Ⅰ. (be) famous as “以(某种身份)……出名(著名)”as后跟人宾语往往与主语同位。如：
① She is famous as a poet. 他以一名诗人而著名。
② The town is famous as a car-making place. 该城镇以制造汽车而闻名。
Ⅱ. (be) famouse for “困……而闻名(驰名)”表示由于某种特征而出名，for后的宾语一般为主语人从属内容。如：
① China has been famous for its silk. 中国素以丝绸闻名。
② This city is famous for its big gambling resort. 该市因其大赌场而驰名。