语言学第四章.ppt
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_1.gif)
![资源得分’ title=](/images/score_05.gif)
《语言学第四章.ppt》由会员分享,可在线阅读,更多相关《语言学第四章.ppt(59页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、语言学第四章现在学习的是第1页,共59页outline4.1 Introduction4.2 Word Classes 4.3 The Prescriptive Approach 4.4 The Descriptive Approach 4.4.1 Structural analysis 4.4.2 Immediate constituent analysis4.5 Constituent Structure Grammar 4.6 Transformational Grammar 4.7 Systemic Functional Grammar 现在学习的是第2页,共59页4.1 Introd
2、uction Syntax:study of the internal structures of sentence and the rules for the combination of words.Difference between morphology and syntaxMorphology:the internal structure of words Syntax:the combination of words 现在学习的是第3页,共59页Syntactic rules(1)a.The hunter fears the cries of the blackbirds.b.Th
3、e blackbirds fear the cries of the hunter.(2)a.Jack looked up the word.b.Jack looked the word up.(3)*Cries fear the the of hunter blackbirds the.Conclusion:The structure of sentence such as word order can change the meaning.Every sentence is a sequence of words but not every sequence of words is a s
4、entence.Sentence formation has rules,so that we have well/ill formed or(un)grammatical sentences.现在学习的是第4页,共59页4.2 Word Classes Nouns are words used to refer to people,objects,creatures,places,events,qualities,phenomena and abstract ideas as if they were all things.cats,dogs,war,wedding,courage,beau
5、ty,rain,love,hatredAdjectives are words that describe the thing,quality,state or action which a noun refers to.beautiful,redVerbs are words used to refer to various actions and states involving the“things”in events.run,walk,seem 现在学习的是第5页,共59页Adverbs are words that describe or add to the meaning of
6、a verb,an adjective,another adverb,or a sentence,and which answers the questions introduced by how,where,when,etc.carefully,slowly,then,nowPrepositions are words used with nouns in phrases providing information about time,place and other connections involving actions and things.现在学习的是第6页,共59页Pronoun
7、s are words which may replace nouns or noun phrases.Conjunctions are words used to connect and indicate relationships between events and things.Articles,Exclamations,Numerals现在学习的是第7页,共59页The definitions above are useful for identifying most forms,but they are never completely accurate.A different a
8、pproach might focus on some other properties of the word classes.For example,a noun can be defined as a form that comes after an article(a,an and the)and can take inflections for possessive(-s)and plural(-s).Of course,not all nouns(eg.information and mud)have all these characteristics.现在学习的是第8页,共59页
9、Phrase structure rulesRepresentation(通过词性表征句法通过词性表征句法):The hunter fears the cries of the blackbirds Art+N +V+Art+N+Prep+Art +NThe rules which govern the structure of phrases are known as phrase structure rules or rewrite rules.Such rules allow for the generation of grammatical sentences in a languag
10、e.现在学习的是第9页,共59页4.3 The Prescriptive Approach Definition:An approach taken by some grammarians,mainly in eighteenth-century England,who lay down rules for the correct or“proper”use of English by following Latin.现在学习的是第10页,共59页(a)You must not split infinitives.(b)You must not end a sentence with a pr
11、eposition.To boldly go.To go boldly.Preposition is not a word you can end a sentence with.(funny)现在学习的是第11页,共59页4.4 The Descriptive Approach Definition:An approach taken throughout the 20th century which attempts to describe the regular structures of the language as it is used by collecting samples.
