Hill is not the only pupil who learns the Chinese language at school .这里面为什么要加who?
问题描述：
Hill is not the only pupil who learns the Chinese language at school .这里面为什么要加who?
答
因为这是一个定语从句,who learns the Chinese language at school作Hill is not the only pupil 的定语,who 是关系代词,意思是Hill不是学校唯一一个学汉语的学生.