prep.（介词）
(1)
In a direction or course opposite to:
逆：与某个方向或过程相反：
row against the current.
逆水行舟
(2)
So as to come into forcible contact with:
对撞：为与…达成猛烈接触：
waves dashing against the shore.
拍岸的波涛
(3)
In contact with so as to rest or press on:
倚在；紧靠着：与…接触为了休息或按压：
leaned against the tree.
斜靠着树
(4)
In hostile opposition or resistance to:
反抗；抵抗：处于敌对状况或与…相抗衡：
struggle against fate.
同命运抗争
(5)
Contrary to; opposed to:
与…相反；对：
against my better judgment.
与我的判断相反
(6)
In contrast or comparison with the setting or background of:
对照；对比：以…的布景或背景相对比：
dark colors against a fair skin.
深色衬托出白皙的肌肤
(7)
In preparation for; in anticipation of:
预期；以备：为…作准备；期待着…：
food stored against winter.
为过冬贮备的食物
(8)
As a defense or safeguard from:
预防；防御：以…为防御或保护对象：
protection against the cold.
预防感冒
(9)
To the account or debt of:
兑换；提取：作为帐上的应收款项或作为…的借项：
drew a check against my bank balance.
开支票支取自己的银行结余
(10)
Directly opposite to; facing.
正对着；面向
语源
--------------------------------------------------------------------------------
(1)
Middle English
中古英语
(2)
alteration of againes
againes的变化
(3)
from Old English ongeagn
源自 古英语 ongeagn
现代英汉词典
--------------------------------------------------------------------------------
against
[E5^eInst, E5^enst]
prep.
(1)
相反；逆着
against the law
违法
We sailed against the wind.
我们逆风行船。
Drug taking is against the law.
吸毒是违法的。
(2)
反对
We won our match against that team.
我们在比赛中赢了那个队。
No one is against this proposal.
没有人反对这个提议。
(3)
靠着，依着
to lean against the wall
靠着墙
(4)
与…成对照
against a dark background
与黑色背景成对照
The picture looks better against the light wall.
这幅画挂在浅色的墙上显得更美。
(5)
防备；防御
against the cold
防冷
against a rainy day
防备雨天
We are all taking medicine against the flu.
我们都在服药预防流感。
(6)
以…相抵
income against expenditure
以收抵支
against
[ə'ɡenst;
ə'ɡeinst]
prep.
1.
相反；反对；违反；违背；逆：
例句:
against
one's
will
违心地，违背意愿地
to
fight
against
evil
同邪恶做斗争
2.
撞击；撞着，碰着，顶着，触及，与…相撞，同…冲突：
例句:
to
push
against
the
door
用力推门
3.
跟…接触：
例句:
to
throw
the
ball
against
the
wall
用球击墙
4.
逆行，逆…方向，对着；跟…反方向：
例句:
to
drive
against
the
traffic
(汽车)逆行against
the
current
逆流
5.
与…(形成)对照，与…衬托；以…为背景：
例句:
green
against
the
gold
金黄色打底的绿色
6.
与…对比，表示对比关系：
例句:
He
was
elected
by
a
majority
of
30
votes
against
15.
他以30票对15票的多数当选。
7.
紧贴着，紧靠着；毗连；倚靠，凭：
例句:
the
house
against
the
church
教堂隔壁的房子
8.
以防，防，防备，以备，为…做准备(或防备)：
例句:
We
provided
against
a
poor
crop.
我们防备歉收。
9.
以…为交换条件，以…为交换对象，用…交换，以…报答：
例句:
to
trade
one
thing
against
another
以物易物
10.
用…抵付，抵消，作为…的借项；作为(账)上的应收的款项，入(账户)的借方：
例句:
Many
bills
were
entered
against
her
accounts.
许多账单被记入她的账户。
11.
对…不利：
例句:
an
evidence
against
him
一个对他不利的证据
12.
对着：
例句:
The
waves
were
dashing
against
the
shore.
波涛拍打着海岸。
13.
以…为抵抗(或抵御)对象；以…为防御措施：
例句:
We
are
all
taking
medicine
against
the
cold.
我们都服药以防感冒。
14.
以…为标准；根据：
例句:
I
checked
my
watch
against
GMT.
我以格林尼治时间对表。
15.
以…为竞争对手；与…相竞争：
例句:
to
work
against
time
以最快的速度工作
16.
[方言]到(某时)之前；不迟于：
例句:
We
must
finish
our
work
against
Saturday.
我们必须在星期六之前做完我们的工作。
17.
[废语]在…面前；暴露在…中conj.[古语][表示时间]在…之前：
例句:
Be
ready
against
mother
comes
home.
在母亲回家之前准备好。
adj.[通常作表语](对措施、提议等)反对的；对立的；对抗的(尤指成功、机会等)可能性不大的；不利的
短语
1.
as
against与…比较，比起…来
2.
be
against(something)
a.
违背，违反，无视，不顾(利益、愿望等)
b.
反对
c.
不利于
3.
dead
(set)
against[口语]断然反对；正对着
4.
over
against
a.
在…对面；正对着；和…相反
b.
与…形成对照；与…比较起来，和…对比[见over]
5.
up
against
a.
与…开始接触；与…接触着；接近于
b.
[口语]面临…的，面对…的，碰到(困难)；遭到(反对)
c.
