帮忙分析这个句子的句子成分,是主语从句吗?主语不应该是He吗,为什么还是主语从句?His studies at the University of Chicago were concentrated on mathematics,astronomy,and philosophy,which earned him a bachelor of science degree in 1910.

主语：His studies；
谓语：earned；
宾语：him
这是一个主语从句， at the University of Chicago were concentrated on mathematics, astronomy, and philosophy这些可以看做定语，用于修饰主语his studies；
a bachelor of Science degree in 1910可以看做是宾语补足语；
真正的句子主干是：his studies earned him ；
个人理解，仅供参考哈

His studies at the University of Chicago were concentrated on mathematics, astronomy, and philosophy, which earned him a bachelor of science degree in 1910.
重点在要表达的earned这个词，才是全句的动词。Which之前的是个句子，做主语，所以算是主语从句。

（His studies at the University of Chicago主语）（ were concentrated on mathematics, astronomy, and philosophy系表结构）, （which earned him a bachelor of science degree in 1910定语从句,修饰主语）这里没主语从句,而是词组作主语.
祝你进步!.

不是主语从句，是定语从句，主语不是he，是His studies at the University of Chicago（他在芝加哥大学的学习），which引导定语从句，先行词是mathematics, astronomy, and philosophy，这些使得/帮助他在1910年获得理学学士学位。希望对你有帮助！