All the flight having been canceled because of the snowstrom

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/11 18:37:14

All the flight having been canceled because of the snowstrom,we had to take the train instead.
为什么不能用 had been canceled

如果用had been canceled,那么这就是两句话,由于缺少了连接词and而有语法错误了.
原句说having been ...这是独立主格的结构,这里表示原因.
有问题请追加~
再问：这里having been canceled 是现在完成时吧？？？能不能用过去完成时
再答：不能，就这种语法来说，只能用独立主格+doing的形式。除非有hading这样的说法。。。
再问：现在分词的完成式被动语态:having been done 而过去分词只有一种形式done 如果可以的话可改成：all the flight canceled 谢谢我懂了

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