Essay Introduction写作必备句型

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01研究主题的重要性

1. X plays a critical role in

2. There is evidence that X plays a crucial role in

3. X has become a central issue for

4. Evidence suggests that X is among the most important factors for

5. X is an important component in the , and plays a key role in Y.

6. X is a major area of interest within the field of

02研究现状常用句型

1. In recent years, there has been an increasing interest in

2. Recent developments in X have heightened the need for

3. The last two decades have seen a growing trend towards

4. Recently, researchers have shown an increased interest in

5. Over the past century, there has been a dramatic increase in

6. The past decade has seen the rapid development of X in many

03文献综述常用句型

1. Extensive research has shown that

2. Previous research has established that

3. Data from several studies suggest that

4. Studies of X show the importance of

5. Existing research recognises the critical role played by

6. A number of cross-sectional studies suggest an association between X and Y

7. Studies over the past two decades have provided important information on

8. A considerable amount of literature has been published on X. These studies

04概述目前研究的不足常用句型

1. Previous studies of X have not dealt with

2. Most studies in the field of X have only focused on

3. Previously published studies on the effect of X are not consistent.

4. However, much of the research up to now has been descriptive in nature

5. Research on the subject has been mostly restricted to limited comparisons of

6. However, few researchers have been able to draw on any systematic research into

05该领域的研究目前较少或者尚不完善时常用句型

1. Up to now, far too little attention has been paid to

2. So far, however, there has been little discussion about

3. There is little published data on

4. No previous study has investigated X.

5. To date, there are few studies that have investigated the association between

6. much less is known about X.

7. Currently, there are no data on

8. What is not yet clear is the impact of X on

9. Much uncertainty still exists about the relationship between

10. However, the influence of X on Y has remained unclear.

例句：

While/Although some research has been carried out on X, no controlled studies have been reported.

06研究目的常用句型

1. The purpose of this investigation is to

2. The specific objective of this study was to

3. The objectives of this research are to determine whether

4. The main aim of this study is to investigate the differences between X and Y.

5. There are two primary aims of this study: 1. To investigate 2. To ascertain

07研究意义常用句型

1. This study provides new insights into

2. Understanding the link between X and Y will help

3. This study aims to contribute to this growing area of research by exploring

4. This project provided an important opportunity to advance the understanding of

08概述文章结构常用句型

1. This paper begins by It will then go on to

2. The essay has been organized in the following way.

3. The main issues addressed in this paper are: a), b) and c).

4. The overall structure of the study takes the form of six chapters, including

5. The third chapter is concerned with the methodology used for this study.

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