妮句子本身有错误theirs已经等于their house所以theirs后面不能再加house.这是1个并列句,用and 连接分开来看这里地点状语做宾语成分...主 谓 宾house is heretheirs is there
主语our house,theirs谓语is,is宾语here,there我想句子中应该中their,而不用theirs
主语 our house theirs house 谓语 is宾语here