for,of,off有什么区别?分别在什么时候用?

for,of,off有什么区别?分别在什么时候用?
for,of,off有什么区别?分别在什么时候用?

for,of,off有什么区别?分别在什么时候用?
for
AHD:[fôr] [f…r ] 非重读时
D.J.[f%8r][f* ]非重读时
K.K.[f%r][f+ ]非重读时
prep.（介词）
Used to indicate the object, aim, or purpose of an action or activity:
为了：用来指一个动作或活动的目的、目标或意图：
trained for the ministry; put the house up for sale; plans to run for senator.
为政府部门培训；把房子拍卖；计划竞选议员
Used to indicate a destination:
往,向：用来指目的地：
headed off for town.
出发去城里
Used to indicate the object of a desire, an intention, or a perception:
对于：用来指愿望、意图或感觉的目标：
had a nose for news; eager for fame and fortune.
消息灵通；渴求名利
Used to indicate the recipient or beneficiary of an action:
为：用来指一个活动的接受者或受益者：
prepared lunch for us.
为我们准备午餐
On behalf of:
代表：
spoke for all the members.
代表全体成员发言
In favor of:
对…支持：
Were they for or against the proposal?
他们支持这项议案还是反对呢?
In place of:
代替…：
a substitute for eggs.
鸡蛋的替代品
Used to indicate equivalence or equality:
等值,等量：用于表示等值或相同关系：
paid ten dollars for a ticket; repeated the conversation word for word.
花十美元买了张票；逐字逐句地重复谈话
Used to indicate correlation or correspondence:
用于表示关联或联系：
took two steps back for every step forward.
每前进一步向后退两步
Used to indicate amount, extent, or duration:
达：用于表示数量、范围或持续时间：
a bill for five dollars; walked for miles; stood in line for several minutes.
五美元的钞票；步行了数英里；排了几分钟的队
Used to indicate a specific time:
在：用于表示一个具体时间：
had an appointment for two o'clock.
两点钟有一个约会
As being:
当作：
take for granted; mistook me for the librarian.
视为当然；把我误认为是图书管理员
Used to indicate an actual or implied listing or choosing:
针对…：用于表示实际的或隐含的列举或选择：
For one thing, we can't afford it.
第一,我们买不起
As a result of; because of:
由于,因为：
jumped for joy.
因高兴而跳起来
Used to indicate appropriateness or suitability:
用于表示适度或适当：
It will be for the judge to decide.
这要由法官来决定
Notwithstanding; despite:
虽然,尽管：
For all the problems, it was a valuable experience.
尽管还存在许多问题,这仍不失为一次宝贵的经验
As regards; concerning:
关于,至于：
a stickler for neatness.
有洁癖的人
Considering the nature or usual character of:
至于：关于…的性质或一般特征：
was spry for his advanced age.
就他的高龄来说,他应该算是充满生气的了
In honor of:
为纪念…：
named for her grandmother.
为纪念她的祖母起的名字
conj.（连接词）
Because; since.
因为；既然
of
[Rv, Ev; (?@) C:f]
prep.
…的；属于…的
the wall of the garden
花园的围墙
He is of a clinging sort.
他是那种老要依靠人家的人.
由…制成的；由…组成 的
a dress of cotton
棉布衣服
包含的；容纳的
a bag of potatoes
一袋土豆
a kilo of butter
一公斤黄油
在其中；…之中的一部分
several of my friends
我的几个朋友
one of them
他们中间的一个
…所着的；…所做的
the shooting of the hunters
猎人的狩猎
the plays of Shakespeare
莎士比亚的戏剧
那是…；…的
a friend of mine
我的一位朋友
（表示动宾关系）做…
the shooting of animals
对动物的射击
与…有关联的
the results of the experiment
实验的结果
就是这个
the city of New York
纽约市
以…为题的；有关…的
stories of adventure
冒险故事
具有…性质的
a woman of great charm
妩媚的女人
与…的关系
east of Suez
苏伊士以东
（和某些短语搭配）由于,因为
a lover of good music
爱好音乐的人
He died of fever.
他死于高烧.
off
[5Rf; (?@) C:f]
adv.
离开,离去
to drive off
开走
脱离,脱落
The handle came off.
那个把手掉了.
She took off her shoes.
她脱掉鞋子.
关掉, 关上
cut off the gas
关上煤气
Turn the light off.
把灯关掉.
相距,隔着
12 nautical miles off
12海里以外
several years off
隔好几年
分开；断开
cut off
割断
使不存在；使完成；使停止
不工作,休息
With only one day off in a week working people had barely enough time to arrange the household.
一周休息一天时,上班族只能有时间勉强安排家务.
have Sunday off
星期日休息
badly off
贫困,贫穷
better off
情况较好
You'd be better off with a bicycle.
你最好骑自行车.
right off
立刻,马上 (= straight off)
well off
富裕
worse off
情况较差
off
prep.
离开
Keep off the grass.
勿践踏草坪.
脱离
Take the curtains off their hooks.
把窗帘从挂钩上取下来.
Two men took the parcel off the plane and carried it into the Customs House.
两个男子把这个包裹从飞机上取下,提着进了海关大楼.
从…去掉；从…减少
cut a piece off the loaf
从整个面包上切下一块
距离；离…；与…相隔
The ship was blown off course.
船被吹离了航道.
We are going off the subject.
我们离题了.
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前,有架轻便客机飞离了航线,在山区坠毁,飞行员丧生了.
离开…；从…分岔
a narrow street off the High Street
从大街拐进去的一条窄巷
在离…海的附近
an island off the coast of southeast
东南沿海的一个岛屿
不再喜欢；不再吃（药）
He's off his food.
他吃不下饭.
He's off smoking.
他戒烟了.
off
adj.
不新鲜的,变质的
That fish smells off.
那条鱼有味了.
（在餐馆）不再供应的（菜）
过分的；不正常的
I thought it was a bit off, not even answering my letter!
我觉得这有点过分,居然连我的信也不回!
在右侧的,右手边的
取消了的；不再举行了的
I'm afraid the meeting's off.
恐怕会不开了.
已经起跑的（选手）
关着的（电器）
不幸的,倒霉的（时期）
one of his off days
他倒霉的日子
安静的；低于通常水平的
Tickets are cheaper during the off season.
在（旅游）淡季票价较便宜.
Off
abbr.
办公室,办事处 (Officer)
军官,官员(Officer)