In sum,polygam is not,as so frequently indicated,unviersally a result of human immorality.It is simply not true,in this aspect of culture as in many others,that people who follow patterns of culture deemed immoral in our society are thereby lacking in morality.本人英语比较菜，希望各位朋友能详细帮我讲解分析下句子结构。不甚感激啊！
in sum,polygam is not universally a result of human immorality.it is simply not true that people deemed immoral in our society are thereby lacking in morality.总之，polygam不是人类无道德的普遍的一个结果。人们认为在道德之下我们的社会无德现象由此而变少这完全是不真实的。这是两个主句。其中第二个句子that people deemed immoral in our society are thereby lacking in morality是同位语从句做了true的同位语。immoral i
