1. Previous research has shown that …
2. In most studies of … attention has been given to …
3. The previous work on … has indicated that it is …
4. … models have been proven useful in …
5. There have been a few studies highlighting …
6. Great concern have arisen … due to the increasing number of …
7. Most … conduct … testing on … to monitor … performance.
8. However, the problems exist in …
9. However, there appears to have …
10. Because of …, … is impossible.
II. 研究范围1. With the aim of …
2. This paper is intended to …
3. This paper aims at providing …
4. The primary goal of this research is …
5. The overall objective of his study is …
6. The author(s) made this study in order to find …
7. The objective of his investigation is/was to …
8. The intention of this paper is to survey …
9. This paper deals with …
10. This report concentrates on …
11. This paper begins with the discussion of …
12. The paper addresses the problem of …
13. The greatest emphasis has been on …
14. This paper reviews / summarizes the theory from … viewpoint, discusses … and presents …
15. Based on …, … is described / discussed / presented / analyzed / dealt with this paper.
16. The influence of … on … is investigated.
17. In this paper, … is discussed / explored / analyzed.
18. This paper analyzes some important characteristics of …
19. The paper / article / report / study / investigation / author / writer describes …
20. The importance of … is discussed and the solution to … is addressed in this paper.
III. 研究方法1. This is a working theory based on the idea that …
2. One of the great advantage of this method is …
3. The test is demonstrated by using …
4. A new method for solving this problem is presented …
5. The experiments on … have been carried out using …
6. The tests were carried out on …
7. The analysis was made with …
8. The technique applied is referred to as …
9. The experiment consisted of …
10. The theory is characterized by …
11. This formula is verified by …
12. The mechanism of … is examined.
13. The dependence of … was established.
14. The method used in the study is known as …
15. The research has recorded valuable data using the newly-developed method.
IV. 研究结果介绍1. The results obtained are …
2. Studies have shown that …
3. Results show that …
4. The experimental results are summarized as follows.
5. It was found / observed between / in …
6. It has proved that …
7. New evidence indicates that …
8. The research work has brought about a discovery of …
9. A new model was found that …
10. We have found that …
V. 研究结论1. It is concluded that …
2. The paper concludes that …
3. The findings of the research have led to the conclusion that …
4. Such a statistical method has been applied to …
5. Recommendations are made regarding …
6. The author proposes an approach to …
7. The fruitful work gives the explanation of …
8. The research conducted suggests that …
9. Suggestions were made for further study of …
10. It is suggested that …
