定语从句三要素口诀英语，超级实用的英语语法口诀，帮你轻松掌握定语从句用法

定语从句三要素口诀英语

口诀：

关系词，引导词，修饰词；

先行词，被修饰，很重要；

定从句，修饰词，不可少；

定从句，限范围，要记牢。

详细解释：

1. 关系词：关系词是连接主句和从句的桥梁，常见的有关系代词（如that, which, who, whom, whose等）和关系副词（如when, where, why等）。

2. 引导词：引导词用来引导定语从句，常见的引导词有that, which, who, whom, whose, as等。

3. 修饰词：定语从句的修饰词是用来修饰先行词的，它可以是形容词、名词或代词等。

4. 先行词：先行词是被定语从句修饰的词，它可以是名词、代词或整个句子。

5. 定从句：定语从句是修饰先行词的从句，它限定了先行词的范围，提供了更多关于先行词的信息。

例句解析：

1. The man who broke the window is my friend.

关系词：who

引导词：who

修饰词：broke the window

先行词：The man

定从句：who broke the window

2. The book that I bought yesterday is very interesting.

关系词：that

引导词：that

修饰词：I bought yesterday

先行词：The book

定从句：I bought yesterday

3. The reason why he came late was because of the traffic jam.

关系词：why

引导词：why

修饰词：was because of the traffic jam

先行词：The reason

定从句：he came late

应用与练习：

1. 选择正确的关系词完成句子

The person (whom) you are looking for is in the office.

The school (that) we visited last week is very beautiful.

2. 将简单句改为定语从句

He is my friend. -> He is the person who sits next to me.

I bought a book yesterday. -> The book that I bought yesterday is very interesting.

3. 分析定语从句

The girl who is wearing a red dress is my sister.

+ 关系词：who

+ 引导词：who

+ 修饰词：is wearing a red dress

+ 先行词：The girl

+ 定从句：is wearing a red dress

The house which is located on the seashore is very expensive.

+ 关系词：which

+ 引导词：which

+ 修饰词：is located on the seashore

+ 先行词：The house

+ 定从句：is located on the seashore

通过掌握这个口诀并进行练习，你将会发现定语从句并不再是英语学习的难点，而是提升英语表达能力的有力工具。记住，多练习、多应用，你的英语语法水平将会得到显著提高。