on-air 1390 |

touching or forming part of a surface ( Si, PftH ) &-± (): a picture on a wall J#f ± ill o There’s a mark on your skirt. ftlUTAW ikMo 0 the diagram on page 5% 5 0 Put it down on the table.

o He had been hit on the head. ft 17ft 7IS£lo O She climbed on to the bed. M)N3±TJ^o    This could

also be written; onto the bed lit ft ft ft ft: onto the bed 2 supported by sb/sth ft £ If If : She was standing on one foot.         0 <> Try lying on your

back. <> Hang your coat on that hook. fEAII£

3 used to show a means of transport ft ( iiiXl; ) ±; He was on the plane from New York. ftftfi*lR|tG5A#l±o 0 to travel on the bus/tube/coach / -£i£fC7 01 came on my bike, ISM § jG o a woman on horseback cBP 4 used

to show a day or date ft ( ^ — A ) : He came on Sunday. ftJiMI$AA&A 0 We meet on Tuesdays. ISfi] # M $1—JSL® 0 o on May the first/the first of May ft3l R — 0 o on the evening of May the first ftftjl "0 65 ± 0 on one occasion H’gSTf —O on your birthday ft ft ft 0 8P A 5 immediately after sth ft ft • • ■ ZfE; — ■ • ■

: On arriving home I discovered they had gone. IS — ffeifc AMftfJE^pJFJo d Please report to reception on arrival. l!j IE if fL BP fj W: t# flU M o <> There was a letter waiting for him on his return, ft—          £tfit

ft^UftiA 6 about sth/sb ( ^^tA ) : a book on South Africa     0 She tested us on

irregular verbs, jfe # T IS ill W 7 M M ^Jia] „          7 being

carried by sb; in the possession of sb ( # ± ) ^ H; ft: Have you got any money on you? ft ^$5 7 t&W ?

8 used to show that sb belongs to a group or an organ­ization ^3 ( ^ a ft M #1 ) (Kj — M : to be on the committee/staff/jury/panel       7:ftIRM / PfftlS /

0 Whose side are you on (= which of two or more different views do you support)? ftj£#i|$—ft 1$«? 9 eating or drinking sth; using a drug or a medicine regularly n£; n§; JfcNJRffi ( 15^5 ) : He lived on a diet of junk food. ft ffiiil5.1l' pp ^  „ <> The

doctor put me on antibiotics.         IS JJ5 ft ^

10 used to show direction ( ^EtkAIo] ) ft, Iftl, Xt: on the left/right ftftiS/ ftii 0 He turned his back on us. ft$|s&#A#JWISCIa 11 at or near a place ft,

^ i£ ( ft ) : a town on the coast fSf (ft ffl, K o a house on the Thames #B§±M#6ilJ^ToWe lived on an estate, ISiHftft—&hJE£|II±o 12 used to show the basis or reason for sth ; ft 7: a story based on fact f£ 0 On their advice I applied for the job. IS D/rAftCIftjiMif 7&#Xfto 13 paid for by sth IM •• • % #; ft • • • x #: to live on a pension/a student grant          o to be on a low wage

7^ 0 You can’t feed a family on £50 a week. ftAj&H 50     — ^Ao 0 Drinks are on me (= I am

paying), tfcj&ll ft IS#o 14 by means of sth; using sth MM; ftft; fit®JT: She played a tune on her guitar. ftftft$Jnrft#7—AffiTo 0 The information is avail­able on the Internet.         A ft % 3\   J. 0 0 We

spoke on the phone.      0 What’s on

TV? ft^JSXTf'ft £,7 @ ? O The programme’s on Channel 4. M'TT' B ft 4 Milo 15 used with some nouns or adjectives to say who or what is affected by sth (

) : a ban on smoking 0 He’s hard on his kids.   B

f^Jjj o o Go easy on the mayo! (= do not give me too much)     ! 16 compared with sb/sth A- -

ffitfc: Sales are up on last year.

17                used to describe an activity or a state ( T 0J1 ti§

) : to be on business/holiday/vacation ft I# / o The book is currently on loan. £t}0

18                used when giving a telephone number ( T %

■^^ff ) : You can get me on 0181 530 3906.      pJ

0181 530 3906o 0 She’s on extension 2401. mmjk 2401D

adv. ihiiJ 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 ft^ig-^i^TW

jfo getonfti^&get

is]      1 used to show that sth continues (

ft ) : He worked on without a break.

