请问有哪位英语高手帮我分析下这个句子嘛

请问有哪位英语高手帮我分析下这个句子嘛
Having little understanding of natural causes,it attributes both desirable and undesirable occurrences to supernatural or magical forces,and it searches for means to win the favor of these forces.
Having little understanding of natural causes是原因状语吗?
Perceiving an apparent connection between certain actions performed by the group and the result it desires,the group repeats,refines and formalizes those actions into fixed ceremonies,or rituals.
Perceiving是状语前置吗?这个句子的主语呢?
Perceiving an apparent connection between certain actions performed by the group and the result it desires是目的状语吗?performed by the group是action的定语对吗?这里performed是非谓语动词吗?