定语从句 只用that

问题描述:

定语从句 只用that
The first man who talks to me will receive a surprising present.
我在语法书中看到的
这句话对吗?
不是说出现序数词就用that吗?

如果先行词前有序数词,形容词的*修饰的话,就用that
例如:
This is the first book that he has read.
Tom is the first student that I have taught.