it的形容词性物主代词是its。
形容词性物主代词在句中只能用作定语，并可与形容词own连用表示强调。
1)用作定语。如：
Everybody must do his work well. 人人都应该把自己的工作做好。
She turned away her eyes. 她把她的目光移开。
Their ideals had changed. 他们的理想变了。
注意下面句中须用表身体所有的或随身携带的物主代词，不可省去，这与汉语不同：
Steyne rose up, grinding his teeth, pale, and with fury in his looks. 斯坦站起身来，咬牙切齿，脸色苍白，满脸怒气。
He raised his hat as the lady approached. 当那位妇人走近时，他举帽致意。
2)与own连用表示强调。如：
I saw it with my own eyes. 那是我亲眼看见的。
Every cook praises his own broth. 每个厨师都夸自己的汤好。
Mind your own business! 不管你的事!
如进一步强调则可加very。如：
I’d love to have my very own room. 我喜欢有一个完全属于我自己的房间。
I have nothing of my own. 我自己一无所有。
这种结构还可以与of连用。如：
The Pollaks had no children of their own. 波拉克夫妇自己没有孩子。
希望我能帮助你解疑释惑。
温馨提示：答案为网友推荐，仅供参考