She was well known an excellent dancer.
A.as B.for C.by D.to
She was well known an excellent dancer.
A.as B.for C.by D.to
A
be known as意思是“作为……而出名”；be known for“因……而闻名”；be known by“凭……而出名”；be known to“为……所知”，此处意思为“她作为一位优秀的舞蹈家而出名”。