如何理解状语从句

## 学生提问 ## 老师，下面这句话我不太明白其中的句子成分划分，whereas后面那句lose为什么用ing形式，是动名词么？ The camel can lose up to 30 percent of its body weight as water without harm to itself, whereas human beings die after losing only 12 to 13 percent of their body weight. ## 权威解答 ## 句子成分划分： The camel [主] can lose up to [谓] 30 percent of its body weight [宾] as water without harm to itself, [状] whereas human beings [主] die [谓] after losing only 12 to 13 percent of their body weight.[状] 翻译：骆驼缺水的话体重会降低高达30%，但其身体不会收到损害，而人类体重如果降低12%-13%就会死亡。 whereas 在这句话中引导一个状语从句，after 在这里是介词，所以，后面的动词要为 ing 形式哈。 ## 知识点梳理 ## ### 状语从句 在主从复合句中，在句中作状语、起副词作用的句子，可以修饰谓语、非谓语动词、定语、状语或整个句子。 ① Sometimes we teach our children <u>the way our parents have taught us</u>. ② <u>No matter how hard he tried</u>, she could not change her mind.