1.be known as,be known for,be known to,be known in辨析
(1)be known as作为……而著名，其后的名词表示一个人的身份、职业等。
Liu Huan is known as a singer.
(2)be known for因……而著名，其后所接内容表示某人或某物的特点、特长等。
Guilin is known for its beautiful mountains and rivers.
(3)be known to为……所了解/知道，其后接表示人的词语。
He is known to all in our village.
