個人覺得never before have so many countries....和never before have so many countries....before.在意義上差別不大,只是由於never before後面的主語和述語過長,如果把never和before 分開的話,顯得有點兒怪怪的,如果主語和述語簡短一些則二者都可,如 Never before has Tom eaten a pizza和 Never has Tom eaten a pizza before就幾乎可在保證意義不太變化的情況下相互替換。