on
- prep.(覆盖、附着)在…上;由…支撑着;在(运输工具)上;在（某一天）;就在…之后;关于（事或人）;（身上）带着;为（某团体或组织）的一员;吃;（表示方向）在，向，对;在，接近（某地）;根据;以…支付;通过;与…相比
- adv.表示持续性;向前(移动);穿在身上;穿着;戴着;（表示发生）;（预先安排的事）将发生;值班;登上（车辆）
- adj.在进行;在发生;在活动;通着
- n.(打球人的)左边
onprep.
（覆盖、附着）在…上（意指接触物体表面或构成物体表面的一部分）
in or into a position covering, touching or forming part of a surface
a picture on a wall
墙上的画
There's a mark on your skirt.
你裙子上有一块斑。
the diagram on page 5
第5页上的图解
Put it down on the table.
把它放在桌子上。
He had been hit on the head.
他被打中了脑袋。
She climbed on to the bed.
她爬上了床。
onto the bed
由…支撑着
supported by sb/sth
She was standing on one foot.
她单脚站立着。
Try lying on your back.
试着仰卧。
Hang your coat on that hook.
把衣服挂在衣钩上。
在（运输工具）上
used to show a means of transport
He was on the plane from New York.
他在纽约来的飞机上。
to travel on the bus/tube/coach
乘公共汽车 / 地铁 / 长途汽车
I came on my bike.
我骑自行车来的。
a woman on horseback
骑马的女郎
在（某一天）
used to show a day or date
He came on Sunday.
他是星期天来的。
We meet on Tuesdays.
我们每星期二见面。
on May the first/the first of May
在五月一日
on the evening of May the first
在五月一日的晚上
on one occasion
曾经有一次
on your birthday
在你生日那天
就在…之后；一…就
immediately after sth
On arriving home I discovered they had gone.
我一到家就发现他们已经离开了。
Please report to reception on arrival.
到达后请立即到接待处报到。
There was a letter waiting for him on his return.
他一回来就有一封信在等着他看。
关于（事或人）
about sth/sb
a book on South Africa
一本关于南非的书
She tested us on irregular verbs.
她考了我们的不规则动词。
（身上）带着；有
being carried by sb; in the possession of sb
Have you got any money on you?
你带钱了没有？
为（某团体或组织）的一员
used to show that sb belongs to a group or an organization
to be on the committee/staff/jury/panel
为委员会 / 全体职员 / 陪审团 / 专家组的成员
Whose side are you on (= which of two or more different views do you support) ?
你支持哪一方的观点？
吃；喝；按时服用（药物）
eating or drinking sth; using a drug or a medicine regularly
He lived on a diet of junk food.
他把垃圾食品当饭吃。
The doctor put me on antibiotics.
医生要我服用抗生素。
（表示方向）在，向，对
used to show direction
on the left/right
在左边 / 右边
He turned his back on us.
他转过身去背对着我们。
在，接近（某地）
at or near a place
a town on the coast
沿海的城镇
a house on the Thames
泰晤士河畔的房子
We lived on an estate.
我们住在一处庄园上。
根据；由于
used to show the basis or reason for sth
a story based on fact
基于事实的小说
On their advice I applied for the job.
我听从他们的建议申请了这份工作。
以…支付；由…支付
paid for by sth
to live on a pension/a student grant
靠养老金 / 助学金生活
to be on a low wage
挣低工资
You can't feed a family on £50 a week.
你无法靠每周50英镑养活一家人。
Drinks are on me (= I am paying) .
饮料钱由我付。
通过；使用；借助于
by means of sth; using sth
She played a tune on her guitar.
她用她的吉他弹了一支曲子。
The information is available on the Internet.
从互联网上可得到这个信息。
We spoke on the phone.
我们通过电话谈了谈。
What's on TV?
电视上有什么节目？
The programme's on Channel 4.
这个节目在4频道。
（与某些名词或形容词连用，表示影响到）
used with some nouns or adjectives to say who or what is affected by sth
a ban on smoking
对吸烟的禁令
He's hard on his kids.
他对自己的孩子很严厉。
Go easy on the mayo! (= do not give me too much)
少来一点蛋黄酱！
与…相比
compared with sb/sth
Sales are up on last year.
销售量比去年增长了。
（用于说明活动或状态）
used to describe an activity or a state
to be on business/holiday/vacation
在工作 / 度假中
The book is currently on loan.
该书已借出。
（用于电话号码前）
used when giving a telephone number
You can get me on 0181 530 3906.
你找我可以拨打0181 530 3906。
She's on extension 2401.
她的分机号是2401。
adv.
（表示持续性）
used to show that sth continues
He worked on without a break.
