be well-known to sb. 为某人所熟知be well-known for sth. 因为什么而出名be well-known as sth. 作为什么而出名就这三个用法。例:Jay Chou is well-known to the younth.周杰伦为年轻人们所熟知。Jay Chou is well-known as a singer.周杰伦是作为一名歌手而出名。Jay Chou is well-known for his songs.周杰伦是因为他的歌而出名。楼上提到的by就是个典型错误,按正常被大家知道理解,被动该用by连接,但是known 这个词特殊,它后面用to连接,所以这