一、定语从句核心例句(分类整理)
1. 关系代词引导的定语从句
who(指人,作主语或宾语)
The boy who helped you is my neighbour.(作主语)
The girl who I met at the party is beautiful.(作宾语,可省略)
whom(指人,作宾语,可替换为who或省略)
She is the girl whom I sent the present to.
which(指物,作主语或宾语)
The book which you bought is interesting.(作宾语,可省略)
The car which is red belongs to my friend.(作主语)
that(指人或物,可替代who/whom/which)
This is the best speech that I have heard.(先行词含最高级)
The man that you saw is my boss.(作宾语,可省略)
whose(表所属关系,修饰人或物)
The old lady whose daughters are teachers is our neighbour.
The house whose windows are broken needs repair.(=the windows of which)
2. 关系副词引导的定语从句
when(表时间,先行词如day, year)
I remember the day when we first met.
where(表地点,先行词如place, city)
Beijing is the place where I was born.
why(表原因,先行词为reason)
This is the reason why he refused.
3. 特殊结构
介词+关系代词
The house in which I lived is old.(=where I lived)
The topic in which I’m interested is climate change.
非限制性定语从句(补充说明,用逗号隔开)
His book, which was lost, has been found.
二、定语从句思维导图框架
1. 核心结构
定语从句
├─ 关系词
│ ├─ 关系代词:who, whom, which, that, whose
│ └─ 关系副词:when, where, why
├─ 限制性 vs 非限制性
│ ├─ 限制性:无逗号,修饰限定(删去影响句意)
│ └─ 非限制性:有逗号,补充说明(删去不影响句意)
└─ 特殊规则
├─ 只能用that:序数词、最高级、不定代词(all, nothing等)
├─ 介词+关系代词:which/whom不可省略(如in which)
└─ 省略关系词:作宾语时可省略(如The book (that) I read)

2. 思维导图分支示例
关系代词选择
指人:who(主/宾)、whom(宾)、whose(定语)
指物:which(主/宾)、that(主/宾)
混合:that(人+物)
关系副词选择
时间:when(先行词为time, day等)
地点:where(先行词为place, city等)
原因:why(先行词为reason)
易错点
区分关系代词与副词:
The reason why/for which he left is unknown.
The house where/in which I lived is old.
三、学习资源推荐
1. 例句来源:网页1、12、39提供了丰富的例句及翻译。
2. 思维导图制作:参考网页25、67的框架设计,结合分类与规则整理。
3. 练习题:网页33、37包含专项练习及答案解析。

如需进一步学习,可访问相关网页查看完整内容。