他毫不停歇地继续工作。
If you like a good story, read on.
欲知故事的趣味所在，请往下读。
向前（移动）
used to show that sb/sth moves or is sent forward
She stopped for a moment, then walked on.
她停了一会儿，然后又向前走。
Keep straight on for the beach.
一直向前走到海滩。
From then on he never trusted her again.
从那时起，他再也不信任她了。
Please send the letter on to my new address.
请把信件转寄到我的新地址。
穿在身上；穿着；戴着
on sb's body; being worn
Put your coat on.
把外衣穿上。
I didn't have my glasses on.
我没戴眼镜。
What did she have on (= what was she wearing) ?
她穿着什么衣服？
（表示覆盖、接触某物或成为某物的一部分）
covering, touching or forming part of sth
Make sure the lid is on.
要注意盖上盖子。
（表示已连接、处于工作状态或使用中）
connected or operating; being used
The lights were all on.
灯都亮着。
The TV is always on in their house.
他们家的电视总是开着。
We were without electricity for three hours but it's on again now.
我们停电三个小时了，不过现在又来电了。
（表示发生）
happening
There was a war on at the time.
当时正值战争。
What's on at the movies?
电影院在上演什么片子？
The band are on (= performing) in ten minutes.
乐队再过十分钟开始演奏。
（预先安排的事）将发生
planned to take place in the future
The game is still on (= it has not been cancelled) .
比赛仍将举行。
I don't think we've got anything on this weekend.
我想这个周末我们没安排活动。
I'm sorry we can't come─we've got a lot on .
很抱歉我们去不了——我们安排得太满了。
值班；执行任务中
on duty; working
I'm on now till 8 tomorrow morning.
我正在值班，要值到明早8点钟。
登上（车辆）
in or into a vehicle
The bus stopped and four people got on.
公共汽车停下来，四个人上了车。
They hurried on to the plane.
他们匆忙登上了飞机。
to talk about sth; to mean sth
我不知道他说的什么。他说的没什么意义。
I didn't know what he was on about. It didn't make sense.
to talk in a boring or complaining way about sth
别再唠叨那件事了！
Stop keeping on about it!
to keep asking or telling sb sth so that they become annoyed or tired
他又来缠着我借钱给他。
He was on at me again to lend him money.
to want to do sth
有人想下班后喝一杯吗？
Is anyone on for a drink after work?
used to say that sth is not acceptable
without stopping; continuously
她没完没了地谈她的旅行。
She went on and on about her trip.
used when you are very surprised at sb's behaviour and are suggesting that they are acting in a similar way to sb using drugs
used when you are accepting a bet
from time to time; now and again
雨断断续续地下了一整天。
It rained on and off all day.
on
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In addition to the uses shown below, on is used after some verbs, nouns, and adjectives in order to introduce extra information. On is also used in phrasal verbs such as ‘keep on’, ‘cotton on’, and ‘sign on’.
除下列用法外，on可以用在某些动词、名词和形容词之后引出附加信息。on还可用于keep on, cotton on, sign on等短语动词中。
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3
PREP （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.He is sitting beside her on the sofa...
他挨着她坐在沙发上。
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4
PREP （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.I admired the peeling paint on the ceiling...
我“观赏”着天花板上正在剥落的油漆。
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5
PREP （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.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。
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6
PREP （身体重量）由（某部位）支撑
You use on to say what part of your body is supporting your weight.He continued to lie on his back and look at clouds...
他仍旧仰卧着，望着天上的云彩。
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7
PREP （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.He leaned down and kissed her lightly on the mouth...
他俯下身去，在她嘴唇上轻轻一吻。
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8
PREP （某种表情）在（脸）上
If someone has a particular expression on their face, their face has that expression.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。
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9
ADV （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.He put his coat on while she opened the front door...
她打开前门时，他穿上了大衣。
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10
PREP 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.I didn't have any money on me...
我身上一分钱也没有。
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11
PREP （视线）落在…身上
If someone's eyes are on you, they are looking or staring at you.Everyone's eyes were fixed on him...
每个人都盯着他看。
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12
PREP （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.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。
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13
PREP 在（某）地
If you are on an area of land, you are there.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。
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PREP 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.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。
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15
PREP 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.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。
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16
PREP （写或印刷）在…上
If there is something on a piece of paper, it has been written or printed there.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。
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PREP 在（名单）上；包括在…内
If something is on a list, it is included in it.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。
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18
PREP （书、讨论或观点）关于，涉及
Books, discussions, or ideas on a particular subject are concerned with that subject.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。
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19
PREP 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....a television that we bought on credit two months ago.
