A Corpus-driven Study of Phraseological Sequences in English Academic Texts

This article NEW-JDEST corpus evidence-based system described and summarized academic English text phrase sequence, its significant form, meaning and functional characteristics. To the Firth linguistics as a theoretical framework of this study, On the Firth of context, Sinclair extended unit of meaning, and Halliday language yuan to further explore and empirical research. Data processing from the internal adhesion of multi-word sequences set about establishing a new computer to automatically extract the consecutive phrases sequences, and the NEW-JDEST corpus for measuring, testing the effectiveness of the method. The new extraction method includes three aspects: (1) a first order Markov model anchored, the development of \extraction. (2) the establishment of a new standardized algorithm \(3) \In this paper, a new method to extract the phrase sequence with existing statistical tools (such as traditional entropy means, Wordsmith software 4.0) extracted data sampling. The results show that the new method is able to more effectively identify phrase sequence, accuracy rate of 79.8%. The extracted data can reflect the internal semantic and structural characteristics of the sequence. In this study, the level of discourse function analysis, reference Halliday language element theory, proposed by the three-dimensional model of the discourse function of the phrase sequence ─ ─ experience (experiential) stance (stance) and organization (organizational). These three types of discourse function is not complementary but independent of each other, to describe academic text phrases characteristics from different angles. The phrase sequence implementation experience in academic texts frequency up. These sequences are the main carrier of the message, reflecting the characteristics of academic text high information density. They usually do not have the complete structure of the clause but rather to act as one or more clauses ingredients. The semantic experience sequence to achieve major the five categories proposition sense: (1) the process of expression and action. (2) the alleged entities, concepts and activities. (3) the expression attribute significance. (4) to express the sense of time and space. (5) to express vague concept. Vocabulary - Grammar stand function realized by the the phrase hierarchy sequence and the clause-level sequence, which is the focus of this study. Structure, the clause-level sequence can be divided into the dominant subject type, It-external type and zero subject type. Type stance of the theoretical framework of the system function, It-external academic text 4 Modality: cognitive (to express some may be OK), obligations (the said obligations with trends), power (indicating potential wishes) and evaluation (expressed attitudes, opinions and Evaluation). It-external sequence of high-frequency, although scientific research and objectivity requirements to avoid subjective emotional identification academic text, the researchers still use a lot of hidden means to express its position and attitude, should influence the readers. The discourse function reflects organizational sequence of three levels: the implementation of Discourse behavior, organizational discourse structure, expressing the general logic semantic relationships. Corpus-based evidence, this paper describes the six categories of academic text highlights the discourse behavior are focusing, stated opinions or facts stated results, reported in chapter indicate. The article also discusses the the CARS model language step 3 is used to achieve \The data show that the academic discourse behavior and discourse structure of the text has its respective the typical words implementations, some sequences are frequently used to implement specific discourse organization. Sense, a typical reproducing sequence become the logo of a specific function. All the data and discussions, the total election (co-selection) academic authors choose language forms the core mechanism to achieve a sense of experience, stance and organizations. Statute of sexual penetration to the different aspects of language use, embodied in the total election in the form of multiple levels. The the the NEW-JDEST evidence pointing to the four categories of academic text we selected relationship: the vocabulary and the vocabulary of the election, vocabulary and syntax election, the phrase sequence with topic selection, we selected phrase sequence discourse structure. These we selected relations reflect the vocabulary, grammar, and sense of unity. This nature in language description and linguistic theory has not yet been given sufficient attention. In addition, the automatic extraction of the phrase sequence, meaning units re-definition total elect refinement of the relationship, the traditional language to describe the theory of discourse organization pattern of the sequence of the phrase, as well as China EAP teaching and other aspects have a certain value and inspiration .