主格：they

宾格：them（动宾、介宾用法）

形容词性物主代词：their

名词性物主代词：theirs =their+名词 扩展资料

一、they

pron.她们；他/她/它们；人们

例句：They may be able to help with childcare.他们可以帮忙照料孩子.

二、them

pron.他们；它们；她们

例句：We cannot boss them into doing more 我们不能再差遣他们做更多的事了.

三、their

pron.他（她，它）们的；在提及性别不详的.人时，用以代替 him 或 her

例句：Horses were poking their heads over their stall doors. 马儿们从马厩门上探出头来.