2026年6月英语四级第2套真题句子解析： Maintaining a healthy lifestyle in mid-life, decades before disease sets in, makes sense, said David Knopman, a fellow of the American Academy of Neurology, who was not involved in the study.

Maintaining a healthy lifestyle in mid-life, decades before disease sets in, makes sense, said David Knopman, a fellow of the American Academy of Neurology, who was not involved in the study.

主句的核心结构是 "Maintaining ... makes sense"。其中，"decades before disease sets in" 是嵌入前面动名词短语中的时间状语从句；主句后又插入了报告语 "said David Knopman"，并带有同位语 "a fellow of the American Academy of Neurology" 以及定语从句 "who was not involved in the study"。因此句中存在从句、非谓语和插入成分的层层嵌套，主干容易被打断。

Maintaining a healthy lifestyle in mid-life, decades before disease sets in, makes sense

主句的真正主语是句首较长的动名词短语 "Maintaining a healthy lifestyle in mid-life"，其中还插入了时间状语从句 "decades before disease sets in"；谓语 "makes sense" 被推迟到整个长前置主语之后。读者需要先处理较长的主语和嵌入从句，才能找到主句谓语，因此构成主干后移。

said David Knopman, a fellow of the American Academy of Neurology, who was not involved in the study

"said David Knopman" 是置于主句中间的报告语，说明前面的观点是谁说的。若暂时移除该部分，主干 "Maintaining ... makes sense" 仍然完整；因此它是用逗号插入主句的附加成分。其后的 "a fellow ..." 是 David Knopman 的同位语，"who was not involved ..." 是修饰 David Knopman 的定语从句。

makes sense

"make sense" 是固定搭配，表示“有道理、讲得通、明智”。其中 "make" 是轻动词，核心意义由名词 "sense" 承担，通常不需要介词："make sense"。

本句中，动名词短语 "Maintaining a healthy lifestyle in mid-life, decades before disease sets in" 作主语，"makes sense" 作谓语，表示“在疾病发生前几十年保持健康的生活方式是明智的”。

注意区分："make sense" 表示“有道理、讲得通”；"make sense of + 名词" 表示“理解、弄懂某事”，例如 "make sense of the data"。