2016年12月英语六级第2套真题句子解析： "While we argue phasing out racial terminology(术语) in the biological sciences, we also acknowledge that using race as a political or social category to study racism, although filled with lots of challenges, remains necessary given our need to understand how structural inequities and discrimination produce health disparities(差异) between groups." Yudell said.

that using race as a political or social category to study racism, although filled with lots of challenges, remains necessary given our need to understand how structural inequities and discrimination produce health disparities(差异) between groups

该结构存在多层嵌套：1) 最外层是 "acknowledge" 的宾语从句 "that using race... remains necessary..."；2) 该宾语从句的主语是动名词短语 "using race..."，其中包含不定式 "to study racism" 作目的状语；3) 宾语从句中嵌套 "given our need to understand..."，其中 "to understand" 后又嵌套疑问词从句 "how structural inequities... produce health disparities..."。共三层以上嵌套，包含从句套从句（宾语从句套疑问词从句）和从句套非谓语（宾语从句包含动名词和不定式）。

using race as a political or social category to study racism, although filled with lots of challenges, remains necessary

主语 "using race as a political or social category to study racism" 与谓语 "remains necessary" 之间被插入语 "although filled with lots of challenges" 分隔。动名词主语较长（含目的状语修饰），中间插入让步从句，使得主谓结构被拉开，增加了句子理解难度。

to study racism

"to study racism" 是不定式短语，作目的状语，说明 "using race as a political or social category" 的目的是为了研究种族主义。不定式短语紧跟在其修饰的名词短语之后，表达行为的目的。

although filled with lots of challenges

"although filled with lots of challenges" 是让步从句的省略形式（省略了主语 "it is"），由逗号标示插入在主句 "using race... remains necessary" 中间，打断了主干 "using race... remains necessary"。该插入成分可以移除而不影响主句的完整性。

although filled with lots of challenges

"although filled with lots of challenges" 是让步状语从句的省略形式，完整形式应为 "although it is filled with lots of challenges"，省略了从句主语 "it" 和系动词 "is"。这种省略在状语从句中很常见，当从句主语与主句主语一致或为形式主语时，可省略主语和 be 动词。

filled with lots of challenges

"filled with lots of challenges" 是过去分词短语，作后置定语修饰 "using race as a political or social category to study racism" 这一动名词短语，表示被动含义（被充满挑战）。过去分词短语与其修饰的名词性成分之间存在逗号分隔，构成非限制性后置定语或插入性修饰。

to understand how structural inequities and discrimination produce health disparities(差异) between groups

"to understand how structural inequities and discrimination produce health disparities between groups" 是不定式短语，作目的状语，说明 "remains necessary" 的原因或目的（given our need 引出的是我们的需求，即理解的目的）。不定式短语中嵌套了疑问词引导的名词性从句作 "understand" 的宾语。

While we argue phasing out racial terminology(术语) in the biological sciencesalthough filled with lots of challenges

本句包含两个对比/让步连词的叠加使用，展现了复杂论述中的多层逻辑关系。

第一处 "While" 引导时间/对比状语从句，表示 "在我们主张...的同时"，连接两个并存但有张力的立场：一方面主张淘汰种族术语，另一方面承认仍需使用种族分类来研究种族主义。这里 "while" 的核心功能是对比(而)，强调两个行为的同时性和对立性。

第二处 "although" 嵌套在主句的宾语从句内部，引导让步状语 "although filled with lots of challenges"，修饰 "using race as a political or social category"。这是典型的让步用法，承认困难但不改变主要立场。

识别要点："While" 引导的从句若能替换为 "whereas" 且语义通顺，通常是对比义；若强调时间同步但无对立，则是时间义。本句中 "While we argue X" 与后文 "we also acknowledge Y" 通过 "also" 形成明确的对比关系，确认为对比用法。

"Although" 后接形容词短语 "filled with lots of challenges" 是让步状语的省略形式，完整形式为 "although it is filled with..."。这种省略在主从句主语一致时很常见。

filled with lots of challenges

"be filled with" 是 "be + 过去分词 + with" 结构的典型代表，表示 "充满/装满某物" 的状态。

核心辨析点："filled" 是 "fill"(填充/充满)的过去分词，作为状态形容词使用。"with" 引入的是充满的内容。本句中 "filled with lots of challenges" 表示 "充满许多挑战"，challenges 是填充的内容。

本句中该结构出现在让步状语从句内部，采用了省略形式：完整形式应为 "although (using race...) is filled with lots of challenges"，省略了主语和 be 动词，保留 "filled with" 核心结构。这种省略不影响固定搭配的识别。

记忆要点："be filled with" 强调被动的充满状态，主语是容器或承载者。近义搭配 "be full of" 也表示充满，但 "full" 是形容词原形而非分词，语体上 "be filled with" 更正式。

与假阳性的区分：若句中是 "fill sth with sth"(主动填充)，则不属于本标志；本标志要求 be 动词 + filled 的被动状态结构。