I motioned him to join us.是什么意思？

I motioned him to join us.

我示意他加入到我们的队伍中来。

motioned

vt. 打手势（motion的过去式与过去分词形式）；

例句
She motioned for the locked front doors to be opened...
她示意把锁着的前门打开。

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。

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。

join

vt.& vi. 连接，联结，加入，参加；vt. 结合，参与，上（火车、飞机等），上（路）；n. 连接，结合，接合处，接合点；

例句
I'd like to join an aerobics class to improve my fitness.
我想参加有氧运动训练班来增强体质。

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。