他无助地看着母亲痛苦地死去。用英语怎么说？

他无助地看着母亲痛苦地死去。

He watched helplessly as his mother died an agonizing death.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

watched

vt. 注视，注意（watch的过去式与过去分词形式）；

例句
He watched Karl run across the street to Tommy.
他看着卡尔向街对面的汤米跑去。

helplessly

adv. 无力地，无助地，无可奈何地，眼睁睁；

例句
He watched helplessly as his mother died an agonizing death...
他无助地看着母亲痛苦地死去。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

mother

n. 母亲，妈妈，女修道院院长，大娘；vt. 像母亲般地照顾，养育，溺爱；

例句
I felt I had adjusted to the idea of being a mother very well...
我感到自己已经完全接受了当妈妈的想法。

died

v. 死亡，枯萎（ die的过去式和过去分词 ），死时处于（某种状态）或具有（某种身份）；adj. 死亡的，消逝的；

例句
Both of them died in abject poverty...
他们两人都于穷困潦倒中死去。

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；

例句
He started eating an apple...
他开始吃苹果。

agonizing

adj. 痛苦难忍的，使人苦恼的；v. 使极度痛苦，折磨(agonize的ing形式)；

例句
Perhaps he was agonizing over the moral issues involved...
也许他正在为其中牵扯的道德问题而伤脑筋。

death

n. 死亡，（某种）死法，死亡方式，病危，死神；

例句
The following year Parliament voted to abolish the death penalty for murder...
议会于翌年表决对谋杀罪废除死刑。