引言该怎么写？（二）

在上次的介绍如何写引言的内容中，我们给大家介绍了论文前言的重要性，并且概括了前言中所需要的大致内容。这次我们为大家分享一下CARS模型中的第一点Establishing the territory ( establishing importance of the topic, reviewing previous work）应该怎么写。

1

Establishing the importance of the topic for the world or society

X is fundamental to …

X has a pivotal role in …

X is frequently prescribed for …

X is fast becoming a key instrument in …

X plays a vital role in the metabolism of …

X plays a critical role in the maintenance of …

Xs have emerged as powerful platforms for …

X is essential for a wide range of technologies.

X can play an important role in addressing the issue of …

Xs are the most potent anti-inflammatory agents known.

There is evidence that X plays a crucial role in regulating …

X is a common condition which has considerable impact on …

In the new global economy, X has become a central issue for …

Evidence suggests that X is among the most important factors for …

X is important for a wide range of scientific and industrial processes.

Xs are one of the most widely used groups of antibacterial agents and …

There is a growing body of literature that recognises the importance of …

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

In the history of development economics, X has been thought of as a key factor in …

Xs are one of the most widely used groups of Y and have been extensively used for …

2

 Establishing the importance of the topic for the discipline

A key aspect of X is …

X is of interest because …

X is a classic problem in …

A primary concern of X is …

X is a dominant feature of …

X is an important aspect of …

X is a fundamental property of …

The concepts of X and Y are central to …

X is at the heart of our understanding of …

Investigating X is a continuing concern within …

X is a major area of interest within the field of …

X has been studied by many researchers using …

X has been an object of research since the 1960s.

X has been the subject of many classic studies in …

X has been instrumental in our understanding of …

The theory of X provides a useful account of how …

Central to the entire discipline of X is the concept of …

X is an increasingly important area in applied linguistics.

The issue of X has received considerable critical attention.

X has long been a question of great interest in a wide range of fields.

3

Establishing the importance of the topic (time frame given)

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 …

4

Synopsis of literature

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 …

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