the only one 做先行词指人,关系代词用什么?
He is the only one of the students who fails to pass the exam.先行词不是由the only 修饰时,关系代词不是只能用that么?答案为什么是who?
先行词不能是the students 因为后面跟的是fails，而且在此说的是只有他唯一的一个人没通过考试。