this is one of the best films中的先行词为什么是films,而不是one?

this is one of the best films中的先行词为什么是films,而不是one? 1.This is the one of the best films _______.2.This is one of this is one of the best films that have been shown this year This is one of the best films _______. A. that have been sho kung fu panda is one of the best films--made me so intereste hero is one of the best films made by zhangyimou that i have this is the one of the most interesting films ______ _______ This film is one of_____(exciting)films this year 英语 This is the only one df the films ( )really interesting A （Every one of the films） we have（ shown） this year （has been Pirates of the Caribbean is one of ___ films that I have eve This is one of the best films_____