It introduces:
the research by situating it (by giving background), presenting the research problem , and saying how and why this problem will be solved , explaining why the research is being done. which is crucial for the reader to understand the significance of the study.
为读者提供总体的背景信息
与第1、2句的做法一样，但是更具体
描述了所研究领域的一般性问题或当 前的研究焦点
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(5) provides a transition 提供了总体问题领域到文献综述之间 between the general problem 的一个过渡 area and the literature review (6) provides a brief overview of key research projects in this area. (7) describes a gap in the research (8) describes the paper itself (9) gives details about the methodology (10) announces the findings 概述了此研究领域重要的研究项目
3.How Should I Start?

In order to help you write the
introduction to your own research, the model you build must answer the following three questions:
You may want to start your introduction
by describing the problem you are trying to solve, or the aim of your work, but as you will see when you examine published work, this is not how most research papers begin — and therefore it is not the best way for you to begin.
How do writers normally start the introduction? What type of information should be in my introduction, and in what order? How do writers normally end the introduction?
Introduction
A good beginning makes a good ending.
组员：周志文，祝聪，宁晓栩，刘凤仪，张晓曼
1. What is an introduction? 2. What’s the purpose of the introduction? 3. How should I start? 4. The model of introduction. 5. Four components of a model. 6. Vocabulary
Readers will ask the questions:

What topic am I going to learn about? Why is that topic important? Do I know the topic already? What do I know already?
4.The Model of Introduction
(1) establishes the importance of this research topic (2) provides general background information for the reader. (3) in a more detailed way, using research references to support both the background facts and the claim for significance. (4) describes the general problem area or the current research focus of the field. 确立研究主题的重要性
1.What Is an Introduction?
The introduction section shows the
questions that should be answered for the readers once they finish reading the “Introduction”.
Example Analysis
（文章来源数据库）
《糖尿病孕妇的临床错误医疗措施》 (文章来源期刊)
Research Mຫໍສະໝຸດ thod，本文研 究方法：个案分析
Background,介绍背景，糖尿病 孕妇及其婴儿患病几率比正常 孕妇高出数倍。 presenting the research problem and saying how and why this problem will be solved：随着科技发展， 降低患病率成为可能，此项 研究也具有必要性 The aim of this paper本文研究目的： 提高糖尿病孕妇母子 健康几率
2.What’s the Purpose of the Introduction?
The introduction comes at the start of a
piece of writing. Without this part, the reader cannot easily understand the more detailed information about the research that comes later in the thesis.