一位富商为他做了保证人。用英语怎么说？

一位富商为他做了保证人。

A wealthy businessman has stood bail for him.

wealthy

adj. 富有的，充分的；n. 富人，有钱人，阔人；

例句
In those days, only quite wealthy families had baths of their own.
那时候，只有非常富有的家庭才有自己的浴缸。

businessman

n. 商人，实业家；

例句
...a businessman who began by selling golf shirts from the boot of his car...
靠他的汽车后备箱练摊兜售高尔夫球衫起家的商人

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

stood

v. 坐落( stand的过去式和过去分词 )，维持原状，停着，处于某种状态；

例句
We stood in the doorway until our eyes adjusted...
我们站在门口直到眼睛适应了光线的变化。

bail

n. [法律]保释金，保释人，保释，[板球]三柱门上的横木，（马厩的）栅栏；vt. 保释，帮助脱离困境，将（财物）委托给…，往外舀水；

例句
He was freed on bail pending an appeal...
他被取保候审。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。