我们两个月前赊购的电视机
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20
PREP 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....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
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21
PREP 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.'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。”
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22
PREP 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.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。
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23
ADJ 正在发生的
When an activity is taking place, you can say that it is on .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。
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24
ADV （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.I have a lot on in the next week.
我下周特别忙。
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25
PREP （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.I've always wanted to go on a cruise...
我一直想坐游轮旅游。
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26
ADV （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.The light was on and the door was open...
灯亮着，门也敞开着。
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PREP 是…的成员；供职于
If you are on a committee or council, you are a member of it.Claire and Beryl were on the organizing committee...
克莱尔和贝丽尔是组委会成员。
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28
PREP 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.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。
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29
PREP 在…后立即；一…就
You use on when mentioning an event that was followed by another one.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。
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30
ADV （继续）下去
You use on to say that someone is continuing to do something.They walked on in silence for a while...
他们继续默默无语地走了一会儿。
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31
ADV 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.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。
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32
ADV 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.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。
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33
ADV （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.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。
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34
PREP 定期服用；服…成瘾
Someone who is on a drug takes it regularly.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。
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35
PREP 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.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。
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36
PREP 以…（为收入）
If you are on a particular income, that is the income that you have....young people who are unemployed or on low wages...
失业或低收入的年轻人
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37
PREP （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....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
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38
PREP 在…方面（花钱）
When you buy something or pay for something, you spend money on it.I resolved not to waste money on a hotel...
我决心不在住旅馆方面浪费钱。
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PREP 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.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。
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40
PHRASE 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.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。
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41
PHRASE 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....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
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42
PHRASE （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.What on earth are you going on about?...
你到底在说些什么呀？
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43
PHRASE （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.It looks like he knows what he's on about.
他看起来很在行。
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44
PHRASE 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.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。
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45
on behalf of→ see:behalf
adj
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1
- in operation or operational
- left the oven on
- the switch is in the on position
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2
- (of events) planned or scheduled
- the picnic is on, rain or shine
- we have nothing on for Friday night
adv
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1
- with a forward motion
- 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
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2
- indicates continuity or persistence or concentration
- his spirit lives on
- shall I read on?
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3
- in a state required for something to function or be effective
- turn the lights on
- get a load on
数据来源：WordNet
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I got to know David on the second day of middle school .
我在上中学的第二天就认识了大卫。
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Police officers rushed to the scene and found the man had onlybeen on the toilet .
警方很快赶到了现场，却发现邻居的男子只不过是在上厕所罢了。
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The team put on a good show in the competition .
这支队伍在比赛中有上佳表现。
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You can get me on 0181 530 3906 .
你找我可以拨打01815303906。
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The results are a clear comment on government education policy .
这些结果是对政府教育政策明显的批评。
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In our company , quality is high on the agenda .
我们公司高度重视质量。
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Further information is available on application to the principal .
申请书请交校长，届时将提供详情。
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I don 't have that much money on me .
我身上没带那么多钱。
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Work has begun on the construction of the new airport .
新机场的修建已经开工。
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The house came on the market last year .
这栋房屋去年就上市了。
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The content of the course depends on what the students would like to study .
课程的内容取决于学生愿意学什么。
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The discussion focused on three main problems .
讨论集中在三个主要问题上。
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Someone has made an attempt on the President 's life .
有人企图刺杀总统。
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It was a real struggle to be ready on time .
要按时做好准备确非易事。
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Take the second road on the right .
第二个路口向右拐。
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Can I have a go on your new bike ?
我能骑骑你的新自行车吗？
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There 's building work going on next door .
邻居正大兴土木。
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Sales are well up on last year .
销量比去年大幅增加。
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How much are these ? They don 't have a price on them .
这些东西卖多少钱？它们都没有标价。
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The president appears likely to change course on some key issues .
总统看起来可能要在某些重要问题上改变方针。
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The car was found on a piece of waste ground .
那辆车是在一块荒地里发现的。
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Tickets are available on a first come , first served basis .
票先来先买，售完为止。
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Will the software run on my machine ?
这个软件在我的机器上能用吗？
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The latest models will be on display at the motor show .
最新的车型将会在这次汽车展上展出。
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On such a hot day , even water was nectar .
这么热的天，清水都是甘露。
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New legislation on the sale of drugs will be introduced next year .
有关药物销售的新法规将于明年出台。
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Computer software can be used to simulate conditions on the seabed .
计算机软件可用于模拟海底状况。
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I got the job on the strength of your recommendation .
由于您的推荐，我得到了那份工作。
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Much later on , she realized what he had meant .
过了好长时间，她才明白他的意思。
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The system is unable to log you on .
这个系统无法让你登录。
- 习语