be famous as作为.而著名
be famous for因.而著名
be famous to在.（的人群）中著名
Jin yong is famous as a writer.
金庸是著名的作家.
Jin yong is famous for his books.
金庸因他的书而著名.
Jin yong is famous to young people.
金庸在年轻人中很著名.
当然以上用法中,famous也可用known / well-known替换.