很多同学在学英语时都感觉语法困难，想要提高成绩，打好语法基础必不可少！新东方在线整理2025年6月大学英语四级语法考试知识点定语从句篇：同位语从句，供各位考生参考。
2025年6月大学英语四级语法考试知识点定语从句篇：同位语从句
同位语从句的概念
同位语从句是对名词进行讲解、说明或补充的从句。它与所修饰的名词在逻辑上是等同关系，一般由 that, what, whether, who 等引导。
同位语从句的容易见到种类及例句
1. 由 that 引导的同位语从句
that 在从句中不作成分，但不可以省略。
例句：
“The news that he won the game made us excited.”
“The fact that she didnt reply is disappointing.”
四六级考试知识点：在阅读理解中，that 引导的同位语从句常用于讲解名词的具体内容。比如：
“The discovery that the Earth is round changed our understanding of the universe.”
2. 由 what 引导的同位语从句
what 在从句中作主语、宾语或表语，表示“……的东西/事情”。
例句：
“The question what we should do next is still under discussion.”
“The idea what he proposed is very interesting.”
四六级考试知识点：在完形填空或语法选择题中，或许会考查 what 的使用方法。比如：
“The problem _____ we need to solve is time management.”
A. that
B. what
C. which
D. who
答案：B. what
3. 由 who/whom/whose 引导的同位语从句
这类连接代词在从句中分别作主语、宾语或定语。
例句：
“The person who called me yesterday is my old friend.”
“The winner, whom everyone expected to be the best, was announced.”
四六级考试知识点：在阅读理解中，或许会出现类似的结构，需要理解句子的逻辑关系。比如：
“The candidate who has the most experience will be hired.”
4. 由 whether 引导的同位语从句
whether 表示“是不是”，用于引导同位语从句时，一般不与 or not 连用。
例句：
“The doubt whether he will come is still unclear.”
“The question whether we should change the plan is under discussion.”
四六级考试知识点：在写作中，可以用 whether 来表达不确定性。比如：
“The debate whether climate change is caused by human activities is ongoing.”
5. 由 how/when/where/why 引导的同位语从句
这类连接副词在从句中作状语。
例句：
“The reason why he was late is that he missed the bus.”
“The question how we can solve the problem remains unanswered.”
四六级考试知识点：在完形填空或语法选择题中，或许会考查这类连接副词的使用方法。比如：
“The challenge _____ we face is time management.”
A. how
B. when
C. where
D. why
答案：D. why
同位语从句的容易见到名词
同位语从句常修饰以下名词：
fact, news, idea, belief, doubt, question, possibility, suggestion, evidence 等。
例句：
“The possibility that he will win the election is slim.”
“The suggestion that we should change the plan was accepted.”
四六级考试中的容易见到题型
1. 语法选择题
考查同位语从句的连接词选择。
例题：
“The news _____ he won the game made us excited.”
A. that
B. what
C. which
D. who
答案：A. that
2. 完形填空
考查同位语从句在上下文中的逻辑关系。
例题：
“The reason _____ he didnt come is that he was ill.”
A. why
B. when
C. where
D. how
答案：A. why
3. 写作
在写作中，可以用同位语从句来增强句子的多样性和复杂性。
例句：
“The fact that we have limited resources makes it difficult to complete the project on time.”
“The idea that technology can solve all problems is misleading.”
需要注意的地方
同位语从句与定语从句有什么区别
同位语从句：对名词进行讲解说明，从句与名词是等同关系。
定语从句：对名词进行修饰限制，从句与名词是修饰关系。
例句对比：
同位语从句：“The news that he won the game is exciting.”
定语从句：“The news that he told me is exciting.”
引导词 that 的用法
that 在同位语从句中不作成分，但不可以省略。
例句：“The belief that we can succeed encourages us.”
以上就是新东方在线大学英语四级语法频道给大伙收拾的“2025年6月大学英语四级语法考试知识点定语从句篇：同位语从句”内容，期望可以给大伙备考带来帮助。