12、Various techniques may be employed.现在学习的是第12页,共59页4.4.1 Structural analysis A descriptive approach studying the distribution of linguistic forms in a language by means of test frames,which can be sentences with empty slots in them.(分布、测试框架、替代、纵聚合关系)(分布、测试框架、替代、纵聚合关系)(4)The _ makes a lot of noise.(no
13、uns:car,radio,child,dog)(5)I heard a _ yesterday.(nouns:car,radio,child,dog)现在学习的是第13页,共59页(6)_ makes a lot of noise.(noun phrases:it,the car,a dog,Peter,a new car,the scholar with an American accent)(7)I hear _ yesterday.(noun phrases:it,the car,a dog,Peter,a new car,the scholar with an American ac
14、cent)现在学习的是第14页,共59页4.4.2 Immediate constituent analysis(Bloomfield:直接成分分析法直接成分分析法)Language is linear and hierarchical.We can analyze language from its largest level to the smallest level,that is from its construction to its constituents by means of substitutability and expansion.The first divisions
15、 or cuts of a construction are called immediate constituents and the final cuts as the ultimate constituents.现在学习的是第15页,共59页The first divisions or cuts of a construction are called immediate constituents and the final cuts as the ultimate constituents.The approach to divide the sentence up into its
16、immediate constituents by using binary cutting until obtaining its ultimate constituents is called immediate constituent analysis(IC).现在学习的是第16页,共59页Immediate constituent analysis(IC analysis)has two ways of representation:Tree diagram brackets现在学习的是第17页,共59页Tree diagram(8)The man bought a car.现在学习的
17、是第18页,共59页BracketsBrackets can also be used but are arguably less easy to read.(9)a.the man bought a car b.the man bought a car c.the man bought a car d.the man bought a car现在学习的是第19页,共59页Merit:Solving Disambiguityold men and women 现在学习的是第20页,共59页4.5 Constituent Structure Grammar(成分结构语法成分结构语法)A gram
18、mar which analyzes sentences using only the idea of constituency,which reveals a hierarchy of structural levels.The main principle is labeling and bracketing based on the idea that linguistic units can be parts of larger constructions or can themselves be made up of smaller parts.(binary and verb-ce
19、ntered)现在学习的是第21页,共59页 Tree diagram BinaryVerb-centered现在学习的是第22页,共59页Generative Rules(早期转换语法的概念早期转换语法的概念短语结构语法短语结构语法)The syntax of a language is then seen as a set of rules which generate sentences in that language.SNPVPVPVtr.NPNPArtNVtr.buy,sell,build,repair,wash,etc.Nman,woman,car,house,bicycle,e
20、tc.Arta,an,the 现在学习的是第23页,共59页(12)a.The man bought a car.b.The man sold a car.c.The woman repaired the bicycle.Sentences generated:现在学习的是第24页,共59页More complex rules There is a large number of sentences in English that such rules cannot produce.This set of rules has very limited generative power.The
21、above rules only deal with simple noun phrases and transitive verbs.They do not allow us to deal with any part of the verb structure such as tense,modals or aspect.现在学习的是第25页,共59页现在学习的是第26页,共59页Sentences generated:(13)a.The man sells the car in the garage.b.The woman washes the bicycle in the street
22、.c.The boy repairs the bicycle in the house.现在学习的是第27页,共59页Merit:Solving Disambiguity(14)The boy repairs the bicycle in the house.in the house around the corner(Recursion,Recursiveness递归性递归性)Mary helped George.Cathy thought Mary helped George.John said Cathy thought Mary helped George.现在学习的是第28页,共59
23、页A childrens rhyme:This is the house that Jack built.This is the cat that lived in the house that Jack built.This is the dog that chased the cat that lived in the house that Jack built.This is the man that keeps the dog that chased the cat that lived in the house that Jack built.This is the woman th
24、at married the man that keeps the dog that chased the cat that lived in the house that Jack built.现在学习的是第29页,共59页Some problems of CSG:A.Lexical selection restriction With simple constituent structure rules,any noun can be introduced in a combination with any verb.This does not happen in natural lang
25、uage.We cannot say:(15)*The belief washed an apple.现在学习的是第30页,共59页B.Discontinuousness (16)The boy cleaned the room up.(17)The student looked the word up in the dictionary.C.Relation between sentences that seem to be closely related structurally and semantically (18)a.Brian hit George b.George was hi
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 语言学 第四
![提示](https://www.taowenge.com/images/bang_tan.gif)
限制150内