英语词汇学.ppt

英语词汇学248953.pptChapter 2 Basic Concepts of Words and VocabularyWhat is lexicology??Lexicology is a branch of linguistics concerned with the study of the vocabulary of a given language. It deals with words, their origin, development, structure, formation, meaning and usage. In short, it is the study of the signification and application of Is a Word?A word is a minimal free form of a language that has a given sound, meaning and syntactic 、意义和语法功能,能独立运用的最小的语言单位。What is vocabulary??The total number of the words in a language. ?All the words used in a particular historical period.?All the words of a given dialect, a given book, a given discipline and the words possessed by an i ndi vi dual Size?Speaking vocabulary----active vocabulary?writing vocabulary------active vocabulary?reading vocabulary------passive vocabulary?guess vocabulary--------passive vocabulary?Language can be defined as “an arbitrary vocal system used for munication”. By system we mean that the elements in a language are arranged according to certain rules, but not at random. Elements at a lower level bined according to certain rules to form elements at a higher level.?Specially, Language presents itself as a hierarchy in different aspects. As is shown in the following hierarchical rank scale, language rises form morpheme at the bottom up to the sentenceat the top in terms of lexicography. (词典编纂) Morpheme? is a morpheme(词素)?The morpheme is the smallest functioning unit in position of words, not divisible or analyzable into smaller forms.?What is usually considered a single word in English may posed of one or more morphemes:?One morpheme---nation?Two morphemes---nation-al?Three morphemes---nation-al-ize?Four morphemes---de-nation-al-ize(使…非国有化)?More than four morphemes---de-nation-al-iz-ation?So we can define morpheme in this way: the smallest unit in terms of relationship between expression and content, a unit which can not