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许多粉丝私信我咨询SCI论文写作技巧，趁此机会，小研整理了SCI论文各部分英文写作常用句式。所谓万变不离其宗，掌握这些句式，你的论文投稿accepted概率将会大大提高。
因为内容量很大，小研打算以专辑的形式分批推出，本文首先介绍Introduction部分的常用句式。
ps: 本文句式适用范围涵盖所有学科，总有你的菜！
Introduction内容一般包括：
介绍研究背景和重要性
前人研究基础
前人研究的不足
亟待解决的问题
提出你的idea
描述你的理念和方法
强调你的结果的重要性
简要概括你的结论
就以上几点的必用句型，我接下来分别娓娓道来。
1. 介绍研究背景和重要性
Recently, there has been renewed interest in …
Traditionally, Xs have subscribed to the belief that …
One of the most important events of the 1970s was …
In recent years, there has been an increasing interest in …
Recent developments in X have heightened the need for …
The last two decades have seen a growing trend towards …
Recently, researchers have shown an increased interest in …
Over the past century, there has been a dramatic increase in …
Recent trends in X have led to a proliferation of studies that …
X proved an important literary genre in the early Y community.
The past decade has seen the rapid development of X in many …
Since it was reported in 2005, X has been attracting a lot of interest.
Recently, a considerable literature has grown up around the theme of …
Recent developments in the field of X have led to a renewed interest in …
The past thirty years have seen increasingly rapid advances in the field of …
The changes experienced by X over the past decade remain unprecedented.
In light of recent events in X, it is becoming extremely difficult to ignore the existence of …
2.前人研究基础
Recent evidence suggests that …
Extensive research has shown that …
Studies of X show the importance of …
It has previously been observed that …
Several attempts have been made to …
Previous research has established that …
Data from several studies suggest that …
Recent work by historians has established that …
Previous research comparing X and Y has found …
The existing body of research on X suggests that …
There is a growing body of literature that recognises …
Several theories on the origin of X have been proposed.
Existing research recognises the critical role played by …
It is now well established from a variety of studies, that …
Recently investigators have examined the effects of X on Y.
Surveys such as that conducted by Smith (1988) have shown that …
Factors found to be influencing X have been explored in several studies.
A number of cross-sectional studies suggest an association between X and Y…
Studies over the past two decades have provided important information on …
A considerable amount of literature has been published on X. These studies …
3.前人研究的不足
There is little published data on …
No previous study has investigated X.
The use of X has not been investigated.
There has been no detailed investigation of …
There has been little quantitative analysis of …
Data about the efficacy and safety of X are limited.
Up to now, far too little attention has been paid to …
A search of the literature revealed few studies which …
The impact of X on Y is understudied, particularly for …
Few studies have investigated X in any systematic way …
In addition, no research has been found that surveyed …
So far, however, there has been little discussion about …
So far, very little attention has been paid to the role of X.
Surprisingly, the effects of X have not been closely examined.
In contrast to X, there is much less information about effects of …
A systematic understanding of how X contributes to Y is still lacking.
Despite the importance of X, there remains a paucity of evidence on …
There have been no controlled studies which compare differences in …
To date, the problem has received scant attention in the research literature
To date, there are few studies that have investigated the association between …
4. 亟待解决的问题
It is still not known whether …
… much less is known about X.
The nature of X remains unclear.
Currently, there are no data on …
What is less clear is the nature of …
Very little is currently known about X in …
Research to date has not yet determined …
What is not yet clear is the impact of X on …
There is still uncertainty, however, whether …
The response of X to Y is not fully understood.
Causal factors leading to X remain speculative.
The neurobiological basis of X is poorly understood.
Little is known about X and it is not clear what factors …
To date, only a limited number of Xs have been identified.
The mechanisms that underpin X are not fully understood.
Much uncertainty still exists about the relationship between …
This indicates a need to understand the various perceptions of X that exist among …
It is now well established that … However, the influence of X on Y has remained unclear.
5. 提出你的idea
The specific objective of this study was to …
An objective of this study was to investigate …
This thesis will examine the way in which the …
This study set out to investigate the usefulness of …
This dissertation seeks to explain the development of …
This case study seeks to examine the changing nature of …
The objectives of this research are to determine whether …
This prospective study was designed to investigate the use of …
This research examines the emerging role of X in the context of …
This study systematically reviews the data for…, aiming to provide …
Drawing upon two strands of research into X, this study attempts to …
This thesis intends to determine the extent to which … and whether …
This dissertation aims to unravel some of the mysteries surrounding …
This study therefore set out to assess the effect of X …, and the effect of …
The main aim of this study is to investigate the differences between X and Y.
Part of the aim of this project is to develop software that is compatible with …
There are two primary aims of this study: 1. To investigate … 2. To ascertain …
This study seeks to obtain data which will help to address these research gaps.
One purpose of this study was to assess the extent to which these factors were …
The purpose of this investigation is to explore the relationship between X and Y.
6. 描述你的理念和方法
Data for this study were collected using …
Five works will be examined, all of which …
This investigation takes the form of a case-study of the …
This study was exploratory and interpretative in nature.
This study uses a qualitative case study approach to investigate …
The research data in this thesis is drawn from four main sources: …
The approach to empirical research adopted for this study was one of …
This dissertation follows a case-study design, with in-depth analysis of …
By employing qualitative modes of enquiry, I attempt to illuminate the …
Qualitative and quantitative research designs were adopted to provide …
Both qualitative and quantitative methods were used in this investigation.
A holistic approach is utilised, integrating X, Y and Z material to establish …
The study was conducted in the form of a survey, with data being gathered via …
The methodological approach taken in this study is a mixed methodology based on …
A combination of quantitative and qualitative approaches was used in the data analysis.
7.强调你的结果的重要性
This is the first study to …
This study provides new insights into …
This work will generate fresh insight into …
The study offers some important insights into …
Understanding the link between X and Y will help …
This is the first study to undertake a longitudinal analysis of …
The present research explores, for the first time, the effects of …
The importance and originality of this studyare that it explores …
The findings should make an important contribution to the field of ….
Characterisation of X is important for our increased understanding of …
It is hoped that this research will contribute to a deeper understanding of …
This study aims to contribute to this growing area of research by exploring …
This project provided an important opportunity to advance the understanding of …
Therefore, this study makes a major contribution to research on X by demonstrating …
There are several important areas where this study makes an original contribution to …
The experimental work presented here provides one of the first investigations into how …
8.简要概括你的结论
The first section of this paper will examine…
This paper begins by … It will then go on to …
My thesis is composed of four themed chapters.
The essay has been organised in the following way.
The remaining part of the paper proceeds as follows: …
The main issues addressed in this paper are: a), b) and c).
This paper first gives a brief overview of the recent history of X.
This paper has been divided into four parts. The first part deals with …
The third chapter is concerned with the methodology used for this study.
The overall structure of the study takes the form of six chapters, including …
Chapter Four analyses the results of interviews and focus group discussions undertaken during …
Chapter Two begins by laying out the theoretical dimensions of the research, and looks at how …
The fourth section presents the findings of the research, focusing on the three key themes that …
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