Learner's definition of OFF
1
a : away from a place离开（某处） -
The dog ran off.狗跑了。
-
The car sped off.汽车快速开走了。
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She put on her jacket and off she went.她穿上夹克衫走了。
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We get off at the next bus stop. [=we exit the bus at the next stop]我们在下一站下公共汽车。
b : away from a main road, path, etc.离开（大道、大路等） 2
: at a distance in time or space（时间或空间上）距，离 -
Football season is not far off. [=football season will start soon]离橄榄球赛季不远了。
-
The completion of the new office building is still a long way off. [=it will be a long time before the new office building is finished]新办公楼还远未完工。
3
—
used to describe something that moves or is moved so that it is no longer on something or attached to something脱离，脱掉（表示从某处移走或分离） -
She set the ball on the table and it rolled off.她将球放在桌上，球滚下来了。
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His hat fell off.他的帽子掉了。
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He twisted off the cap.他拧开盖子。
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The handle on the pan broke off.锅柄断了。
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She took off her coat.她脱掉外衣。
5
a —
used to describe stopping something关掉；切断 b —
used to describe getting something into a desired condition especially by removing something（整理）好；（弄）好 -
I need to smooth off the corners of the bookshelf.我得把书架的四角抚平。
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I dusted off the shelves.我擦掉了架子上的灰尘。
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She wiped the counter off.她将柜台擦干净了。
c —
used to describe finishing something做完；光 6
: away from regular work歇班；休息 -
I took the day off (from work).这天我请假（歇班）。
-
At noon, workers take time off for lunch.中午时，工人们休息吃午饭。
-
I have weekends off. [=I do not go to work on the weekends]我周末不上班。
off and on
or on and off
: starting, stopping, and starting again : not constant or steady over a period of time断断续续地 -
It rained off and on all day.雨断断续续地下了一整天。
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The fighting continued off and on throughout the years.战争断断续续地打了好多年。
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She worked here on and off for several years.她断断续续地在这里工作了几年。
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They've had an on-and-off relationship.他们的关系一直时断时续。
2 off /ˈɑːf/ preposition
Learner's definition of OFF
1
—
used to indicate separation, distance, or removal from someone or something分离；从…移开 -
She cut a slice off the loaf.她从长条面包上切下一片。
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The ball bounced off the wall.球从墙上弹回来。
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She stepped off the train and looked around.她走下火车向四周看了看。
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There are many paths off the main trail around the mountain.环山主要路线有许多小岔道。
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There is a bathroom off the kitchen.厨房旁边有一间浴室。
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The shop is just off the main street.商店离主街不远。
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He had his wallet stolen off him.他的钱包被人偷走了。
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Keep off the grass.勿踏草坪。
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Get your feet off the table.把脚挪开，别踩桌子。
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The boat was two miles off the coast.小船距海边两英里。
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The discussion got/moved off the original subject.讨论偏离了原来的主题。
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My favorite dish has been taken off the menu.我喜欢吃的那道菜已从菜单上删除了。
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I'll take your name off the list.我将把你的名字从名单上划掉。
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She wore the gown off the shoulder.她穿着露肩的礼服。
2
: on money, food, energy, etc., supplied by (someone or something)依靠…（过活） -
She is still living off her parents.她仍然依靠着父母生活。
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The family lives off welfare.这家人靠救济金过日子。
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They live off the land.他们靠土地生活。
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They make their living off tourism.他们靠搞旅游谋生。
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The machine runs off [=on] diesel fuel.这台机器用柴油运转。
3
—
used to indicate something that someone is no longer doing or using（表示不再做某事或用某物）不再…，戒掉… -
She has recently gone off smoking.她近来不再吸烟了。
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He is off his diet.他不再节食。
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The officers were off duty.政府官员歇班了。
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I took a day off work.我歇一天班。
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He has been off liquor for three years.他已三年不喝酒了。
4
—
used to indicate the object of an action（表示动作的对象）从…分开，除掉 5
—
used to indicate the source or cause of something（表示来源或原因）来自，由于 6
: below the usual standard or level of (something)低于…水平 -
(chiefly US) He is off his game. [=he is not playing as well as he usually does]他不在比赛状态。
-
The DVDs are being offered at 15 percent off the regular price.*DVD现在的售价低于正常价格15%。
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I asked him to knock $100 off the price.我要他减价100美元。
off of
chiefly US, informal
: off -
She fell off of the swing.她从秋千上掉了下来。
-
farmers who live off of the land靠土地生活的农民
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He is off of his diet.他不再节食了。
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We ate off of paper plates.我们不再用一次性纸盘了。
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15 percent off of the regular price比正常价格低15%
3 off /ˈɑːf/ adjective
Learner's definition of OFF
1
not used before a noun : not attached to or covering something : not on不连接；不盖在上面 2
a not used before a noun : not operating, functioning, or flowing不运转；不运作；不流通 b : in a position that stops the flow of electricity, water, etc.（水、电等）关着，停着 3
: away from home or work离开家的；不工作的 -
He is off playing golf.他去打高尔夫球了。
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She is off on a trip/vacation.她外出旅游/度假。
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He's off today.他今天休息。
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They enjoy hiking and biking on their off days. [=the days when they are not working]在休假日他们喜欢徒步和骑车旅游。
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She is off [=out] sick today.她今天因病没上班。
4
not used before a noun : not happening不举行；取消 -
The deal/game that was on is now off. [=has been canceled]这笔已在进行的生意/这场已在进行的比赛现在取消了。
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In case of a tie, all bets are off.如果比分持平，所有的赌注一律不算数。
5
not used before a noun,
chiefly US : not correct : wrong错误 -
I must be off in my calculations.我准是算错了。
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These numbers are off.这些数字不对。
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Your guess is way off!你猜得太离谱了！
6
always used before a noun : very small in degree : slight微小的 7
always used before a noun : not as busy or active as other periods of time萧条的；淡季的 8
not used before a noun : not completely sane神智不太健全；头脑不够清醒 9
not used before a noun —
used to ask about or describe someone's situation or condition处于…境况 -
Are you better or worse off financially than you were a year ago?比起一年前，你的经济情况是好转还是恶化了呢？
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The other accident victims are much worse off than she is. [=her injuries are not as bad as theirs]事故中其他受伤的人比她的情况糟得多。
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(chiefly Brit) We're comfortably off.我们的生活很富裕。
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(chiefly Brit) How are you off for money? [=how are you for money?; do you need money?]你的钱够吗？
— see also better off, well-off 10
not used before a noun,
chiefly US : below the usual price or value减价；下降 11
chiefly US : not as good as usual状态不如平常好的 12
not used before a noun,
British : not being served : no longer on the menu从菜单上删去；暂不供应 13
not used before a noun,
chiefly British : no longer fresh : spoiled（食物）不新鲜 14
not used before a noun,
British, informal : not polite or friendly不礼貌；不友好 -
His manners were a bit off, don't you think?他的态度有点冷淡，你不觉得吗？
-
She felt he was being off with her.她感到他对她有些不友好。
be off
: to leave : to start going, running, etc.离开；出发 -
I must be off [=I must leave now] if I want to make the next bus.要想赶上下一班公共汽车，我必须马上走。
-
And the runners are off. [=the runners have started running]赛跑运动员们已经起跑了。
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They're off and running!他们起跑，跑起来了！
4 off /ˈɑːf/ verb
offs; offed; offing
offs; offed; offing
Learner's definition of OFF
[+ object] US slang
: to kill or murder (someone)杀死 5 off /ˈɑːf/ noun
Learner's definition of OFF
the off
British 1
: the beginning of a race赛跑的开始；起跑