2. 外语
  3. ____________(所有的航班被取消)because of the snowstorm, many passengers could do nothing but take the train.

____________(所有的航班被取消)because of the snowstorm, many passengers could do nothing but take the train.

admin2010-10-14  67
问题 ____________(所有的航班被取消)because of the snowstorm, many passengers could do nothing but take the train.
选项
答案The flights having been canceled/All the flights having been canceled
解析 本题考查对分词独立主格结构以及分词的完成式的掌握。分词的独立主格结构是指：分词的逻辑主语与主句的主语不一致，而是带有自己独，立的逻辑主语。本句中分词的逻辑主语为航班，与取消之间很明显是被动关系，故应采用分词的被动式；而根据句意，分词表示的动作明显发生在主句谓语动词动作之前，故应采用分词的完成被动式。
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大学英语四级

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