be known to/by

【问】He soon made a name for himself and came to be known to the Italians as Giovanni Acuto.(New Concept English，Book 3，L.14)

像He's known to everyone as a good actor.这样的句子里的is known to是很容易理解的，因为这里的is known to表达的是静态，而在我提问的句子里came to be known表达的是动态，为什么这里仍然用介词to，而不用介词by呢?

【答】 应当记住，人们把be known (to)看成是形容词结构，在与come to连用时，亦是如此。

1. He's known to the police (as a criminal). (LDCE)

警察都知道他(是个罪犯)。

2. Mr Jones has been known to me for several years... (CIE)

我认识琼斯先生已有好几年了……

虽然be known to是最常见的结构，但是也有人使用be known by结构，由by引出施动者：

1. I don’t think he’s known to(or by) anybody here.(Palmer)

我认为这里谁也不认识他。

2. That man is known by(or to) Jim. (Platt)

吉姆认识那个男人。

3. He lives alone，in poverty scarcely，known by his neighbours. (Maugham)他几乎不被邻人所知，穷苦孤单地生活着。