请问以下这句话为什么不用被动语态?All things considered,the planned trip had to be called off.
问题描述：
请问以下这句话为什么不用被动语态?All things considered,the planned trip had to be called off.
为什么不用be considered?
答
All things considered 是过去分词的独立结构,= All things were considered
从句是be动词结构的话,be经常可省略,过去分词本身就是表示被动的意思,如果be considered就是谓语了,两个句子又没有并列词,又不是从句主句,不符合语法规定,所以前一句用了分词的独立结构