他们抓住了他，把他狠狠打了一顿。用英语怎么说？

他们抓住了他，把他狠狠打了一顿。

They caught him and gave him a violent beating.

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

caught

v. 赶上( catch的过去式和过去分词 )，接住，引起，看见；

例句
The men were caught in the act of digging up buried explosives.
那些人在挖掘掩埋的爆炸物时被逮个正着。

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。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

gave

v. 给予，赠送( give的过去式 )，（与名词连用描述某一动作，意义与该名词相应的动词相同），供给，交给；

例句
He gave a detailed account of what happened on the fateful night...
他详细描述了那个灾难性夜晚所发生的事。

violent

adj. 暴力引起的，剧烈的，（风，爆炸等）猛烈的，狂暴的，感情强烈的，颜色强烈的；

例句
He became violent and abusive toward Ben's mother...
他对本的妈妈动起粗来。

beating

n. 打，敲打，[纸] 打浆，脉搏，失败；vt. （心脏等）跳动(beat的现在分词)；

例句
...the acquittal of six police officers charged with beating a suspect...
对6名被控殴打嫌犯的警官作出的无罪判决