He has always insisted on his being called Dr.Turner.中的his是怎

eing called Dr.Turner
被当成了1个名词
名词前面是能够家所属关系的形容词
his apple
也可以
his being called Dr.Turner
他老坚持别人该称呼他为Turner博士.
He has always insisted on being called Dr.Turner
也可以不填his
再问： insist on 后面不能加宾格？
再答： insist on doing sth