know someone when

短语

词形变化

knew someone when knows someone when 三单 knowing someone when 现在分词 knew someone when 过去式 known someone when 过去式 known someone when 过去分词

释义与例句

v.
  1. 1.

    To have known a famous person before he or she was famous.

    1915, "Interesting People: Charles Bullard: A Famous Photographer of Cats", in "The American Magazine" His friends thought him crazy, as friends always think when a man has an original idea and acts on it. Now, when his friends speak of him they invariably add, "I knew him when—"

词源

From the formulaic phrase by which speakers begin reminiscence of now-famous persons.

来源：wiktionary