英语语法分析Thisappliesparticularlytochemicalindustries,wherechancediscoveriesplayamuchlargerpartthantheydoinphysicalandmechanicalindustries.这句话playamuchlargerpart中的playapart做什么成分,修饰什么的

Question

英语语法分析
This applies particularly to chemical industries, where chance discoveries play a much larger part than they do in physical and mechanical industries.
这句话play a much larger part中的play a part做什么成分,修饰什么的

Answer 1

This applies particularly to chemical industries,where （chance discoveries play a much larger part than they do in physical and mechanical industries）.
chance discoveries 偶然的发现
where引导的定语从句,在那个地方………………
chance discoveries（主语） play a much larger part than they do in physical and mechanical industries
play a much larger part中的play a part做整句话的谓语宾语部分