his的复数表达方式为their。his作为形容词性物主代词，中文含义有“他的”、“属于他的”、“上帝的”；而their作为his的复数表达方式，中文含义有“他们的”、“她们的”、“它们的”。
一、his的中文含义及用法介绍
his作为代词，意思有他的;上帝的;属于上帝的；属于他的。例句有：
1、He doesn't like to talk about his private life.
他不愿谈及他的私生活。
2、His quality of life has improved dramatically since the operation.
手术后他的生活质量大大改善了。
3、He's an expert at getting his own way.
他在如何达到自己的目的方面很在行。
4、He will make his debut for the first team this week.
本周他将在第一支出场的队伍中首次亮相。
5、He took a job to finance his stay in Germany.
他找了一份工作以赚钱支付在德国的费用。
6、His height was a decided advantage in the job.
干这项工作，他的身高是明显优势。
7、His research work was attacked by animal rights activists.
他的研究受到了动物权益维护者的抨击。
二、their的中文含义及用法介绍
their意思有他们的;她们的;它们的;在提及性别不详的人时，用以代替his或her。例句有：
1、Their parties are always fun.
他们的聚会总是乐趣横生。
2、If anyone calls, ask for their number so I can call them back.
如有人打电话来，问问电话号码，这样我可以回电话。
3、Make sure you get a good look at their faces.
你一定要仔细看清他们的面孔。
4、Within three days they had exhausted their supply of food.
他们在三天之内就把所有粮食吃光了。
5、People often share their political views with their parents.
人常常跟自己的父母政治观点一致。
