But perhaps the most unforgettable person I (will) ever know is my English teacher. 这句说的是：这位英语老师可能会成为我今后认识人中最难忘的一个或者But perhaps the most unforgettable person I (have) ever known is my English teacher. 这句是说曾经认识的人中，这位英语老师是最难忘的 如果你是刚开始学习定语从句，就是省略了连词But perhaps the most unforgettable person (that) I ever know is my E
