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基于短语学剖析英语学术领域中的论文题目   
本文的研究基于东华大学纺织英语学术论文语料库的子库纺织英语学术论文标题语料库。借助于WOrdsmith4.0的帮助，本文主要研究语料库中三词到五词的高频短语序列，探究了其中的词汇和搭配特点以及功能上的特征。本文是定量研究与定性研究的结合。
Chapterl Introduction
1.1 Research background
      As a media for communication, English of Science and Technology have attracted much academic attention due to the rapid progress of globalization. This important applied style has developed its own features which distinguish itself from other article types, such as objectivity, formality and accuracy. Halliday defines it as "a generalized functional variety, or register, of the modern English language" (Halliday, 1988:162).
    Along with the speeding development of computer technology,  linguistics progresses more and more rapidly, so some research which used to be difficult or impossible can be carried out nowadays. In the past, the materials in a corpus were collected and sorted out by manual labor which became a heavy burden for the research. Thanks to the application of computer technology in this area, corpus has advanced marvelously in both efficiency and scale.
Phraseology has been a central focus of research in linguistics for a long time. Studies of this kind can be thought of falling into two major paradigms: theory-driven studies and corpus-driven studies. Representatives of the former paradigm include, among  others,  Bolinger(1976),  Pawley  and  Syder(1983),  Nattinger(1988),  and Cowie(1988), which, starting with their respective theoretical models, select a limited range of lexical sequences for study, referred to variously as linguistic prefabs, chunks, lexicalized sequence stems, lexical phrases, and composites and formulae.(For a detailed review of these studies, refer to Wei 2002:27-33). Different terms for more or less the same linguistic phenomena often reflect the researchers' differing theoretical perspectives  and  methodological  consideration. 
Nevertheless, the  theory-driven studies have several features in common: their point of departure is a theoretical model, within which a small number of lexical sequences is involved and discussed in detail; their principal criterion for identifying a sequence as phraseology is so-called "psychological salience", whilst the frequencies of occurrence of sequences have not been seriously taken into account; and they largely focus on structurally well-formed entities and semantically idiomatic phrases. The corpus-driven research paradigm, by contrast,  starts  with  data.  The  major  criterion  for  identifying  phraseology  is probabilistic information or the frequency of occurrence of a sequence, rather than subjective psychological salience. Usually a very large number of sequences are examined and studies often deal with wider varieties of lexical sequence, for example, collocations,   fixed   and   semi-fixed   expressions,   idioms,   and   incomplete lexical-grammatical sequences.

References
Altenberg B. (1998). On the phraseology of spoken English: The evidence of recurrent word-combinations. In Cowie A.P. (ed.). Phraseology: Theory, Analysis, and Applications. Oxford: Clarendon Press. pp. 101一120.
Anthony, L. Writing research article introductions in software engineering: How accurate  i本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。