很多留学生写 Dissertation 最卡的地方不是主体章节，而是 Introduction（引言）——因为它要在第一章就回答"这篇论文是什么、为什么重要、研究什么"，但在你真正完成论文之前，你其实还不完全知道答案。
本文提供一个通用框架，告诉你 Dissertation Introduction 应该包含什么、每部分怎么写，并给出可以直接改写的英文模板。
为什么 Introduction 这么难写？
三个核心原因：
- 要在最开头展示全局视野：读者还没看过你的论文，你需要用 Introduction 说服他们"这个研究值得读"
- 要精确定位 Research Gap：既要表明已有研究的存在，又要解释为什么还不够
- 通常最后才定稿：很多高年级学生会在写完其他章节后回来重写 Introduction
Dissertation Introduction 的七层结构
| 层次 | 英文名称 | 功能 | 建议字数（5000字论文） |
|---|---|---|---|
| 1 | Hook / Opening | 吸引读者，建立重要性 | 50–100 字 |
| 2 | Background | 研究背景和领域介绍 | 200–400 字 |
| 3 | Problem Statement | 当前问题/现象的具体描述 | 150–250 字 |
| 4 | Research Gap | 现有研究的不足 | 150–250 字 |
| 5 | Research Aim & Questions | 本研究的目标和具体问题 | 100–200 字 |
| 6 | Significance | 研究意义（学术+实践） | 100–150 字 |
| 7 | Chapter Outline | 各章节简介 | 100–200 字 |
总字数参考：Dissertation Introduction 通常占论文总字数的 8–12%。
第一层：Hook / Opening
目的：在第一段就建立研究的重要性，吸引读者读下去。
常见开头类型
类型 A：统计数据/现象
"By 2030, over 1.5 billion people worldwide will experience water stress, with climate change projected to reduce freshwater availability by up to 20% in arid regions (IPCC, 2023). Against this backdrop, sustainable water management has emerged as one of the most pressing challenges of the 21st century."
类型 B：悖论或矛盾
"Despite decades of corporate social responsibility (CSR) initiatives and billions of dollars in annual spending, income inequality in OECD countries has continued to widen since the 1990s (OECD, 2022). This paradox raises fundamental questions about whether CSR represents genuine systemic change or merely symbolic action."
类型 C：争议性观点
"The relationship between foreign direct investment (FDI) and economic growth in developing countries remains one of the most contested issues in international economics, with empirical evidence yielding conflicting conclusions across different contexts and time periods."
避免的开头：
- ❌ "In this dissertation, I will..."（太直白，缺乏学术感）
- ❌ "Since the dawn of time..."（太宽泛）
- ❌ "According to the dictionary, X means..."（陈腐）
第二层：Background
简要介绍研究领域的发展背景，说明这个主题在学术上和现实中的重要性。
模板：
"The field of [topic] has garnered increasing scholarly attention since [timeframe/event], particularly following [key development]. Scholars such as [Author A (Year)] and [Author B (Year)] have examined [aspect 1] and [aspect 2], establishing the theoretical foundations for understanding [broader phenomenon]. In [country/context], [specific development] has further heightened the relevance of this issue, with [statistic/policy] illustrating the scale of the challenge."
注意：Background 不是 Literature Review——它是给读者定位的"地图"，而不是系统的文献综述。保持简洁，2–3 段为宜。
第三层：Problem Statement
从宏观背景聚焦到你的具体研究问题。
模板：
"Despite the growing body of research on [broad topic], [specific aspect] remains poorly understood. In [context/setting], [problem] has resulted in [consequence 1] and [consequence 2], with [evidence of severity]. Existing approaches to [addressing the problem] have proven insufficient because [reason 1] and [reason 2]."
写 Problem Statement 的技巧：
- 从宏观到微观：先说大背景，再缩小到你的具体问题
- 用数据量化问题的严重性
- 说明为什么这个问题"现在"需要被解决
第四层：Research Gap（最难写的部分）
这是 Introduction 中最关键也最难写的部分。你需要：
- 承认已有研究的贡献
- 精确指出它们的不足
常用 Gap 语言表达
指出研究不足：
- "However, few studies have examined..."
- "While previous research has focused on X, the relationship between X and Y remains unexplored."
