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Chapter One Introduction

1.1 Significance and Background of the Study该研究的意义和背景

在传统的文法，语法和词汇都被视为两个不同类别的语言。而这两类中国英语学习者学习英语.但是它实现了一个的句子只是学习的每一个单词的语法或含义的完整和正确的理解是相当困难的。这是一种复杂的选择和只有在语法规范”的结果中体现一个非常大的数目来理解语言文字“通常被称为”槽和填料模型，设想文本ASA系列的插槽，其中有有待填补一个词典，满足本地约束，[i9109]然而，在语料库语言学中具有大量的研究，发现辛克莱，在许多情况下，不能只由传统的语法解释。例如，“1）在使用的单词或短语的语义含义 2）短语的含义是个简单组成的每一个字。”也指出，辛克莱“的意思是在几个搭配的话，是不是有限的序列选择的字。理解是越来越多的困难，使一个完整的，正确的解释理解句子的含义仅通过观察特森句子的语法结构。

In traditional grammar, grammar and vocabulary have been regarded as two differentcategories in a language. And in these two categoriesChineseEnglish learners learn English.But it is rather difficult to achieve a complete and correct comprehension of a sentence just bystudying its grammar or meaning of every single word. Sinclairpointed out “this is a way ofseeing language text as the result of a very large number of complex choices and the onlystraint is grammaticalness" and “it is often called a ‘slot and filler' model, envisaging texts asa series of slots，which have to be filled from a lexicon, which satisfies local restraints’，. [i9109]However, with a large amount of research in Corpus Linguistics，Sinclair found out that thereare many cases，which can't be explained only by the traditional grammar. For example; “1)There is semantic straints in the use of words or phrases; 2) The meaning of a phrase is notthe simple composition of each word.” Sinclair has also pointed out “the meaning is moreembodied among several collocation words and is not limited to the sequence choice of everysingular word.，’ Jt is more and more difficult to make a complete and correctexplanation and understanding abouta sentence's meaning only through observing thesentence's grammar structure.
Therefore, Sinclair thought the word is as important as the grammar and the word shouldbe put in the priority. That is the basic concept of his lexical grammar theory and in thattheory,lexical item is a very important element. Afterwards, Sinclair broadened his concept oflexical item and extended it into the concept of "the extended unit of meaning". The extendedunit of meaning, also referred to as lexical item, is a language unit composed of one or morewords. Usually it is collocated with another lexical item to express the meaning.Sinclairthought "the basic unit of the meaning is the lexical item, not the word.,，[2G 78] He hasmade a breakthrough in description of the interior structure of a lexical item. He analyzes alexical item from five parts: 1) core, 2) collocation, 3) colligation, 4) semantic preference and5) semantic prosody. Those five parts contribute to the realization of meaning in differentlevels.So he chooses that "Maximal Approach" to study the meaning.
However，Many scholars at home and abroad have done some researches about theEnglish learners' collocation，colligation or semantic prosody respectively (Firth 1957;Pawley & Syder 1983; Wei Naixing 2001, 2002b, 2002a; Kennedy 2003; Pu Jianzhong2003)[4i][43]. But only a few scholars (Stubbs 2001; Wei Naixing 2002a; Tignini-Bonelli 2002;Hunston 2007)[43] have regarded the extended unit of meaning as a whole unit to research thewords and phrases. Fewer scholars who have used the theoretical model of extended meaningof unit to discriminate the meanings.Nowadays, cohesion analysis has gained much attention in several branches of linguistics.Most descriptive studies (Halliday & Hasan 1976，Hasan 19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。