英语中被动语态中be动词可省略的常见情况：1、过去分词作后置定语时be 可省略。

如The boy called Tom is my friend .= The boy who is called Tom is my friend .那个名字叫汤姆的男孩是我的朋友。

2、作并列谓语时后面动词的被动词语态中的be 常省略。如The song iswritten and sungby the man over there . （was written and sung =was written and was sung 第二个was 省略了）这道歌是那边那个人写和唱的。