toward与towards是什么用法?

toward与towards是什么用法?
他们是什么词性？？？？

toward
[tE5wC:d]
prep.
向,对于,为了
adj.
有希望的,有利的,逼近的,温顺的
toward
to.ward
AHD:[tôrd,t½rd,t…-wôrd“]
D.J.[t%8rd,tourd,t*6w%8rd]
K.K.[t%rd,tord,t*6w%rd]
prep.also （介词）也作
towards
AHD:[tôrdz,t½rdz,t…-wôrdz“]
In the direction of:
朝着…的方向：
driving toward home.
朝着回家的方向行驶
In a position facing:
面对：处于面对…的位置：
had his back toward me.
把他的背对着我
Somewhat before in time:
将近：在时间上比…稍前：
It began to rain toward morning.
快到早晨的时候天开始下雨了
With regard to; in relation to:
关于…；和…有关：
an optimistic attitude toward the future.
对未来的乐观态度
In furtherance or partial fulfillment of:
进一步：促进或部分完成：
contributed five dollars toward the bill.
又还了五美元的债务
By way of achieving; with a view to:
达成：意在达到；以…为目标：
efforts toward peace.
为了和平所做的努力
adj.（形容词）
AHD:[tôrd,t½rd]
Favoring success or a good outcome; propitious.
成功有望的：有利于成功或好的结果的；吉祥的
Often towards Happening soon; imminent.
常作 towards 很快发生的；在即的
Obsolete Being quick to understand or learn.
【废语】 很快理解或学会的
Middle English
中古英语
from Old English t½d
源自 古英语 t½d
t½} [to] * see to
t½} [前往] *参见 to
-weard [-ward]
-weard [问…的]
Some critics have tried to discern a semantic distinction between toward and towards,but the difference is entirely dialectal.Toward is more common in American English; towards is the predominant form in British English.
有些批评家试图明确分辨出toward 与 towards 之间的语义差别,但这种差异完全是方言性的.Toward 在美式英语中更常见,而在英国英语中towards 是主要形式
toward
[tE5wC:d]
prep.
= towards