there appeared on the horizon a man on horseback ,riding in

there appeared on the horizon a man on horseback ,riding in my direction

there 引导词 appeared谓语动词 on the horizon状语 a man on horseback主语 ,riding in my direction伴随状语
由于副词there开头,引起了句子的倒装.
再问： there在此算地点状语吗 riding in my direction是伴随状语？我觉得是方式状语
再答： 性质分词短语大多是做伴随状语、时间状语及后置定语的；若是方式状语的话，它的前面不会有逗号，要和前面的谓语动词更为靠近才对。