They called James .为什么call 后面要加ed,

They called James .为什么call 后面要加ed, She is a giril called .为什么call要加ed whats this called in english?为什么CALL 要加ED? called 为什么要加ed? what is she called?在这call为什么加ed be called的called 为什么要加ed The boy called Tom 为什么called要加ed? I have a good desk mate called lucy.句子中的call为什么要加ed呢,又不是过去时 为什么有些英语单词后面要加ed 动词后面为什么加ed 为什么英语后面加d或ed 为什么feel后面加动词ed形式?