这道题里为什么选a having been canceled.不选had been canceled All fligh

来源：学生作业帮编辑：搜搜考试网作业帮分类：英语作业时间：2024/06/05 21:43:34

这道题里为什么选a having been canceled.不选had been canceled All flight___because of the...

这好像是被动主动那块的知识点吧那为什么要用having呢

此题考的是独立主格结构：名词\代词+不定式\分词\形容词\介词短语\名词.做此题时可遵循以下步骤：1、此句子为简单句,句中已有谓语动词had to do,另外动词需用非谓语动词形式.故排除B、D（B,D选项都是谓语动词形式,有时态和人称变化）.2、因为concel与主语they 没有主谓或动宾关系,所以必须用独立主格结构做状语.3、因为all flight 与concel 是动宾关系所以用被动形式,选A,排除.

这道题里为什么选a having been canceled.不选had been canceled All fligh All the flight having been canceled because of the snowstrom 请问All buses ((having been canceled)) because of the heavy sn 独立分词结构,All fligts having been canceled because of the snowst 英语翻译Dear Customer,Your purchase has been canceled and will n had been 和 Having been 区别? had been done & having been done 区别英语翻译being canceled 是class的形容词吗?如何理解正在进行为什么要用being canceled 定语从句的问题He found he was back ---he had been.A.where为什么选A,为什么不 we have had been having a lot of rain recently 用的是什么时态为什么这么 SHOULD BE CANCELED是什么意思 All the tickets having been sold out与As all the tickets had