e famous for意为“因为…而出名”,后接出名的原因,如：
Now York is famous for its high buildings.纽约以高楼大厦而闻名.
He is famous for his novels.他因他的小说而出名.
be famous as 作为…而出名,前面的主语和后面的名词意思一致
如：Lu Xun was famous as a writer.鲁迅是位著名的作家.
Hangzhou is famous as a tourist place.杭州是一个旅游胜地.
be famous for 后接宾语是主语的所属内容,be famous as后接宾语是主语的同位成分.