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学员疑问：When confronted with these exaggerations, some of us say that they are for a good cause, and surely there is no harm done if the result is that we focus even more on tackling climate change. 这个句子中， when confronted这部分是什么？感觉句子结构不完整。
老师解答：这是一个when引导的状语从句的省略情况。状语从句的主语和主句主语一致的时候，从句可以简化，省略（主语+be动词）。以上这个句子补全还原则是When they are (=some of us are) confronted with these exaggerations, some of us say that they are for a good cause, and surely there is no harm done if the result is that we focus even more on tackling climate change.其实这是一个很普遍的现象，可以使得句子变得简练而避免机械重复。
点评分析：能发现When confronted with these exaggerations这个从句似乎有问题，说明看句子有结合语法来断句，只是对于状语从句的省略估计不太了解。建议可以查阅相关语法知识点，多看具体的例子，理解消化，以后自己写句子的时候也可以应用起来。
