六、定语从句和状语从句
定语从句 & 状语从句 最全对比精讲
一、核心本质总区分
表格
| 项目 | 定语从句(关系从句) | 状语从句 |
|---|---|---|
| 别名 | 关系从句、形容词性从句 | 副词性从句 |
| 作用 | 修饰前面的名词 / 代词 | 修饰主句动词、形容词、整句话 |
| 位置 | 紧跟被修饰名词后 | 句首 / 句中 / 句尾都可 |
| 前置标志 | 前面一定有名词先行词 | 前面无名词,直接接主句 |
| 翻译 | 译为:…… 的 | 按逻辑译:当…、因为…、如果…、虽然… |
| 引导词 | who/whom/whose/which/that/where/when/why | when/because/if/though/so that… |
第一部分:定语从句
1. 基本结构
先行词 + 关系词 + 从句先行词:被修饰的人 / 物名词关系词:在从句内充当成分
2. 关系代词(5 个)
- who指人,作主语The girl who sings well is my friend.
- whom指人,作宾语The man whom you saw is a doctor.
- whose表所属 “…… 的”,人 / 物都可用This is the house whose window is broken.
- which指物,作主 / 宾I love the book which you bought.
- that可指人 / 物,限制性从句专用,不作非限
省略规则(必考)
关系代词在从句中作宾语 → 可省略,但是,作主语 → 绝对不能省略,例:
- the action (that) they perform (宾,省)
- the man who helps me (主,不省)
3. 关系副词(3 个)= 介词 + which
- where = in/on which修饰地点名词,This is the place where I studied.
- when = on/in which修饰时间名词,I remember the day when we met.
- why = for which只修饰reason,The reason why he left is clear.
4. 两大类型
- 限制性定语从句(无逗号)不可删,删后句意残缺,日常最常用,可用 that
- 非限制性定语从句(前后加逗号)只补充信息,删掉不影响主句,禁用 that,多用 which/who
5. 只用 that 不用 which 场景
- 先行词为最高级、序数词修饰
- 先行词是 all, everything, nothing 等不定代词
- 先行词同时包含人 + 物
- 疑问句以 who/which 开头
6. 介词 + which 高级结构(写作加分)
- in which = where
- on which = when
- for which = why
- with which 用…
- from which 从…
第二部分:状语从句(完整版 9 大类)
总结构
从属连词 + 完整主谓从句 + 主句从句不修饰任何名词,只表逻辑关系
1. 时间状语从句
表动作发生的时间常用连词:when, while, as, before, after, since, until/till, as soon as
- when:当… 时(可瞬间 / 延续动作)I was readingwhen he came in.
- while:当… 时(只接延续性动作,常用进行时)While she was cooking, I cleaned the room.
- as:一边… 一边;随着As time goes by, we grow up.
- until:直到…Wait hereuntil the rain stops.
- as soon as:一… 就I’ll tell youas soon as I know.
2. 原因状语从句
表动作发生的缘由常用连词:because, since, as, now that
- because:语气最强,表直接原因,回答 whyHe stayed inbecause he was sick.
- since/as:既然、由于(显而易见的原因)Since you know it, I won’t repeat.
- now that:既然Now that you are free, help me.
3. 条件状语从句
表动作发生的前提条件常用连词:if, unless, as long as, on condition that
- if 如果If it is fine, we will go out.
- unless = if…not 除非You will failunless you work hard.
- as long as 只要You can succeedas long as you persist.
时态规则:主将从现主句将来时,从句用一般现在时表将来。
4. 让步状语从句
表转折,意为 “虽然、尽管”常用连词:though/although, even though, even if, while
- though/although 虽然(不能和 but 连用)Although he is young, he knows a lot.(错误:Although…but…)
- even though/even if 即使、纵然I will goeven if it snows.
5. 目的状语从句
表主句动作的目的常用连词:so that, in order that从句常搭配情态动词 can/could/may/might
- Speak loudlyso that everyone can hear you.
- He got up earlyin order that he could catch the bus.
6. 结果状语从句
表主句动作带来的结果常用连词:so…that… / such…that… / thus
- so + 形容词 / 副词 + thatHe isso shy thathe dare not speak.
- such + 名词短语 + thatIt issuch a good book thatI read twice.
7. 地点状语从句
表动作发生的地点 / 范围常用连词:where, wherever
- Plant treeswhere there is much sand.在风沙大的地方种树。
- Wherever you go, I will follow you.
8. 方式状语从句
表动作进行的方式常用连词:as, as if/though
- Doas I told you. 照我说的做。
- She talksas if she knew everything.
9. 比较状语从句
表两者对比常用连词:than, as…as, not so/as…as
- He runs fasterthan I do.
- She isas clever asher sister.
三、一秒快速分辨技巧(做题绝杀)
- 看前面有没有名词
- 有名词语境 → 大概率定语从句
- 无名词,直接连句子 →状语从句
- 看引导词作用
- 引导词在从句里做主 / 宾 / 定→ 定语从句
- 引导词只起连接逻辑,不充当成分 → 状语从句
- 翻译测试
- 能翻译成 “…… 的” → 定语
- 能翻译成 “当 / 因为 / 如果 / 虽然” → 状语
例句对比
定语从句I still remember the daywhen we first met.(day 名词在前,修饰日子 → 定从)
状语从句When we first met, I was very shy.(前面无名词,表时间 → 状从)
四、高频易错点汇总
- where 既可以引导定从也可以引导状从
- 定从:the factory where I work(修饰工厂)
- 状从:Where there is a will, there is a way.
- so that 目的 /so…that 结果不要混淆
- 定语从句宾格可省,主格绝对不可省
- 非限制性定语从句不用 that
- 让步状语从句 although 不和 but 连用
- 条件、时间状从一律主将从现
