The famous American linguist L. Selinker proposed intermediary hypothesis in 1969，and published a milestone paper "Interlanguage" in 1972，It plays a huge promoting role in the study of the second language。From now on，People quickly have a one -sided research perspective from comparative analysis and error analysis，Expand to comprehensively pay attention to the language of learners -research of intermediary language，Not only does it pay attention to the error performance of the language of the learner，Pay more attention to its correct performance。

Intermediary language research has always followed the diversified research route of discipline，Various hypothesis and theories are constantly emerging，Research content and branches are increasing，People's exploration of the essence of the intermediary continues to deepen。

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Idealization plays a basic role in scientific research。When people cannot fully understand new things，Often use idealized research to slowly reveal its essence and development law。But the idealized research finally has certain differences with reality，So，Scientific research will ultimately go to idealization。Research on intermediary language also experienced an idealized process without exception。The idealized research stage in the early stage of intermediary research，For example, all kinds of functional language、Relaxing the sequence of the form of the form，It is an indispensable step to reveal the characteristics of the development of intermediary language。However, with the deepening of research，Studies in the world are constantly discovering the results of research that is different from the classic acquisition order，This is because bet365 live casino games the intermediary survey based on universal laws did not consider the mother tongue background、Learning group、The effect of different factors such as the learning environment on the acquisition of the two -language，So the characteristics of the diversity of intermediary language。The main manifestation of intermediary language de -ideal research is to gradually attach importance to the investigation of various influencing factors and variations，Inquiry about the laws of commonality and personality，From a plane research to a three -dimensional research transition。

However，And the idealized research of intermediary language for teaching，Also with continuous value。So，The current intermediary research is a study of idealization to a certain extent，instead of rejected it completely。

　　Methods Innovation Promoting Research

Intermediary language research is inseparable from the language data produced by learners，Research data innovation is closely related to the development of intermediary research methods。initial，People mainly use questionnaires to survey，For example, translation、grammar judgment、Fill in the blanks、Double -sentence testing and viewing pictures and other forms for data collection。It is characterized by fast data collection speed，and targeted，You can start research quickly，Let the early intermediary research be developed quickly。However, this data collection method has its innate defects，often with traces of induced output，Can't accurately reflect the natural output of the learner，Therefore, it is gradually abandoned by people。

With the development of corpus linguistics，The construction of the intermediary language library has been booming。Intermediary language fabrics gradually become the main data source of intermediary research，The research method of the corpus has also become the mainstream research method of intermediary research。The construction process of the intermediary language library also reflects the changes in bet365 best casino games people's research on intermediary research，For example, people gradually turn from horizontal corpus to the construction of the vertical corpus，This is related to the development and change of intermediary language; and people pay more and more attention to various spoken libraries，Rudian Test Library、Classroom Record Library、Personal Oral Tracking Corgal Library, etc.，It is related to the increase in the study of intermediary language and fluent in the people; in recent years, intermediary language multi -modal language libraries have also emerged，This type，Adaptation and promoting the development of three -dimensional research on intermediary language。

corpus data allows intermediary language comparative research and computer-aided error analysis and other research methods to develop rapidly。Although people have criticized the fatal shortcomings of comparative analysis very early，But the method of comparative research on the intermediary has always been valued。Comparison of intermediary language has two levels: one level is a comparison between intermediary language and mother tongue and purpose language。After a lot of research discovery，The comparison between which two languages ​​can not be just a simple comparison of surface language form，Also pay attention to the comprehensiveness of the comparison。Markedness theory enhanced the interpretation intensity of the comparative study of this level，It is found that no marked projects in various languages ​​are easier to migrate to intermediary words，And these language item target record judgments require support for type studies，It also promoted the development of two -character research under the perspective of the type of learning。In the comparison of intermediary language and purpose language, be careful not to be trap into the trap of compassion fallacy，That is, you cannot completely measure the right or wrong of the intermediary language in accordance with the standards of the target language，and ignore the bet365 Play online games own development law of the intermediary。Another level is a comparison between intermediary language。Through different language environments or communities，Comparison between intermediary language produced by different learners，You can find some individual characteristics in the evolution of the intermediary language。At the same time，Comparison of intermediary language also put forward new requirements for the construction of intermediary language library，That is, it not only includes different intermediary libraries，It should also include the different mother tongue and the purpose of the purpose corresponding to its theme，to meet the needs of the comparative research of various levels of intermediary language。and the analysis of the computer assisted partial error analysis supported by the corpus data also made the intermediary error analysis have changed hugely，More in line with the systemic and changeable characteristics of the intermediary language。