违抗，顶撞[见up]
6.
up
against
it[美国口语]面临困境的，面临困难的[见up]
1、against作“反对”解时，反义词是for。
例如：
（1）We
are
all
against
his
idea.我们都反对他的想法。
（2）I'm
not
against
job
training.我并不反对职业培训。
2、against用在fight，strive，struggle等词后面，同with意思相同，不过against更强调一种困难中的反抗。
例如：We
fight
for
the
weak
against
the
strong.我们为弱者而战，反对强者。
3、作为介词，against后接的宾语有时可省略。
例如：
（1）We
have
saved
some
money
against
our
old
age.我们存了一些钱，以备老年之用。
（2）Our
defences
must
be
reinforced
against
attack.我们必须加强防御设施以抵御进攻。
扩展资料
近义词
1、versus
读音：英[ˈvɜːsəs]，美[ˈvɜːrsəs]。
释义：作为介词，（表示两队或双方对阵）对抗；（比较两种不同想法、选择等）与…相对。
例句：The
green
debate
tends
to
polarise
into
science-as-saviour versus science-as-devil camps.
有关环保的辩论往往会分化成“科学是救星”和“科学是恶魔”两个阵营。
2、oppose
读音：英[əˈpəʊz]，美[əˈpoʊz]。
释义：作为动词，反对（计划、政策等）；（在竞赛中）与…对垒。
例句：Mr
Taylor
was
not
bitter
towards
those
who
had opposed him.
泰勒先生对那些曾反对过他的人并未怀恨在心。
变形：
（1）第三人称单数：opposes；
（2）现在分词：opposing；
（3）过去式：opposed。
prep.（介词）
(1)
In a direction or course opposite to:
逆：与某个方向或过程相反：
row against the current.
逆水行舟
(2)
So as to come into forcible contact with:
对撞：为与…达成猛烈接触：
waves dashing against the shore.
拍岸的波涛
(3)
In contact with so as to rest or press on:
倚在；紧靠着：与…接触为了休息或按压：
leaned against the tree.
斜靠着树
(4)
In hostile opposition or resistance to:
反抗；抵抗：处于敌对状况或与…相抗衡：
struggle against fate.
同命运抗争
(5)
Contrary to; opposed to:
与…相反；对：
against my better judgment.
与我的判断相反
(6)
In contrast or comparison with the setting or background of:
对照；对比：以…的布景或背景相对比：
dark colors against a fair skin.
深色衬托出白皙的肌肤
(7)
In preparation for; in anticipation of:
预期；以备：为…作准备；期待着…：
food stored against winter.
为过冬贮备的食物
(8)
As a defense or safeguard from:
预防；防御：以…为防御或保护对象：
protection against the cold.
预防感冒
(9)
To the account or debt of:
兑换；提取：作为帐上的应收款项或作为…的借项：
drew a check against my bank balance.
开支票支取自己的银行结余
(10)
Directly opposite to; facing.
正对着；面向
语源
--------------------------------------------------------------------------------
(1)
Middle English
中古英语
(2)
alteration of againes
againes的变化
(3)
from Old English ongeagn
源自 古英语 ongeagn
现代英汉词典
--------------------------------------------------------------------------------
against
[E5^eInst, E5^enst]
prep.
(1)
相反；逆着
against the law
违法
We sailed against the wind.
我们逆风行船。
Drug taking is against the law.
吸毒是违法的。
(2)
反对
We won our match against that team.
我们在比赛中赢了那个队。
No one is against this proposal.
没有人反对这个提议。
(3)
靠着，依着
to lean against the wall
靠着墙
(4)
与…成对照
against a dark background
与黑色背景成对照
The picture looks better against the light wall.
这幅画挂在浅色的墙上显得更美。
(5)
防备；防御
against the cold
防冷
against a rainy day
防备雨天
We are all taking medicine against the flu.
我们都在服药预防流感。
(6)
以…相抵
income against expenditure
以收抵支
prep.（介词）
(1)
In
a
direction
or
course
opposite
to:
逆：与某个方向或过程相反：
row
against
the
current.
逆水行舟
(2)
So
as
to
come
into
forcible
contact
with:
对撞：为与…达成猛烈接触：
waves
dashing
against
the
shore.
拍岸的波涛
(3)
In
contact
with
so
as
to
rest
or
press
on:
倚在；紧靠着：与…接触为了休息或按压：
leaned
against
the
tree.
斜靠着树
(4)
In
hostile
opposition
or
resistance
to:
反抗；抵抗：处于敌对状况或与…相抗衡：
struggle
against
fate.
同命运抗争
(5)
Contrary
to;
opposed
to:
与…相反；对：
against
my
better
judgment.
与我的判断相反
(6)
In
contrast
or
comparison
with
the
setting
or
background
of:
对照；对比：以…的布景或背景相对比：
dark
colors
against
a
fair
skin.
深色衬托出白皙的肌肤
(7)
In
preparation
for;
in
anticipation
of:
预期；以备：为…作准备；期待着…：
food
stored
against
winter.
为过冬贮备的食物
(8)
As
a
defense
or
safeguard
from:
预防；防御：以…为防御或保护对象：
protection
against
the
cold.
预防感冒
(9)
To
the
account
or
debt
of:
兑换；提取：作为帐上的应收款项或作为…的借项：
drew
a
check
against
my
bank
balance.
开支票支取自己的银行结余
(10)
Directly
opposite
to;
facing.
正对着；面向
那句话的意思是：如果相反的，已投保的危险状况确实发生了，保险公司会对过失进行补偿。
那里的against就是相反的意思。
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