名词短语(Noun Phrase)内部语法全景:名词分类、可数性陷阱、单复数变化、限定词体系与冠词选择逻辑、代词格与指代、主谓一致三大原则。本篇是 英语语法体系总览 词法部分的单篇展开,体系索引见 语法 MOC。
名词分类
分类沿两个正交维度展开:
| 维度 | 类别 | 特征 | 例 |
|---|---|---|---|
| 专有 / 普通 | 专有名词 Proper Noun | 首字母大写,零冠词 | London, Einstein |
| 普通名词 Common Noun | 可加限定词 | city, man | |
| 可数 / 不可数 | 可数名词 Countable | 有单复数对立,可加 a/number | a book / two books |
| 不可数名词 Uncountable | 无复数,接单数谓语 | water, information |
普通名词再分个体(chair)、集体(team)、物质(gold)、抽象(freedom)四小类。可数性并非名词的固有属性,而是由语境中的意义决定——paper 指”纸”时不可数,指”论文、报纸”时可数。
可数性陷阱
以下高频词在中文里可数(“一条建议""两台设备”),英语中恒为不可数,加 -s 即是典型中式英语:
advice、information、equipment、furniture、luggage、progress、homework、evidence、research、software、traffic、news(形式带 -s 但恒单数)
计数需借助单位词:a piece of advice、an item of equipment、a bit of progress。❌ advices / equipments / furnitures。
其余陷阱三类:
| 类型 | 词 | 说明 |
|---|---|---|
| 单复数同形 | sheep, fish, species, series, means, aircraft | 谓语数由限定词与语境决定:this species lives vs these species live |
| 只有复数形式 | scissors, trousers, sunglasses; physics, economics | 剪刀类配 a pair of ... is;学科名接单数谓语,但 statistics 表”统计数据”时可数 |
| 双重身份 | paper, glass, work, hair, time, coffee | work(工作,不可数)vs works(著作、工厂);coffee(物质)vs a coffee(一杯);hair(整体)vs a hair(一根) |
单复数变化
规则变化(-s/-es/-ies)不再赘述,重点是不规则与外来复数。
不规则复数核心集:man→men、foot→feet、tooth→teeth、goose→geese、mouse→mice、child→children、ox→oxen、person→people(persons 限法律、公示语体)。
拉丁 / 希腊复数是学术与科技写作的常客:
| 规则 | 单数 → 复数 | 例 |
|---|---|---|
| -us → -i | alumnus → alumni | fungus → fungi |
| -um → -a | datum → data | medium → media |
| -on → -a(希腊) | criterion → criteria | phenomenon → phenomena |
| -is → -es | analysis → analyses | crisis → crises, thesis → theses, basis → bases |
| -a → -ae | formula → formulae(美式常 formulas) | antenna → antennae |
| 其他 | corpus → corpora | index → indices, appendix → appendices |
趋势注记:the data is / the media is 在当代英语中已普遍,正式学术写作仍倾向保持复数待遇。复合名词的复数落在核心词上:passers-by、sons-in-law、editors-in-chief。
限定词体系
限定词(Determiners)位于名词短语最前端、形容词之前:the three big rooms。冠词、物主、指示三类互斥——❌ the my book。
| 类别 | 成员 |
|---|---|
| 冠词 Articles | a / an / the |
| 指示词 Demonstratives | this / that / these / those |
| 物主限定词 Possessive determiners | my / your / his / her / its / our / their |
| 疑问与关系限定词 | what / which / whose |
| 量词 Quantifiers | some / any / no / every / each / all / most / many / much / (a) few / (a) little / several |
量词与可数性的搭配是硬约束:
| 限定语境 | + 可数复数 | + 不可数 |
|---|---|---|
| 仅可数 | many books, few/a few errors, fewer | ✗ |
| 仅不可数 | ✗ | much water, little/a little progress, less |
| 两可 | a lot of / plenty of / some / any / enough | 同左 |
