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This chapter, aiming at transforming the basic information of ELD,will briefly introduce the definition of learner's dictionary, thedevelopment of ELD and the lexicographic features of ELD.本章瞄准转化ELD的基本信息，将简要介绍学习者的词典，开拓ELD ELD字典功能的定义。

1.1 Deflnition of Learner's Dictionary
字典是一个文本传达信息。不同于其他这样的文本，它不呈现中的材料的关连，连贯的序列，但分成数以千计的短章，也就是字典条目，这些通常被安排在内容方面的任意方式，也就是说按字母顺序排列根据入境字（1993:2）博Svensen，拼写。Zgusta（1971）认为，字典是一个社会的语言形式编译从一个给定的语音社区的讲话习惯和评论作者以这样一种方式，合格的读者了解每个单独的意义系统排列的列表形成的，被告知有关事实方面的功能，在字典的形式。一本字典的价值在于它提供的信息。如果没有信息，字典不能是一个字典，但一摞纸。
Dictionary is a text conveying information. Different from othersuch texts, it does not present the material in a connected, coherentsequence, but divided into thousands of short chapters, that is, dictionaryentries, and these are usually arranged in an arbitrary way as regardscontents, that is to say in alphabetical order according to the spelling ofthe entry words (Bo Svensen, 1993:2). Zgusta (1971) argues that; Adictionary is a systematically arranged list of socialized linguistic formscompiled from the speech-habits of a given speech-community andcommented on by the author in such a way that the qualified readerunderstands the meaning of each separate form, and is informed of therelevant facts concerning the function of that form in the dictionary. Thevalue of a dictionary lies on the information it provides. Without theinformation, a dictionary cannot be a dictionary, but a stack of paper.
Different users need different information from dictionaries. Theexpectations and requirements of the users are various. Thus dictionaries,describing linguistic units, can be divided into different types. In theperspective of numbers of languages presented in dictionaries,dictionaries can be divided into monolingual, bilingual, and multilingualdictionaries. Monolingual dictionaries aimed at non-native learners of alanguage such as Cambridge International Dictionary of English (CIDE),Longman Dictionary of Contemporary English (LDOCE), CollinsCOBUILD Learner 's Dictionary (COBUILD), Oxford AdvancedLearner 's Dictionary (OALD), and Macmillan English Dictionary forAdvanced Learners (MEDAL) which are typical English learner'sdictionary setting a good example in the compilation of learner'sdictionary.
Learner's dictionary which is also called pedagogical dictionaryaims primarily at non-native learners of a language. The degree towhich dictionaries have been integrated into the learning processvaries from culture to culture. The true dictionary as a learning tool isstill in its infancy (Hartmann, R. R. & Gregory J, 2000). Readers oflearner's dictionary are classified into two kinds: native languagelearners and foreign language learners. Learner's dictionary aiming atnative language learners pays much more attention to the definition ofeach entry, while that aiming at foreign language learners emphasizes the usage and grammatical information of each entry. Thus the latterkind features the simplified defining language, detailed syntacticinformation, a focus on phraseology and the extensive use of examplesentence.

1.2 Development of ELD
This section mainly discusses the development of ELD, whichcovers monumental works before 1980s and "Big Five" in the 21?* century.This section describes the whole development of ELD in chronologicalorder which aims at giving a clear 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。