1:When the engineer found the machine stopped working, he stopped to check what was the matter with it.这是一个含时间状语从句的复合句,其中:he suopped to check what was the matter with it. 是主句,句子成分分析如下:He : 主语; stopped : 谓语;to check what was the matter with it : 宾语(不定式短语充当宾语)。what was the matter with it 又是一个宾语从句,其中:what 是主语; was the matter with it 是谓语部分(系表结构合成谓语)。When the engineer found the machine stopped working 是时间状语,句子成分分析如下:the engineer 是主语; found 是谓语;the machine 是宾语;stopped working 是宾补(分词短语充当宾补)。When the enginner found the machine stopped working,he suopped to check what was the matter with it.译文:当工程师发现机器停止工作时,他停下来检查机器出了什么问题。2: If food supplies the energy to children, knowledge provides the chance for the children to improve themselves and realize their dreams.译文:如果食物能给孩子们提供能量,知识就为孩子们提供了提升自己和实现梦想的机会。这是一个含让步状语从句的复合句,其中:knowledge provides the chance for the children to improve themselves and realize their dreams. 是主句,句子成分分析如下:knowledge 是主语; provides 是谓语;the chance 是宾语;for the children 是状语,表对象; to improve themselves and realize their dreams 是宾补(不定式短语充当宾补)。If food supplies the energy to children 是让步状语从句,句子成分分析如下:food 是主语; supplies 是谓语; the energy 是宾语; to children 是状语,表对象。