動詞 off:

1. kill intentionally and with premeditation
   同義詞：murder, slay, hit, dispatch, bump off, polish off, remove

形容詞 off:

1. not in operation or operational
2. below a satisfactory level
3. (of events) no longer planned or scheduled
   同義詞：cancelled
4. in an unpalatable state
   同義詞：sour, turned
5. not performing or scheduled for duties

副詞 off:

1. from a particular thing or place or position (`forth' is obsolete)
   同義詞：away, forth
2. at a distance in space or time
   同義詞：away
3. no longer on or in contact or attached

1. It rained on and off all day.
   整天斷斷續(xù)續(xù)地下著雨。
2. Make sure the central heating is off.
   集中供暖設(shè)備一定要關(guān)掉。
3. We went to the station to see her off.
   我們?nèi)ボ囌緸樗托小?/div>
4. Please turn the light off before leaving the room.
   離開房間前，請把燈關(guān)掉。

off

adv.（副詞）
From a place or position:
離開：離開一個地方或職位：
例句：
drove off.
開走

At a certain distance in space or time:
一段時間，一段距離：在時間上或空間上有一定距離：
例句：
a mile off; a week off.
一英里遠(yuǎn)；放一星期的假

From a given course or route; aside:
遠(yuǎn)離，離開：離開給定的道路或路線；在一邊：
例句：
swerved off into a ditch.
轉(zhuǎn)彎掉進(jìn)溝里了

Into a state of unconsciousness:
進(jìn)入一種無知覺的狀態(tài)：
例句：
I must have dozed off.
我一定是打盹睡過去了

So as to be no longer on, attached, or connected:
不附著, 不連接：不再有、不再帶有或聯(lián)結(jié)：
例句：
shaved off his mustache.
刮掉了他的胡子

So as to be divided:
分割：
例句：
marked off the playing field by yards.
以碼來區(qū)隔球場

So as to be no longer continuing, operating, or functioning:
不繼續(xù)運(yùn)行：不再繼續(xù)、不再工作或發(fā)揮作用：
例句：
switched off the radio.
關(guān)掉了收音機(jī)

So as to be completely removed, finished, or eliminated:
完全搬走、完成或排除：
例句：
kill off the mice.
殺光老鼠

So as to be smaller, fewer, or less:
變小，變少：更小、更少或幾乎沒有：
例句：
Sales dropped off.
銷售量下降

So as to be away from work or duty:
離開工作或職責(zé)：
例句：
They took a day off.
他們休息一天

Offstage.
離開舞臺（離開屏幕）
adj.（形容詞）

Distant or removed; farther:
遠(yuǎn)的；遠(yuǎn)離的：
例句：
the off side of the barn.
馬廄的那一邊

Remote; slim:
遙遠(yuǎn)的；細(xì)小的：
例句：
stopped by on the off chance that they`re home.
停下車看看，既使他們在家的可能性很小

Not on, attached, or connected:
沒有穿的或聯(lián)結(jié)的：
例句：
with his shoes off.
他沒穿鞋子

Not operating or operational:
沒有工作或不在運(yùn)行的：
例句：
The oven is off.
爐子關(guān)著

No longer taking place; canceled:
不再發(fā)生；取消的：
例句：
The wedding is off.
婚禮取消了

Slack:
落后懈怠的：
例句：
Production was off this year.
今年產(chǎn)量不行

Not up to standard; below a normal or satisfactory level:
沒有達(dá)到標(biāo)準(zhǔn)的；在正?；蚝细袼街碌模?/br>例句：
Your pitching is off today.
你今天的投球情況不甚理想

Not accurate; incorrect:
不精確的；不正確的：
例句：
Your statistical results are off.
你的統(tǒng)計(jì)數(shù)據(jù)不精確

Somewhat crazy; eccentric:
有點(diǎn)瘋狂的；古怪的：
例句：
I think that person is a little off.
我覺得那個人有點(diǎn)古怪

Started on the way; going:
開始上路的；準(zhǔn)備走的：
例句：
I`m off to see the president.
我這就去見經(jīng)理

Absent or away from work or duty:
不上班或離開職責(zé)的：
例句：
He`s off every Tuesday.
他每個星期二都休息

Spent away from work or duty:
休假的：在離開職責(zé)中度過：
例句：
My off day is Saturday.
我的休息日是星期六

Being on the right side of an animal or a vehicle.
在（動物或車輛）右邊的
Being the animal or vehicle on the right.
右邊動物的，車輛右邊的
Nautical Farthest from the shore; seaward.
【航?！?/i> 向海的：離岸最遠(yuǎn)的；向海的
Sports Toward or designating the side of the field facing the batsman in cricket.
【體育運(yùn)動】 擊球員右前方的：在板球賽中，面向或指向正對擊球手的那一邊
Off-color.
褪色的
prep.（介詞）
So as to be removed or distant from:
為了被移走或遠(yuǎn)離：
例句：
The bird hopped off the branch.
那只鳥跳離枝條

Away or relieved from:
離開或從…解脫開：
例句：
off duty.
下班后

By consuming:
以…為食，靠…為食：
例句：
living off locusts and honey.
以吃蝗蟲和蜂蜜為生

With the means provided by:
用由…提供的方式：
例句：
living off my pension.
靠我的養(yǎng)老金為生

Informal From:
【非正式用語】 從…來：
例句：
.What else do you want off meô.(Jimmy Breslin)
.你還想從我這得到些什么ô.(吉米·布雷斯林)

Extending or branching out from:
從…擴(kuò)充或分支出來的：
例句：
an artery off the heart.
從心臟分支出的動脈

Not up to the usual standard of:
沒有達(dá)到通常水準(zhǔn)的：
例句：
off his game.
他比賽中失常

So as to abstain from:
為了戒除的：
例句：
went off narcotics.
因麻醉而昏睡過去

Nautical To seaward of:
【航?！?/i> 距向海的方向的：
例句：
a mile off Sandy Hook.
距桑迪胡克一英里

v.（動詞）
offed,off.ing,offs
v.intr.（不及物動詞）
To go away; leave:
走開；離開：
例句：
Off with you or I`ll call the police.
你走開，否則我就喊警察

v.tr.Slang （及物動詞）【俚語】
To murder.
謀殺

來源：
Variant of Middle English of
中古英語 of的變體
from Old English * see apo-
源自 古英語 *參見 apo-

In Modern Englishthe compound prepositionoff of is generally regarded as informal and is best avoided in formal speech and writing:
在現(xiàn)代英語中，復(fù)合介詞off of 一般被認(rèn)為是非正式的， 最好在正式講演和作品中回避使用：
例句：
He stepped off (not off of ) the platform.
他跨過（不用 off of ) 月臺。

Offis informal as well in its use to indicate a source: formal style requiresI borrowed it from (not off ) my brother.
Off當(dāng)用來指來源時也是非正式用法： 正式用法應(yīng)是：我從 （不用 off ) 我兄弟那借來