1. It's also true of children who suffer for years in foster homes because of parents who can't or won't care for them but refuse to give up custody rights. (2003. 阅读. Text 4)

　　【译文】这同样也符合那些多年来在收养家庭受苦的儿童，他们的养父母不能或是不愿关心他们，却拒绝放弃监护权。

　　【析句】复合句。主句用固定句型It's also true of children, 后面是起修饰作用的从句。who suffer for years in foster homes作children的定语从句，because of parents是原因状语，最后又是who引导定语从句修饰parents。

　　2. Kimberly has been the object of an angry custody baffle between the man who raised her and her biological parents, with whom she has never lived. (2003. 阅读. Text 4)

　　【译文】金伯莉被卷入了监护权的激烈争夺中，一边是抚养她长大的养父，一边是她从未生活在一起过的亲身父母。

　　【析句】复合句。主句Kimberly has been the object of an angry custody baffle between the man and her biological parents,在the man后who raised her作定语从句，her biological parents后with whom she has never lived同样也是定语从句。

　　3. Medical tests showed that the child wasn't the Twiggs' own daughter, but Kimt only was, thus sparking a custody battle with Robert Mays. (2003. 阅读. Text 4)

　　【译文】医学测试表明这孩子不是Twigg的女儿，而Kimt才是，这样就引发了与Robert May争夺监护权之战。

　　【析句】复合句。主句Medical tests showed that+宾语从句。宾语从句中，主句是the child wasn't the Twiggs's own daughter, but Kimt only was。thus sparking a custody battle……为现在分词引导结果状语。