六、定语从句和状语从句

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/whywhen/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)

  1. who指人,作主语The girl who sings well is my friend.
  2. whom指人,作宾语The man whom you saw is a doctor.
  3. whose表所属 “…… 的”,人 / 物都可用This is the house whose window is broken.
  4. which指物,作主 / 宾I love the book which you bought.
  5. 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

  1. where = in/on which修饰地点名词,This is the place where I studied.
  2. when = on/in which修饰时间名词,I remember the day when we met.
  3. why = for which只修饰reason,The reason why he left is clear.

4. 两大类型

  1. 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
  2. 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

  1. 先行词为最高级、序数词修饰
  2. 先行词是 all, everything, nothing 等不定代词
  3. 先行词同时包含人 + 物
  4. 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

  1. so + 形容词 / 副词 + thatHe isso shy thathe dare not speak.
  2. 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)

  1. 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
  2. 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
  3. 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

  1. 定语从句I still remember the daywhen we first met.(day 名词在前,修饰日子 → 定从)

  2. 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