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 is written and sung by the man over there . (was written and sung =was written and was sung 第二个was 省略了)
省略,指免去,除去。在一定条件下省去一个或多个句子成分;为了表达的简捷,省去话中可以省去的字句,有不说可明白时的省笔,有扼要概括的略写,具体分为蒙上省略、探下省略和语急省略。