练习的时候他们陪着他。用英语怎么说？

练习的时候他们陪着他。

They accompanied him during his exercise periods.

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。

accompanied

v. 陪伴( accompany的过去式和过去分词 )，陪同，伴随…同时发生，伴奏；

例句
She was accompanied by her younger brother...
她由弟弟陪着。

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。

during

prep. 在…的时候，在…期间，当…之时，其间；

例句
...the accrual of funds used during construction.
建设过程中资金的累积

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。

exercise

n. 练习，运动，训练，运用；vi. 锻炼，训练，练习；vt. 锻炼（身体某部位），使焦虑，使忧虑，实行，发挥（作用），运用；

例句
This was not an academic exercise — soldiers' lives were at risk...
这不是纸上演习——士兵的生命受到了威胁。

periods

n. 周期，时期( period的名词复数 )，（一段）时间，学时，句号；

例句
There were periods of sulking, of pronounced distance, of coldness.
沉闷、明显不友好和冷淡的场面多次出现。