Introduction写作突出争议与不足常用句式

突出研究领域的争议

A much debated question is whether …

Debate has long prevailed (普遍存在) as to whether …

The precise effect of X is a much-debated topic.

One major issue in early X research concerned ...

To date there has been little agreement on what ...

The issue has grown in importance in light of (考虑到) recent ...

There has been disagreement on the criteria (标准) for defining X.

In the literature on X, the relative importance of Y is debated.

One observer has already drawn attention to the paradox (悖论) in ...

Questions have been raised about the use of animal subjects in ...

In many Xs, a debate is taking place between Ys and Zs concerning ...

Debate continues about the best strategies for the management of ...

There has been much division between historians on the subject of …

This concept has recently been challenged by X studies demonstrating ...

The debate about X has gained fresh prominence with many arguing that ...

Scholars have long debated the impact of X on the creation and diffusion (扩散) of …

More recently, literature has emerged that offers contradictory findings about ...

One of the most significant current discussions in legal and moral philosophy is ...

The relationship between X and Y has attracted conflicting interpretations (解释) from …

One major theoretical issue that has dominated the field for many years concerns ...

The controversy about scientific evidence for X has raged (猛烈地继续) unabated (未减弱) for over a century.

The issue of X has been a controversial and much disputed (争论) subject within the field of ...

Several divergent (有分歧的) accounts of X have been proposed, creating numerous controversies.

The causes of X have been the subject of intense debate within the scientific community.

In the literature on X, the relative importance of Y has been subject to considerable discussion.

前人研究的不足

No previous study has investigated X.

The use of X has not been investigated.

There is little published information on …

There is very little published research on …

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 …

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

In addition, no research has been found that surveyed ...

Surprisingly, the effects of X have not been closely examined.

Surprisingly, X is seldom studied and it is unclear to what extent …

In contrast to X, there is much less information about effects of …

X has hitherto (迄今为止) received scant (不足的) attention by scholars of the Y period.

A systematic understanding of how X contributes to Y is still lacking.

While X is a growing field (Smith, 2015), publications on Y remain few.

Relatively little research has been carried out on X, and even less on Y.

Despite the importance of X, there remains a paucity of evidence on …

There have been no controlled studies (对照研究) which compare differences in ...

The issue of X has attracted very little attention from the scholarly community.

To date, the problem of X has received scant attention in the research literature.

To date, no large-scale studies have been performed to investigate the prevalence of ….

Although studies have recognised X, research has yet to systematically investigate the effect of …