- "The existing literature has predominantly relied on [method/context], limiting the generalisability of findings to [your setting]."
- "To date, no study has investigated [specific question] in [specific context/period]."
承认已有贡献同时引出 gap：
"Although [Author A (Year)] and [Author B (Year)] have made significant contributions to understanding [topic], their analyses were conducted in [different context/earlier period] and did not account for [factor]. Moreover, [existing studies] have primarily employed [quantitative/qualitative] methods, neglecting the [qualitative/quantitative] dimensions of [phenomenon]. This study addresses these gaps by [your contribution]."
第五层：Research Aim & Questions
清晰、可衡量的研究目标和问题。
格式：
"This dissertation aims to [broad aim]. Specifically, it seeks to address the following research questions:
- To what extent does [variable A] influence [variable B] in [context]?
- What factors moderate/mediate the relationship between [A] and [B]?
- How do [stakeholders] perceive [phenomenon]?"
Research Questions 的好坏标准：
- ✅ 具体、可回答（Answerable）
- ✅ 有争议性（Debatable，不能是明显的是/否问题）
- ✅ 和你的 Gap 直接对应
- ❌ 太宽泛："What is the impact of globalisation?"
- ❌ 问事实："When was [event]?"
第六层：Significance
为什么这个研究重要？分两个维度写：
学术意义：
"This study makes several theoretical contributions. First, it extends [theory] by applying it to [new context]. Second, it addresses the methodological limitation of [previous approach] by employing [your approach]. The findings are expected to advance understanding of [phenomenon] in [field]."
实践意义：
"Beyond theoretical contributions, this research has practical implications for [practitioners/policymakers/organisations]. The findings may inform [specific application], helping [stakeholders] to [concrete benefit]."
第七层：Chapter Outline
最后用 1–2 段简要介绍各章节内容。
模板：
"The remainder of this dissertation is structured as follows. Chapter 2 presents a critical review of the existing literature on [topic], establishing the theoretical framework for this study. Chapter 3 outlines the research methodology, including [data collection method] and [analysis approach]. Chapter 4 presents the findings from [empirical work]. Chapter 5 discusses these findings in relation to existing theory and the research questions. Finally, Chapter 6 concludes by summarising the key contributions, acknowledging limitations, and suggesting directions for future research."
完整 Introduction 示例框架（可改写版）
[HOOK: 1-2 sentences with striking statistic/paradox/debate]
[BACKGROUND: 2-3 paragraphs tracing the evolution of the field,
citing 4-6 key scholars/reports]
[PROBLEM STATEMENT: 1-2 paragraphs narrowing to your specific issue,
with evidence of its severity/importance]
[RESEARCH GAP: 1-2 paragraphs acknowledging existing work +
identifying what's missing using gap language]
[RESEARCH AIM: 1 sentence stating broad aim]
[RESEARCH QUESTIONS: numbered list, 2-4 questions]
[SIGNIFICANCE: 2-3 sentences on academic + practical importance]
[CHAPTER OUTLINE: 1 paragraph describing each chapter in 1 sentence]
常见失分原因
| 问题 | 描述 | 解决方案 |
|---|---|---|
| Gap 不清晰 | 说了很多研究但没说"但是还不够" | 在每个文献群后明确说 "However..." |
| Research Questions 太宽 | "What is the impact of..." | 加上 specific context/variable/timeframe |
| Background 变成 Literature Review | 用大段引用替代了背景叙述 | Background 只需要"地图"，不需要全面综述 |
| 缺少 Significance | 只说"这个很重要"但没说为什么 | 分学术+实践两个维度，各1-2句 |
| 第一段太无聊 | "This paper discusses..." | 用数据/矛盾/问题作为开头 |
何时写 Introduction？
建议顺序：
- 先写 Literature Review 和 Methodology
- 完成一半主体章节后写 Introduction 草稿
- 全文完成后重写/修订 Introduction
Introduction 是"最后写但最先读"的章节——在你真正知道自己在研究什么之前，很难写好它。
需要辅导？
如果你卡在 Dissertation 的 Introduction，或者导师说你的 Research Gap "not convincing enough"，我们有专门的 Dissertation 辅导服务，包括逐段反馈和结构改写建议。
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