The primary goal of this research is …
此项研究的首要目标是„
The present study will therefore focus on …
因此，当前研究的重点放在
The present work deals mainly with …
当前工作主要涉及„
In this paper, we aim at …
本文旨在„
On the basis of existing literature data, we carried out studies in an effort to …
在现有文献数据的基础上，我们开展了研究，试图„
4.说明篇章结构
This paper is divided into 5 sections as follows …
本文分成如下五个部分
Section one of the paper opens with …
第一节以„开头
Section 3 develops the second hypotheses on …
每三节展开关于„的第二项假设
Section 4 shows/introduces/reveals/treats/ develops/deal with …
第四节描述„
The 5th section provides an exposition that places the primary emphasis on …
第五节是展示部分，重点放在„
The result of … is given in the last section.
,,的结果放在最后一部分。
In this paper, data and results are presented under the major heading of …
本文中，数据和结果放在大标题„下。
Finally, a summary is given of …
最后，给出关于„的结论。
Finally, some problems that deserve to be noted and their solution are presented.
最后提出了应注意的一些问题和解决方法。
5.研究范畴
The problem under discussion is within the scope of …
讨论的问题限于„范畴。
The problem I have referred to falls within the field of …
我谈及有问题发生在„领域。
The problem we have just outlined seems to be inside of the province of …
我们先前描述的问题似乎只发生在„省。
Studies with these effects covered various aspects of …
针对这些效果的研究涵盖了„的不同方面。
The author has limited his studies to the related aspects of … 作者将研究范围限定在„的相关方面。
Our studies with this technique are confined to only one particular aspect of …
我们运用此项技术的研究只限于„的一个特定方面。
This subject is concerned chiefly with the study of …
本课题主要涉及„的研究。
The approach under study is only applied to …
研究的方法只能应用于„
The theory cannot apply to other cases of …
本理论不适用于其它„情况。
The emphasis of this paper is to survey …
本文的重点是调查„