大全98-8北美28，请牛牛帮忙

ahlong

28 Each chemical element is characterized to the number of protons that an atom of that element contains, called its atomic number.

问题：call its atomic number作何句子成分？修饰谁？

我用的CD语法大全，在这里谢谢啦。里面好像98年8月的重复一份卷子。

真老九

修饰the number

Each chemical element is characterized to the number of protons that an atom of that element contains, （which is）called its atomic number.

ahlong

谢谢真老九指点

"called its atomic number"过去分词短语作状语，its指代each chemical element,补全为"（which is）called its atomic number by people"?

对吗？

真老九

正确