touching or forming part of a surface (覆盖、附着:） 在…上（意指接触物体表面g构成物体表面的一部分U a picture on a waH 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 i‘t down on the
taWe.把它放在桌子Jt：。
◊ He had been hit on the head..他被打中了脑袋。◊ she dfmbed'on to the bed.她爬i; 了床。in^iJ This could also be written： onto the bed 此句亦可写作:，onto the bed 2 supported by sb/sth 由….支撑着：She was standing orrone /oot.她单脚站立着。◊ Try fying on your
bacfc.试着仰卧。◊ Hang your coat on
that hoofc.把衣服
挂在衣钩上。.3 used to show a means of transport 在 乂运输工具）上；He was on the jpZane介om Afew Vorfc. 他在6约泰的飞彳九上。◊ to trave〖 on the bu5/tube/coach $公共汽i /地鎂/长途汽车◊ / came on my &ifce.我骑自 行车来的。◊ a woman on
horseback骑马尚女郎4 used to show a day or
date 在某一、天）.：ffe came on Sunday.他是M期天来的。◊
We m纟et
cm Tuesdays•我们
每皇期二见面。◊
on May ^ie 卢rst/the
/irst 〇/
May 在五
启一自 〇 on tAe
ev.em'ng o/May the_/irst 在五月一.曰的晚
上◊ on one occasion 曾经有一次◊
on your birthday 在
你生日那天5 immediately
after sth就在…之后；’i一… 就：On
ah*ivfng home J discovered they had gone.我一 ii象就发现他们已经离开了。◊刊e〇5e report to reception on
arrival到送后谓立即到接待处报到。◊ There was a letter
waiting for him on his return.
在等着他看。6 about sth/sb关_ (事或乂T: a boofc on'South
A^ica — 本关于南非的书◊ She tested us on
frre^uZar vdrbs•她螓了羲丨由示M则动词。7 being carried by sb;
in the possession of sb (身上）带着； 有：ffave you got any on you?你带钱了没有?…
8 used to show that sb belongs to a group or an organ-
ization为（某团体或组织）的一员：to be 0/1 the
committee/sta#/jury/p£meZ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？ 9 eating or drinking stii; using a drug or a medicine
regularly吃；喝；按时服用（药物）：He Hved cm a diet 0/junfc/ood.他垃圾食品当饭吃。◊ The doctor put me on
anribforics.医生奏我M用抗生素。
10
used to show direction (表示方向）在，向，对：
on
the ㈣t/right 在左边 / 右边◊ He turned his bacfc on us•他转过身去背对着我们。11 at or near a place在， 接近（某地>:a town on the coast沿海的城镇◊ a house on the
Thames 泰晤士河畔的房子◊ We iived on cm
estate.我们住在一处主园上。.12 used to show the basis or reason for
sth 根据；由于：a story based on /act 基 于事实的小说◊ On their advice
J appZied/or the job•我 听从他们的建议申请了这份工作。13 paid for by sth 以…支付；由…支付：to Hve on a pensfon/a
student grant靠知老金/助_金生活<> to be pn a tow wa^e挣低 工资◊ Vou can’t/eed
a/ami〖y on £50 a vveefc•你无 每周
50 英镑养活一家乂。o Drinks are on me (=
I am
paying). i 我付。14 by means of sth;
using sth
通M;使用；借助于：She pZayed a time on her
guitar. 她用她的吉他_了一支曲子。◊ The fn/ormarion is avaiZ- iibZe on
the Jntemet.从互联网上可得到这个信息。◊ We spofce
on the phone.我们金.过电话▲ 了谈。◊ What’s on TV?电枧上有什么节 g f ❖ The programme’s on ChanneZ 4•这个节目在 4 频道。15 used with some nouns
or adjectives to say who or what is affected by sth (与某 些名词或形容词连用，表示影响到）：a ban on
smofcfng 对吸烟的禁令◊ He’s hard on his
kids.他对自己的孩子很
产房。◊ Go easy on the
mayo/ (= do not give me too much)少来一点蛋黄酱！ 16 compared with sb/sth 与… 相比：Sa〖es are up on^Kt year•销售量比去年增长了。
17
used to describe an activity or a state (■用于说明活 动或状态）：to be on business力loifday/vacation 在工作
/ 古福77ie’boofc is currently on 〖oan.该书已借出。
18
used when giving.a telephone number (用于电’话
号码前）：Ybu can get me on 0282
530 3906•你找我可
以拨+丁 0181 530 3906。◊ She’s on extension 2402•
分机号是2401。
madv. liiHU For the special uses of on
in phrasal verbs, look at the entries for the verbs. For example get on is in
the phrasal verb section at get. * on 在运语动词中的
特殊用法见有关动词词条。如get on在词条get的@语动 词部分。1 used to show that sth continues (表示持续
性）：He worked on without a breafc•他毫不停歇地继续
工作。◊ J/ you Zifce a good story, read
on.欲釦古i 事的趣 味M在，♦往下读。2
used
to show that sb/sth moves or is sent forwarxi 向前（移动
> :She stopped for a moment, then
waZfceci on.她停了
一会儿，然后又向谕走。
◊ Keep straight on /or the beach. —直向前走到海滩。◊ From, t/ien on /ie
never trusted her a^ain.从那时他
再也不信任她了。.
