they的名词性物主代词是their.
theirdet.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
They worked hard to give their children a good start in life.
他们力争为孩子们奠定一个良好的基础。
The loss of their son brought the two of them together.
丧子使他们两人重归于好。
People often share their political views with their parents.
人常常跟自己的父母政治观点一致。
