英语句子理解

问题描述:

英语句子理解
Dorothea Dix,was known for her work to improve mental institutions,served as superintendent of nurses during the American Civil War.
was known for 能改成be known for吗,这里是做什么语?考察的是什么知识点,

was known for不可以改成be known for
在句子里作谓语
served as应该做的是非谓语 因为是被动 所以要用过去分词形式可是was known也不对啊,这是一个改错题。是吧was known该成known