名词与限定词
A noun phrase names a person, thing, place, idea or quantity. Its internal order tells the listener which entity is meant and how much information belongs to it.
01 · 概念基础
先理解术语，再应用规则
以下术语指向不同的语法对象，应比较其功能与例句，而非只记翻译。
noun/naʊn/
danh từA word that names an entity, substance, event, quality or idea.
coast, water, analysis, uncertainty
bờ biển, nước, sự phân tích, độ bất định
determiner/dɪˈtɜːmɪnə/
từ hạn địnhA function word placed before a noun to identify, quantify or limit its reference.
the model, a station, these results, each survey
mô hình đó, một trạm, những kết quả này, mỗi đợt khảo sát
noun phrase/ˈnaʊn freɪz/
cụm danh từA phrase built around a head noun and functioning as a subject, object or complement.
the two newly calibrated sensors
hai cảm biến vừa được hiệu chỉnh
head noun/hed naʊn/
danh từ trung tâmThe noun that controls the basic meaning and grammatical number of the whole noun phrase.
The quality of the measurements is high. Head: quality
Chất lượng của các phép đo cao. Trung tâm: quality
countability/ˌkaʊntəˈbɪləti/
khả năng đếmThe grammatical distinction between meanings that can be counted as separate units and meanings treated as an undivided mass or concept.
two surveys; useful information
hai khảo sát; thông tin hữu ích
article/ˈɑːtɪkəl/
mạo từA central determiner that marks a noun phrase as indefinite, identifiable or generic through a/an, the or zero article.
a model; the model; models
một mô hình; mô hình đã xác định; các mô hình nói chung
quantifier/ˈkwɒntɪfaɪə/
từ định lượngA determiner-like expression that specifies amount, number or distribution.
many stations; little evidence; each result
nhiều trạm; ít bằng chứng; mỗi kết quả
完整课程范围
不要停留在单一公式
普通、专有、具体、抽象与集合名词
可数性、单复数与不规则复数
冠词、指示词、所有限定词与分配限定词
名词短语顺序、中心名词与一致关系
判断边界：限定词系统不是词汇清单；选择取决于可数性、定指性、数以及语篇指称。
02 · 控制规则
先判断名词义项属于单数可数、复数可数还是不可数，再选择一个相容的中心限定词并围绕中心名词组织修饰语；一致关系取决于中心词，而非最近的名词。
Predet + Central Det + Number + Adj/N modifier + HEAD + PP/relative clause名词、限定词与完整名词短语
按意义和可数性分类名词，选择相容的限定词，确定中心名词，并构造无一致错误的扩展名词短语。
1. 名词可以指称什么
名词不只指实体物品，还可表示人物、地点、物质、事件、过程、性质和抽象概念。其语法行为很大程度取决于当前义项是否可数。
meaning → countability → number → determiner → head noun单数可数名词通常需要限定词：a station, the station, this station, each station。
不可数名词通常没有复数 -s，也不能与 a/an 连用：information, equipment, research, advice。
有些名词会随意义改变可数性：glass（材料）/ a glass（杯子）；experience（经验）/ an experience（一次经历）。
用量词结构计数不可数名词：a piece of advice, two items of equipment, three sets of data。
The survey produced useful information about shoreline change.
该调查提供了有关岸线变化的有用信息。
Two experiences during the field campaign changed our sampling plan.
野外工作期间的两次经历改变了我们的采样计划。
可数性决策表
应判断语境中的义项，而非只看词典词头。
| 类型 | 相容形式 | 例子 |
|---|---|---|
| 单数可数 | a/an, the, this, each, every | a station; each result |
| 复数可数 | the, these, many, few, several | these stations; several results |
| 不可数 | the, this, much, little, some, no | some evidence; little equipment |
| 双重用法 | 取决于意义 | experience / an experience; paper / a paper |
名词短语槽位
多数短语只使用部分槽位，不要强行填满所有位置。
| 槽位 | 功能 | 例子 |
|---|---|---|
| 前限定词 | 整体/分量 | all, both, half |
| 中心限定词 | 识别/所属 | the, a, this, my |
| 后限定词 | 数量/顺序 | three, first, many |
| 前置修饰语 | 描述/分类 | recent coastal monitoring |
| 中心词 | 核心意义与一致 | stations |
| 后置修饰语 | 限定说明 | near the estuary; that failed |
高风险错误对比
information 不可数，因此删除 a/an。useful 以辅音音素 /j/ 开头，但 a/an 的选择只在后接单数可数中心名词时相关。
the 与 my 争夺同一中心限定词槽位。
each 要求单数可数名词和单数谓语。
quality 是单数中心名词；measurements 位于 of 短语内部。
概念与形式检测
在语境中应用该系统
为 IELTS Task 1 趋势写两句：先用 a/an 引入一个变化，再用 the 回指。至少使用一个可识别中心词的扩展名词短语。
- ✓中心名词控制数与一致。
- ✓限定词与可数性和语篇状态相符。
- ✓后置修饰语明确依附于目标中心词。
Noun phrase architecture lab
通过控制每个位置构建名词短语
中心名词决定核心意义和数；限定词、数量词与修饰语按可检验顺序限定或扩展指代。
the two newly calibrated stations recorded similar values.
整个名词短语作主语；中心名词控制与动词的单复数一致。
03 · 解析示例
同时观察形式、功能与意义
All three coastal monitoring stations reported a similar trend.
Cả ba trạm quan trắc ven biển đều báo cáo xu hướng tương tự.
The recent increase in salinity requires further investigation.
Mức tăng độ mặn gần đây cần được nghiên cứu thêm.
The survey produced useful information about shoreline change.
Khảo sát tạo ra thông tin hữu ích về biến đổi đường bờ.
A numerical model was developed, and the model was calibrated against observations.
Một mô hình số được xây dựng, rồi mô hình đó được hiệu chỉnh theo dữ liệu quan trắc.
04 · 高风险错误对比
说明错误原因，而非只选正确答案
The quality of the measurements are high.
The quality of the measurements is high.
quality 是主语名词短语的单数中心词；measurements 位于 of 短语中，不控制谓语。
05 · 掌握检测
完成课程前先应用规则
哪个句子符合目标语法系统？
哪个描述最能定义“noun”？
哪个例句属于本课已验证的目标结构？
哪个结构公式属于本课？
完成四项检测，然后提交自拟句以获得目标结构反馈。
06 · IELTS Academic
将语法迁移到真实交际任务
在学术写作中使用扩展但可读的名词短语来封装趋势与类别，例如：a marked rise in the number of coastal households affected by flooding。
区分可数、不可数和双重用法。
从新信息、可识别信息或泛指角度解释冠词选择。
确定中心词并选择正确的谓语数。
构造同时包含前置与后置修饰的名词短语。