I ft o o If you like a good story, read on.

Bfcfrft, if ft T i^o 2 used to show that sb/sth moves or is sent forward ft 1M ft ^ ) : She stopped for a moment, then walked on.          MJsXftllu^o

0 Keep straight on for the beach. ]|[ ft fu ^ 3\ M 0 0 From then on he never trusted her again.  ft

if BTftif ftTo o Please send the letter on to my new address, if ft ft ft $1 fF 3\ ft fr ft ft 0 3 on sb’s body; being worn iFftlfft;    it#: Put your coat on.

01 didn’t have my glasses on. ffcifcflcBlllio

19                What did she have on (= what was she wearing)? ft W lr ft ^ ftIR? 4 covering, touching or forming part of

sth (Axuii. mmm): Make sure the lid is on. W&Mmt dint1?- 0        5 connected or

operating; being used (

ft ) : The lights were all on. ftIPifilir „ 0 The TV is always on in their house, ft ft ^ (ft ft M & Ji ft lr 0 0 We were without electricity for three hours but it’s on again now. Hcft^ftT^ftftT, '7M£X*ft7o 6 happening (          ) : There was a war on at the

time. ^ RtfIEil[$c#-o 0 What’s on at the movies? ftjg^ O The band are on (= performing) in ten minutes. % IA # il ft ft # TF ft M i 0 7 planned to take place in the future (    The

game is still on (= it has not been cancelled),

^ ft o o I don’t think we’ve got anything on this weekend.       ^8ft&3c$i£3&. -9 I’m sorry we

can’t comewe’ve got a lot on. ilftifcficft^TT  

ft £ $ % Aif 7,o 8 on duty; working {IS; #lftft ^ ft : 7’m on now till 8 tomorrow morning, JH il i,      8J-?- 8         9 in or into a vehicle ( 7

) : The bus stopped and four people got on.

E97A±77o 0 They hurried on to the plane. ftft^Ht®±7^ljic —see also onto FR71 be 'on about sth (informal) to talk about sth; to mean sth i&i£ (    I didn’t know what he was on

about. It didn’t make sense. Sc7^Pilftift Wit 'a „ fti^ Kl iS:ft M Xo be/go/keep 'on about sth (informal, disapproving) to talk in a boring or complaining way about sth ftnf9U; ^7^: Stop keeping on about it!       ! be/go/keep 'on at sb (to do

sth) (informal, disapproving) to keep asking or telling sb sth so that they become annoyed or tired A ) % He was on at me again to lend him money. ftX^lill^ciH^ffto be 'on for sth {informal) to want to do sth         Is anyone on

for a drink after work? ^XMl'WUsb®—? it isn’t on (informal) used to say that sth is not acceptable 7 ft; mVL ,on and 'on without stopping; continuously She went on and on about her trip. ft&^ii&Tft-i&ftlftJfcfto what are you, etc. on? (informal) 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 ft %.    7' £§ 7 DB; ft

(& Ih 7 BE you’re 'on (informal) used when you are accepting a bet ( ft ) Jt&*&«B — more at

off adv.

,on-'air adj. (in radio and television ft Tft jf A ft W being broadcast JEfEfflifiX: She explains how she deals with on-air technical problems. Ml?#7 3Sfeft         pm OFF-AIR ► ,on-'air adv.

onan ism /'aunanizam; NAmE 'ou-/ noun [U] {formal)

20                = MASTURBATION at MASTURBATE 2 = COITUS INTERRUPTUS

,on-'board adj. [only before noun] 1 on a ship, aircraft or vehicle          7)±&T an on-board motor

B, ft   2 (computing if) relating to, or controlled

by, part of the main circuit board ( jSffciJ ) $J;

: a PC with on-board sound      657A

ft®

Once tHr /wAns/ adv., conj.

madv. 1 on one occasion only; one time ft—

I’ve only been there once. RAM:8PJt—o He cleans his car once a week. ft#ft ?5fc—o She only sees her parents once every six months.

0 (informal) He only did it the once. &#7JLftft ftTii —         2 at some time in the past ^^:

I once met your mother. IS ^ IgriE ilft#Sts 0 He once