◊■Piease
send the letter on to my new address, ii把_件转寄到我的新地址。3
on
sb’s body; being worn + 会在身上；穿着；戴着：Put your coat on. 把知衣穿上。◊ J didn’t have my
glasses on.我没戴眼镜。
19
What did she have on (= what was she wearing)?
M 穿着什么衣服，4 covering, touching or
forming part of sth (表示覆盖、接触某物或成为某物的一部分> :Make sure the lid is on.要注意盖上盖子。5 connected or operating;
being used (表示已连_、处f工作状态或使
用中）：rhe Hghts were aH on.灯都亮着。◊ The TV is aZways on
in their house.他们家的电视总皇开着。◊ We
were without electricity for three hours but i^s on again now.我们停电三^小时了，'不迓现在文来电了。
6 happening (■表示发生）：rhere was a war on at the
time. %时正值战_。◊ What’s on at the
movies?电影哼 东上演什各片子？
◊
The band are on (= performing) in ten minutes.乐&再过十分钟开始演_。7
planned
to take place in the future (预先安排的事）将发生：The game is sriH on (= it has not been
cancelled).比赛仍将
举行。o I don^ think we've got
anything on this weekend•我想这个周末我们没安排活动。◊ J’m sorry we
car^t come—we’ve got a 〖ot 'on.很抱歉我们去不了
我们安排得太满了。8 on duty; working侖班；执行任
务中：J’m on now riH 8 tomorrow morning.我正在值 治，要值到明早8点钟。9 in or into a vehicle登上（车
辆 > :The
bus stopped and/our peopZe got on•公共汽车 奋下来，四个人上了车。：ofTiey hurried on to the piane. #们知忙登上了飞机。_see also onto be on about sth (informal) to talk about sth; to mean sth (某事）；有…的ik思：J didn’t know what he was
on
about, ft didn’t mafce sense.我不知道他说的什么。.他说
的没什么意义。be/go/keep _on about sth (/zi/orma/， disapproving) to talk in a boring or complaining way about sth 抱怨；喷叨；发牢骚：Stop fceeping on about it/ 别再唠叨那件秦了！
be/go/keep 'on at sb (to do sth) (/>7/om7fl/，d/sapprav/ng) to keep asking or telling sb sth so that they become
annoyed or tired ('对某人）絮
叨；说（或问！得令人生厌：He was on at me again to
tend him mon^.他又来缠着我借钱给他。be for sth (/Vj/orwfl/) to want to do
sth 邊要做某事：：Js anyone on jbr a drinfc
a/iter worfc?有人想下jk后喝一杯吗？
it 丨sn’t
on (informal) used to say that sth is not acceptable 行；沒门儿.on and _on without stopping;
continuously
20
续不#
地；持续地：She
went on anti on about her trip. M焱完没了地谈她的舨行。what are you,
etc. on? {informal) used
when you are very surprised at sb^ behaviour and are suggesting that they are
acting in a similar way to sb using drugs 你鬼迷心转 了吧；你 吃错药了吧 you’re ‘on (/n/o/7r?fl/j used when you are accepting a bet (用于接受打赌时）赌就赌吧一more at off adv.
■
on-'air 〇〇[/: (in radio and
television 用于广播及电视)
being broadcast .年在播放：She e^pZains how she deats
with on-air technicalproWems.她解释了她是如何处理播
敗中的技术向题的。BQ3off-air ►.on- air adv.
onan.ism /_3unanizam; AMmf _〇〇‘/
nown
[u]
1 = MASTURBATION at MASTURBATE 2 = COITUS
INTERRUPTUS
.on-'board adj. [only before noun] 1 on a
ship, aircraft or vehicle 在船（会;飞机、车}上的：an on-board motor 艇内发动板
2； (compw〖//?g 计）relating to, or controlled
by, part of the main circuit board 主板（控制）的； 板上的：a PC wit/i on-board sounci有板上声+的个人
电脑
Once 〇-w /wAns/ adv., conj.
■
adv. 1 on one occasion only; one time 仅一次；一次：
J’ve
only been there once.我只去过那里一灰。He cteans his car once a
week•他每周洗一次.汽车。<yShe only sees her parents once eve/y six
months•她每半年才探
M—次 父母。◊ (/n/omjfl/) He on〖y did ft t/ie once.这#事儿他仅
仅.%
过一次。2 at some time in the past —;曾 &:
J Once met your mother.我曾经-见过你每亲。◊ He once