Another research data is collected by psychological testing and experiments。Past，People usually use psychological quantitative tables to collect data for data learning and communication strategies for two -character learners、Motivation and anxiety and other emotional factors，Examination of factors such as age and gender。and now some advanced measurement methods，For example, eye movement technology、ERP dynamic brain electrical monitoring、Brain Imaging Technology (FMRI), etc., is gradually applied to intermediary experiment research。This kind of experimental design is stronger，Operation requirements are higher。However，Have great potential，I believe that in the future, it will become an indispensable data collection method for intermediary research，At the same time, it will also drive the change of intermediary research methods。

　Research perspective transition to interdisciplinary

Early intermediary research is relatively static，focusing on Skytimeter、Semantic、Different levels such as the use and social culture describe the intermediary language。Complex Dynamic Bet365 lotto review System Theory at the end of the 20th century (Complex Dynamic System Theory) began to be applied to intermediary research，Its core point of view -dynamic (dynamic)、Non-linear and self-organization that conforms to the essential characteristics of intermediary words，Comprehensively promoted the transformation of the perspective of intermediary research。The theory of complex dynamic system makes people realize that it needs comprehensive、Dynamically examine the intermediary language，Not only should we pay attention to the excavation of group laws，Research on individual differences and intermediary mutations。People have changed the concept that used mutations as interference，Instead, it is necessary to study mutation as a complicated dynamic system.。People start to comprehensively examine the complexity of the intermediary language、Development and change of accuracy and fluentity。Emergency theory、Fractal theory and other theories are applied to the generation and development of intermediary; in addition，Due to the unspeaks of the intermediary and the limitedness of the learner's output，People also use the method of data modeling (data modeling) to simulate the acquisition process of intermediary language，Try to predict the development trajectory of the intermediary language，greatly enrich the dynamic development of intermediary language。

On the other hand，People have always had a strong curiosity of the mysteries of language, that is, the formation of language,。This is the same for intermediary language。So，At the same time as the intermediary description and development of the process，People also use the promoter effect (Priming Effect) experiment to examine intermediary vocabulary、Sentences and other levels of understanding and output rules; also borrowed the conceptual integration theory (Conceptual Blending Theory) to discuss the understanding mechanism of metaphorical language and its enlightenment of the second language bet365 Play online games teaching。People have continued to strengthen the research on intermediary output -，Except strategy、Emotional Factors and other factors that affect the acquisition of the second language，Also study the learner’s work memory through psychological experiments、The impact of intermediary machining and the output of intermediary language，Discussion of the application of connectedism models in the second language acquisition。With the development of technology，People also start to capture with the help of advanced equipment、Electricity Monitoring and Brain Imaging Experiment，Try to dig out the cognitive neural mechanism formed by intermediary language。Only research in this area has just started，There is still a long way to go。

After half a century of exploration，bet365 best casino games people's research on intermediary language is continuously deepened: from the description of the intermediary to the internal and external factors generated by the intermediary，Follow variables and influencing factors are more and more，Research data and standards used are also more and more scientific、Accurate，The inspection of intermediary language is gradually developing in the direction of three -dimensionalization。The main line around these development and changes is from focusing on the laws of groups to the attention of individual characteristics and mutation，The transformation from static research to dynamic research，At the same time, we should take into account the inherent psychological and cognitive neurological mechanism of the formation of the intermediary language。Current，The mystery of the intermediary language is still not fully unveiled，For example，What is the initial state of the intermediary language? What is its final state?、Three -dimensional development? Just like other things in nature，The intermediary language contains certain rules in the dynamic development and change of chaos，It only takes longer to discover these laws。

　　(Author Unit: School of International Culture and Education, Nanjing Normal University)