Your speech was heard by a group of five judges,all of whom

Your speech was heard by a group of five judges是个被动语态结构,意思是 你的演讲会被一个5人组成的评委听取.all of whom agreed that it was the best one this year 这话里面是一个由whom引导到的定语从句,whom指的就是judges,意思也就是all of the five judges ,后面that引导一个agree的宾语从句,所以后面半句意思是5个评委都认为it（指的是your speech）是今年最好的.

all of whom agreed that it was the best one this year这个定语从句，用来修饰先行词judges

Your speech was heard by a group of five judges是个被动语态结构，意思是 你的演讲会被一个5人组成的评委听取。all of whom agreed that it was the best one this year 这话里面是一个由whom引导到的定语从句，whom指的就是judges，意思也就是all of the five judges ，后面t...