few / little 带否定意味(“没多少”),a few / a little 中性偏肯定(“还有一些”)。less 限不可数、fewer 限可数;超市 10 items or less 属惯用容忍,正式写作仍应 fewer than 10 items。数以百计 / 数以千计的 hundreds of / thousands of 详见 数量。
冠词选择逻辑
a / an 的选择看读音不看拼写:an hour、an MBA、an X-ray;a university、a European、a one-way street。
a / an / the / 零冠词四选一的决策序列:
- 特指(双方共知、回指前文、语境唯一)→
the:the sun、I saw a dog; the dog barked - 泛指且为单数可数 →
a / an:A triangle has three sides - 泛指且为不可数或复数 → 零冠词:
Water boils at 100°C、Dogs are loyal - 专有名词默认零冠词;例外加
the:江河海洋(the Yangtze)、山脉群岛(the Alps,the Philippines)、复数形国名(the Netherlands)、机构(the UN)、形容词类指(the rich) - 零冠词固定域:三餐(
have lunch)、球类运动(play basketball)、交通方式(by bus)、语言与学科
代词格与指代
人称代词的格系统一览:
| 人称 | 主格 | 宾格 | 物主限定词 | 名词性物主代词 | 反身代词 |
|---|---|---|---|---|---|
| 一单 | I | me | my | mine | myself |
| 三单 | he / she / it | him / her / it | his / her / its | his / hers / its | himself / herself / itself |
| 一复 / 二 / 三复 | we / you / they | us / you / them | our / your / their | ours / yours / theirs | ourselves / yourselves / themselves |
要点:
- 物主限定词(
my,后接名词)不同于物主代词(mine,独立使用);its是物主限定词,it's是it is缩写。 - 反身代词三用:真反身宾语(
He hurt himself)、强调同位语(The CEO herself replied)、固定搭配(by oneself独自、enjoy oneself)。 - 格的分布:主语位与补语位用主格,动词与介词宾语用宾格;
than/as之后口语用宾格(taller than me),正式语体用主格(than I (am))。 - 指代一致:
everyone / each / nobody形式单数,传统配his or her;当代英语广泛接受 singular they(Everyone forgot their umbrella.)。 it兼任形式主语与形式宾语(I find it hard to explain),是长句中剥离主干的关键信号。- 疑问与关系代词
who / whom / which / that的选择及名词性从句用法见 三大从句。
代词回指是长难句粘连的主要手段,先找指代再切修饰,见 长难句拆解方法论。
主谓一致
三条原则按优先级套用:
| 原则 | 机制 | 例 |
|---|---|---|
| 语法一致 Grammatical Concord | 默认:主语形式单数→单数谓语 | The list is long |
| 意义一致 Notional Concord | 按语义定数:police / people / cattle 恒复数 | The police have arrived |
| 就近原则 Proximity | 谓语与最近名词一致:or / nor / either...or / neither...nor / not only...but also / there be | Neither the teacher nor the students were told |
集合名词走意义一致:强调整体用单数,强调成员用复数(英式偏复数 the team are arguing,美式偏单数 the team is arguing)。
高频陷阱清单:
| 结构 | 谓语 | 例 |
|---|---|---|
and 连接同一概念 | 单数 | Bread and butter is my breakfast |
each / every / either / neither 修饰主语 | 单数 | Every student has a laptop |
one of + 复数 + who/that | 复数(who 回指复数名词) | one of the students who study abroad |
the only one of + 复数 + who/that | 单数 | the only one who studies abroad |
a number of + 复数 | 复数 | A number of errors were found |
the number of + 复数 | 单数 | The number of errors is small |
| 主语带介词短语 / 定语从句 | 随核心名词 | The books on the shelf are mine |
| 非谓语或从句作主语 | 单数 | Reading books is fun, What he said is true |
分数 / 百分比 / some / all / most of | 随 of 后名词 | Half the water is gone vs Half the books are gone |
主谓一致最终落点在谓语动词的形态变化上,与时态系统交织,参见 动词与时态。