英语语法问题,anainst的用法

因为这里是介词,是介宾搭配
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

口语用法，习惯，如，Me too.....than me 歌词用口语因素很多。