独立分词结构“名词+分词”作状语:
All fights having been canceled because of the snowstorm, we decided to take the train.
黑体部分为何不是直接 canceled?
独立分词结构“名词+分词”作状语:
All fights having been canceled because of the snowstorm, we decided to take the train.
=Afterall flights had been cancalled because of the snowstor, we decided to take the train
参考译文：在所有航班因暴风雪全部取消了之后，所以大家决定乘坐火车。
黑体部分为何不是直接 canceled?
A:名词/代词+having been done = B:after +名词/代词+had been done sthAll fights having been canceled because of the snowstorm, we decided to take the train.
=After all flights had been cancalled because of the snowstor, we decided to take the train（强调主句动作发生的时间,且在主句谓语动词动作之前发生。）
All fights having been canceled , we decided to take the train.
=After all flights had been cancalled , we decided to take the train.（强调主句动作发生的时间,且在主句谓语动词动作之前发生。）
=Because/As all flights had been cancalled , we decided to take the train.（强调主句动作发生是什么原因，且在主句谓语动词动作之前发生。）
