be known by 与be known to的区别？（这个词汇辨析快把我弄疯了...）

Question

如题所述

Answer 1

be known by 和 be known to 表面上看都有 “被知道”， “被称”之意，
但我们可以这样理解两者之间的区别：
be known by = 凭。。。而知，凭。。。而被称为
be known to = 为。。。所知

两个词汇的区别可以从例子看到：
John is known by his nickname "Big Nose"
一般人是以约翰的昵称 “大鼻子” 称呼他的。
We're known by the company we keep
见其交往而知其品格 （略有“近朱者赤近墨者黑”之意）
A bird is known by its note , and a man by his talk
闻其歌知其鸟，听其言知其人

The trouble maker is known to the police
捣乱者是警察所熟知的人

Answer 2

be known as 什么样的名人 She is known as a singer.
be known for 因什么而出名 She is known for her great voice.
be known to 做什么出名 He is known to eat a lot.
be known by 在什么人中有名 He is known by his classmates as a singer.

Answer 3

be known to sb