be known for, be known as, be known to
　　be known for 以……出了名 (通常不是指同位的關系)
　　be known as 作為……出了名 (通常加上職業名詞，表同位關系)
　　be known to 為……所知
　　Japan is known for its cars. 　　日本以它的汽車而聞名。
　　Luxun is known as a writer. 　　魯迅作為作家很出名。
　　As is known to all, China has four famous invitations. 　　眾所周知，中國有四大著名的發明。