本研究旨在對二語復(fù)雜度進行多維度探究,在傳統(tǒng)的句法復(fù)雜度和詞匯復(fù)雜度基礎(chǔ)上加入新的復(fù)雜度——詞塊復(fù)雜度,首先探究詞塊復(fù)雜度能否衡量中低二語水平的發(fā)展,然后對句法復(fù)雜度、詞匯復(fù)雜度和詞塊復(fù)雜度三種復(fù)雜度的內(nèi)部構(gòu)念進行深度探究,并比較這些復(fù)雜度指標(biāo)在預(yù)測二語水平時的差異。以往的學(xué)習(xí)者語料庫研究對中低水平學(xué)習(xí)者有所忽視,為了彌補這點,本研究所用語料來自中國中低水平英語學(xué)習(xí)者——浙江省某中學(xué)初高中學(xué)生的322篇限時英語作文�？紤]到按年級區(qū)分語言水平不能避免個人差異的影響,本研究對所有作文進行了重新評分并劃分為4個語言水平層次。詞塊的選取上,我們選取了常見的形容詞+名詞和動詞+直接賓語兩種搭配,運用Stanford Parser軟件自建依存樹庫進行詞塊提取,并運用BNC在線語料庫計算詞塊復(fù)雜性,句法復(fù)雜度和詞匯復(fù)雜度分別通過二語句法復(fù)雜度分析器和二語詞匯復(fù)雜度分析器計算。通過數(shù)據(jù)分析和討論,我們得到了以下發(fā)現(xiàn):1)詞塊復(fù)雜度可以衡量二語水平的發(fā)展,但衡量水平取決于詞塊類型。形容詞+名詞的詞塊復(fù)雜度比動詞+直接賓語的詞塊復(fù)雜度在區(qū)分和預(yù)測二語水平方面更勝一籌。2)詞塊復(fù)雜度指標(biāo)根據(jù)不同的詞塊類型測...

【文章頁數(shù)】：85 頁

【學(xué)位級別】：碩士

【文章目錄】：
Acknowledgements
摘要
Abstract
List of Abbreviations
Chapter One Introduction
    1.1 Research Background
    1.2 Research Purpose
    1.3 Research Significance
    1.4 Thesis Organization
Chapter Two Literature Review
    2.1 Linguistic Complexity
        2.1.1 The Concept of Linguistic Complexity
        2.1.2 Studies on Linguistic Complexity in L2 Writings
    2.2 Three Kinds of Specific Linguistic Complexity
        2.2.1 Syntactic Complexity
        2.2.2 Lexical Complexity
        2.2.3 Phraseological Complexity
    2.3 Summary and Research Questions
Chapter Three Research Methodology
    3.1 Participants
    3.2 Data Collection
        3.2.1 Implementing Writing Tasks
        3.2.2 Data Selection and Redistribution of Participants
    3.3 Construction of Treebanks
        3.3.1 Data Documentation
        3.3.2 Automatic Annotation and Manual Modification
    3.4 Complexity Measurement and Data Analysis
        3.4.1 Syntactic Complexity
        3.4.2 Lexical Complexity
        3.4.3 Phraseological Complexity
        3.4.4 Statistical Analysis
Chapter Four Results of Developmental Features of Linguistic Complexity in L2 Writings
    4.1 Developmental Features of Three Kinds of Linguistic Complexity across Proficiency Levels
        4.1.1 Description of Phraseological Complexity
        4.1.2 Description of Syntactic Complexity
        4.1.3 Description of Lexical Complexity
    4.2 Distinct Sub-constructs of Linguistic Complexity
    4.3 Comparison among Complexity Measures in Predicting L2 Proficiency
Chapter Five Discussion about Developmental Features of Linguistic Complexity
    5.1 Developmental Features of Phraseological Complexity
    5.2 Distinct Sub-constructs of Linguistic Complexity
        5.2.1 Sub-constructs within One Complexity
        5.2.2 Relationship between Different Sub-constructs of Linguistic Complexity
    5.3 Comparisons among Complexity Measures in Predicting L2 Proficiency
Chapter Six Conclusions
    6.1 Summary of Major Findings
    6.2 Implications of the Study
    6.3 Limitations of the Study
    6.4 Suggestions for Further Studies
References



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