人们饲养奶牛来为我们提供牛奶.用英语怎么说？

人们饲养奶牛来为我们提供牛奶.

Cows were domesticated to provide us with milk.

cows

n. 母牛( cow的名词复数 )，雌象，婆娘，娘儿们；

例句
When his cows calve each year he keeps one or two calves for his family.
他的母牛每年产犊时,他都给自家留上一两头。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

domesticated

adj. 喜欢家庭生活的，（指动物）被驯养了的；v. 驯化( domesticate的过去式和过去分词 )；

例句
We domesticated the dog to help us with hunting.
我们驯狗来帮我们打猎。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

provide

vt.& vi. 提供，供给，供应；vt. 规定，提供(+for)，装备，预备；vi. 抚养，赡养(+for)，做准备，预约(for 或 against)；

例句
The government will provide temporary accommodation for up to three thousand people...
政府将给多达3,000人提供临时住处。

us

pron. 我们；

例句
Shakespeare has accustomed us to a mixture of humor and tragedy in the same play.
莎士比亚让我们习见了同一场戏目中的悲喜交错。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

milk

n. 奶，乳液，母乳；vt. 挤奶，榨取；

例句
Soya milk can cause allergic reactions in some children.
有些孩子会对豆浆过敏。