英语语法

Question

The man living in the next door is known ( B )the police
A with B to C by D of
为什么用B?know to do sth 是什么意思?

Answer 1

be known to sb 这是个固定用法，为某人所熟知，这边的to是介词，后面直接跟名词。
living in the next door是修饰the man的，表示居住在隔壁的男人是警察们都认识的。
know to do sth 就直接是指动词和动词之间加不定式，知道去做某事

下面为know的词组，供你参考：
know about 了解，知道…的情况
know from 区分
know of 听说过，知道（有…）
be known as 被称为，是有名的
be known for 因…而出名
be known to all 众所周知
As is known to sb. , 句子
It is known to sb. that-句子
What is known to sb. is that-句子

Answer 2

living in the next door 是用来修饰这个“the man”的。
be known to the police，是指被警察know。这里是个被动的语态。
这样说，你能理解不？