第十四章 名词从句

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      一、名词从句核心定义

      名词从句(Noun Clauses)是复句中充当名词使用的从属从句,需通过连接词/关系词引导,嵌入主要从句的名词位置(主词、宾语、补语等),功能等同于名词短语。

      二、复句与名词从句的关系

      复句由主要从句(可独立成句)和从属从句(依赖主要从句)构成,名词从句是从属从句的一种,扮演名词角色,对比示例:

      • 单句(名词短语作宾语):I saw the mirror.

      • 复句(名词从句作宾语):I saw that the mirror was broken.

      三、名词从句的分类与构造

      1. 来自陈述句(Declarative Sentence)

      • 构造方法:陈述句前加无意义连接词 that(表“那件事/那句话”),直接转化为名词从句。

      • 示例:

        • 陈述句:He didn’t take the money.

        • 名词从句:that he didn’t take the money

        • 复合句:I believe that he didn’t take the money.

      2. 来自疑问句(Interrogative Sentence)

      (1)Information Question(含疑问词)

      • 构造方法:疑问词(who/which/what/when 等)直接充当连接词,拿掉问号,还原动词顺序(疑问词非主词时)。

      • 示例:

        • 疑问句:What happened at his party?(疑问词为主词,无需调整语序)

        • 名词从句:what happened at his party

        • 复合句:I never asked him what happened at his party.

        • 疑问句:Where did he keep the money?(疑问词为副词,还原语序)

        • 名词从句:where he kept the money

        • 复合句:He never revealed where he kept the money.

      (2)Yes/No Question(无疑问词)

      • 构造方法:加连接词whether/if(表“是否”),拿掉问号,还原动词顺序。

      • 示例:

        • 疑问句:Is it going to rain soon?

        • 名词从句:whether it is going to rain soon(or not 可省略)

        • 复合句:By looking at the sky, I can tell whether it is going to rain.

      • 注意:句首位置、介系词后只能用 whether,不能用 if。

      四、名词从句的核心位置(嵌入主要从句的名词角色)

      1. 主词位置

      • 特点:that 从句作主词时,that不可省略;避免头重脚轻可⽤虚字 it 暂代,从句后移。

      • 示例:

        • 直接作主词:That he didn’t show up on time is strange.

        • 虚字 it 暂代:It is strange (that) he didn’t show up on time.(后移后 that 可省)

      • wh-从句示例:Where he is hiding now is a big mystery.

      2. 动词的宾语位置

      • 特点:that 从句作宾语时,that可省略;S+V+O+C 句型中,用虚字 it 暂代宾语,从句后移。

      • 示例:

        • 直接作宾语:The defendant said (that) he didn’t do it.

        • 虚字 it 暂代:I find it strange (that) he didn’t show up.

      • wh-从句示例:He explained why he had bought so much stock.

      3. 补语位置(主词补语)

      • 特点:that 从句作补语时,that可省略(句子不复杂时)。

      • 示例:

        • that 从句:The important thing is (that) we are all right.

        • wh-从句:The question is whether we can do anything about it.

      4. 同位格位置(补充说明先行词)

      • 特点:修饰名词(先行词),that可省略(句子不复杂时);部分情况为“不明顯同位格”(省略空洞名词+介系词)。

      • 示例:

        • 直接同位格:The story (that) he once killed a man might be true.

        • 不明顯同位格:I am afraid (that) I can’t help you.(省略 of that thing)

      5. 介系词的宾语位置

      • 规则:that 从句不可直接使用;wh-从句可直接充当介系词宾语。

      • 示例:

        • wh-从句:My response depends on what he really meant.

        • that 从句替代方案:His response dwells on the fact (that) I owe him a favor.(that 从句作 fact 的同位格)

      五、特殊用法

      1. 评注从句(Comment Clause)

      • 定义:无实质意义,仅作语气补充(如 you know, I suppose),用逗点与主要从句隔开。

      • 示例:This trick, you know, will never work.

      2. 引用句(Direct/Indirect Speech)

      • 间接引用:去掉引号,引用内容转化为名词从句,注意时态一致;可将从句移首加强语气,动词可倒裝。

      • 示例:

        • 直接引用:The guard said, “The road is closed.”

        • 间接引用:The guard said (that) the road was closed.

        • 倒裝强调:“The road is closed,” said the guard.

      六、核心要点总结

      1. 构造逻辑:陈述句加 that,疑问句按类型加 whether/if 或保留疑问词。

      2. 位置限制:that 从句不可作介系词宾语,wh-从句无此限制。

      1. that 省略:主词位置不可省,宾语、补语、同位格位置可省(句子不复杂时)。

      2. 虚字用法:主词、宾语位置可⽤ it 暂代,避免头重脚轻。