Chapter 3 LexiconTime periods: two classesTeaching contents:3.1 definition of a word3.2 The formation of wordsTeaching aims and requirementsLearn by heart:1. The classifications of morphemes, such as free morpheme and bound morpheme, stem, root, inflectional affix and derivational affix.2. Two ways of word-formation such as inflections and derivations.Know:1. The definition of morphemes, free morphemes, bound morphemes, stem, root, affix, inflection and derivation and so on.2. Two different fields of morphology, including inflectional morphology and derivational morphology.Understand:1. Definition of a word2. The classifications of word according to different aspects3. The formation of wordsTeaching focus and difficulties:Focus：1. The definition of morphemes, free morphemes, bound morphemes, stem, root, affix, inflection and derivation and so on.2. The classifications of morphemes, such as free morpheme and bound morpheme, stem, root, inflectional affix and derivational affix.3. Two ways of word-formation such as inflections and derivations.Difficulty:1. Classification of morphemes2. Inflection and derivations.1. Review what we have learned in last chapter, and ask some students to answer the following questions: (5m)1) How are English consonants classified?2) How are English V owels classified?3) What are phonemes and allophones?2. Study3.1 Definition of a wordA word is a minimal free form of a language that has a given sound and meaning and syntactic function.Zhang Weiyou (1999)a minimum free formStability --internal structure (can’t rearrange)relative uninterruptibility --internal structure (can’t insert)Classification of words(1)Basic word stock & non-basic vocabularyContent words & functional wordsNative words & borrowed wordsVariable words & invariable wordsOpen-class words & closed-class wordsTraditional parts of speech & additional four categoriesClassification of words (2)Variable words & invariable words (variability)—variable words: the words whose form is changeable, words which might appear in different inflective and derivative forms, v. n.—invariable words: the words whose form is unchangeable, words which usually occur in the same form such as: since, in, for, of, at, onClassification of words (3)Open-class words & closed-class words (membership)--open-class words: membership is unlimited, n. v. (economic words, scientific words.)--closed-class words: membership is comparatively limited. Pronouns, conj, prep. Articles.Classification of words (4)Traditional parts of speech & additional four categoriesTraditional parts of speech:N. v. adj. Adv. Prep. Conj. Interj.ArticleAdditional four categoriesParticles : 小品词infinite maker ‘to’, negative maker ‘not’, subor dinate units in verbal phrases.Auxiliaries: 助词(助动词、情态动词)Pro-form 代词形式pro-v. pro-adj.e.g. He likes the animal, so do i.e.g. The desk is white, so is the chair.Determiners 限定词‘the’, ‘a’, ‘some’, ‘all’e.g. ‘all the beautiful Chinese girls’,3. Study 3.2 The formation of word1) Ask the students to skip over this section and find out the answers to the following questions:a. What is morphology?b. What is morpheme? What is the biggest difference between morpheme andphoneme?c. How can we classify morphemes?2) 3.2.1 MorphologyDefinition: the study of word-formation, or the internal structure of words, or the rules by which words are formed from smaller components: morphemes.For example:Verbs are formed by adding –ify to either an adjective (adj.) or a noun (n.)在形容詞或名詞加-ify變成動詞*simple (adj.) simplify (v) 簡化*quality (n) qualify (v)使具有資格*identity (n) identify (v) 認出MorphemesThe most basic element of meaning is traditionally called morpheme.The smallest meaningful components of words.E.g.: boyish孩子氣的;男孩似的boy, -ish (two morphemes)3) 3.2.2 Types of morphemes (1)Those that may constitute words by themselves,自由形式的詞素本身就是一個詞，可以單獨使用e.g.: boy, girl, table, nation.Free morphemes PK Bound morphemesThose that cannot occur alone,Bound morpheme includes two types: roots and affixes.e.g.: -s in dogs, -ed in worked, dis- in dislike, un- in unable.A certain affix here refers to an inflectional affix: grammatical endingsTypes of morphemes (2)Root: the part left when all the affixes are removed 词根Stem: the part left when a certain affix is removed 词干Affix: the part which is attached to other words; usually bound morphemes 词缀E.g.: friend as in unfriendliness.Roots may be:Free: those that can stand by themselves,E.g.: black+board; nation+-al; orbound: those that cannot stand by themselves,E.g.: -ceive in receive, perceive, conceive.Affix: normally divided into:Prefix (dis-, un-) prefixes occur at the beginning of a word.suffix (-en, -ify) at the endinfix (foot-feet) in the middlePrefix 前綴mis- 誤mistake 誤解over- 過分overdo 做得過分Prefixed modify the meaning of the stem, but usually do not change the part of speech of the original word.Exceptions are the prefixes be-, and en(m)-.Added to adjectives or nouns they turn the words into verbs.Suffixes modify the meaning of the original word and in many cases change its part of speech.Accordingly, there are noun-forming suffixes, adjective-forming suffixes, adverb-forming suffixes, and verb-forming suffixes.-er teacher, writer-ician “...(專)家,...工作者”electrician電工-bility “能力”possibility可能性-hood “時期”childhood幼年時期,童年時期-age “(人生的)某一時期”orphanage孤兒-ary (adj) elementary基本的, secondary第二位的-ful (adj) beautiful美麗的, delightful愉悅的, sorrowful悲傷的-en (V 使..) weaken使變弱, darken, deepen-ize (v …化) modernize使現代化-ly (adj+ -ly=adv n + -ly= adj) slowly慢慢地, friendly友善的-ward (往…方向) forward(adv)往前, eastward往東Stem: a morpheme or combination of morphemes to which an inflectional affix may be added,e.g.: friend+-s; write+-ing, possibility+-es.A stem can be a bound root, a free morpheme, or a derived form itself.e.g.:*toler- (root) + affix –ate: tolerate忍受*quick (free morpheme) + affix –ly: quickly *careless (a derived form) + affix lessInflectional affix: Bound morphemes which are for the most part purely grammatical markers, signifying such concepts as tense, number, case etc.e.g.: -ed, -s, -erHe had regular features. 他五官端正。