cheese. It''s not on...
我可不要不爱吃奶酪的孩子，那可不行。
e.g. We shouldn''t use the police in that way. It''s just not on.
我们不该那样动用警力，那根本不可接受。
39. 不停地；继续不断地
If you say that something happens on and on, you mean that it continues to happen for a very long time.
e.g. ...designers, builders, fitters — the list goes on and on...
设计师、建筑工人、装配工——这个单子可以没完没了
e.g. Lobell drove on and on through the dense and blowing snow.
洛贝尔冒着纷飞的大雪不停地往前开。
40. （表示困惑）在谈论什么
If you ask someone what they are on about or what they are going on about, you are puzzled because you cannot understand what they are talking about.
e.g. What on earth are you going on about?...
你到底在说些什么呀？
e.g. Honest, Kate, I don''t know what you''re on about.
说真的，凯特，我不知道你在说些什么。
41. （表示有信心）知道自己在说些什么，了解情况
If you say that someone knows what they are on about, you are confident that what they are saying is true or makes sense, for example because they are an expert.
e.g. It looks like he knows what he''s on about.
他看起来很在行。
42. 掌握不利于（某人）的证据；抓住（某人）的把柄
If someone has something on you, they have evidence that you have done something wrong or bad. If they have nothing on you, they cannot prove that you have done anything wrong or bad.
e.g. He may have something on her. He may have supplied her with drugs, and then threatened to tell if she didn''t do this...
他或许抓住了她的什么把柄。可能是给她提供了毒品，然后威胁她如果不这样做的话就告发她。
e.g. You''ve got nothing on me and you know it. Your theory would never stand up in a court of law.
你手里没有对我不利的证据，这一点你很清楚。你的揣测在法庭上是绝对站不住脚的。
43. on behalf of -> see behalf
on and off -> see off
and so on -> see so
on top of -> see top
adj
1. in operation or operational
e.g. left the oven on
the switch is in the on position
2. (of events) planned or scheduled
e.g. the picnic is on, rain or shine
we have nothing on for Friday night
on的近义词
adv
1. with a forward motion
e.g. we drove along admiring the view
the horse trotted along at a steady pace
the circus traveled on to the next city
move along
march on
Synonym: along
2. indicates continuity or persistence or concentration
e.g. his spirit lives on
shall I read on?
3. in a state required for something to function or be effective
e.g. turn the lights on
get a load on