高考词汇词
O

1. obey (v.) 服从，遵守 obey sb./sth.
obedient (a.) 驯服，服从
obedience (n.) in obedience to sth. 服从
2. object (n.) 物件article;目的,目标;对象;宾语
objection (n.) 反对
objective (a.) 客观的；(n.) 目标，宗旨
no object不是问题，不是困难所在
there’s no object in doing sth.
see no object in doing sth. 没有道理的
(v.) object to sth./doing sth. 反对
object (against sb.) that…反对说
3. oblige (v.)
obligation (n.) 义务obligatory (a.) 必须的
oblige sb. to do sth. 迫使
受（法律等）约束，不得不做某事
be obliged to sb. for sth. 感激某人
be under (an) obligation to do sth.有义务做某事
4. observe (v.) 留意到；观察；遵循；庆祝
observation (n.)
avoid/escape observation 逃避他人注意
under observation 被监视
5. obtain (vt.) obtainable (a.) 可以得到的
obtain sth. (permission)
6. obvious (a.) obviously (ad.) 显而易见
It is obvious that…
7. occasion (n.) occasion为先行词，其定语从句一般用on which或when来引导
occasional (a.) occasionally (ad.)
on … occasion 在……场合
have no occasion to do sth.没理由/必要做某事
take this/that occasion to do sth.借机做某事
8. occupy (vt.) 占据（时间、空间）occupation (n.)
be occupied (in/with doing sth.) 忙于
9. occur (vi.) 没有被动态
sth. occur (to sb.) 某人发生某事
It occurs/occurred to sb. that…
10. odd (a.) 古怪的，零散的，多余的，奇数
oddly (ad.) oddly enough说也奇怪
11. of (prep.)
表示所有关系，“……的”
表示人或物的特征
e.g. of medium height/of great value
和动词连用，意思接近about
e.g. talk of/speak of/tell sb. of sth.
和动词连用，表示“失掉”
b/cure/relieve/break/cheat sb. of sth.
和某些形容词或分词连用，表示“因为”
e.g. be sick of/be afraid of/be tired of
和名词、代词或数词连用
e.g. a packet of/millions of
和名词连用，表示同位语
e.g. the city of Newcastle
It + “be” + (a.) of sb. to do sth.
of age成年
of course当然，没问题
of late近来
12. off (ad.) (prep.)表示“离开、走掉”
be well/badly off经济好/坏；富裕/贫困
break off 中断，解除（婚约），断绝
turn/switch off 关上
call off 取消
put off 推迟，延误
take off 脱下，取消，停止上演
drop off 减少，让……下车
go off 爆炸，/铃响
bring sth. off使成功
hold off 雨、雪暂时不下
off balance 失去平衡
off duty 不上班
take sth. off the price 减……价
13. offend (vt.) offender (n.) offence (n.)
offend sb. 触怒，得罪，冒犯
take offence 生气，不高兴
14. offer (v.) (n.) offer还可以表示出价
offer sb. sth. / offer sth. to sb.
offer to do sth. 主动提出要做某事
object to
15. office (n.) officially (ad.) 正式地，按官方说法
officer (n.) 军官official (n.) 官员
in/out of office（不）执政，（不）当权
take/assume office 就职
16. often (ad.)
more often than not 在更多情况下，多半
17. oil (n.)
burn the midnight oil 开夜车
in oils 油画
strike oil 发现石油，有重大发现
18. old (a.) old-fashioned (a.) 过时的
old story 常有的事，经常发生的事
19. omit (vt.) omit sth. / doing sth. omission (n.)
20. on (prep.) (ad.)
在……上面；在具体某一时间；根据；关于；靠……
on end 连续地
on one’s own 独立地，不用别人帮忙
on the committee/staff/team…是……的成员
on time/the dot 准时
put on/have/on/try on穿戴；
be on/turn on/switch on开着；
put on/be on上演
21. once (ad.)
at once 立刻
once and for all / forever 一劳永逸地
once in a while 偶尔
once upon a time 从前
22. one (pron.) one-sided (a.) 片面的
one another 彼此
one at a time 一次一个
for one thing…for another…一个原因是……
one by one 一个一个地
ten to one 十之八九
one in a thousand 很少
by ones or twos 三三两两地
in one 身兼……职

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