walk to his home 是正确的表达
还有walk home 中的home是副词,即"到家"
walk to his house中house是名词,一般指一栋小屋或个人别墅.
没有walk house这个说法,因为house不能做副词
与home类似做副词的还有"there那里,here这里,everywhere到处,wherever不论哪里"
如:go there,come here,swim everywhere,
You can go wherever you like.
你想到哪都行.