be known for 常常接名词，很少接动名词。不可以接to do 不定式
for 是因为sthto 是+对象He is known/famous for his works.他因他的作品而出名。He is known/famous to the word.他闻名于世界
①be known for
用法：因...闻名。
例句：
Get to France， see world to be known for the Ai non-Er iron pagoda.到法国，看看世界闻名埃非尔铁塔。
②.be known to
用法：为...所知。
例句：
Whatever lay beyond would not be known to me.不管死后怎样我都不会知道了。
