and she is a good friend of them all

Question

分析句子成分：He is a good teacher,and he is a good friend of them all.all 的成分
He likes his students.He is a good teacher,and he is a good friend of them all.
最后的ALL是什么成分 可省么?
THANK
这个 all 还可以用别的词代么

Answer 1

all做them的同位语,强调是他们全部的朋友,去了也可以,就是语气没有那么强的.要表示全部做同位语的话就不能被别的词替代了.