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FUNCTION (Syntactic Properties)

FORM (Morphological Properties)

The formal criterion concerns the inflexional and derivational features of words belonging to a given class, i.e. the grammatical categories (the paradigms) and derivational (stem-building, lexico-grammatical) morphemes.

This criterion is not always reliable as many words are invariable and many words contain no derivational affixes. Besides, the same derivational affixes may be used to build different parts of speech:

-ly can end an adjective, an adverb, a noun: a daily;

-tion can end a noun and a verb: to position.

Because of the limitation of meaning and form as criteria we mainly rely on a word's function as a criterion of its class.

FUNCTION (Syntactic Properties)

Syntactic properties of a class of words are the combinabitity of words (the distributional criterion) and typical functions in the sentence.

The three criteria of defining grammatical classes of words in English may be placed in the following order: 1) function, 2) form, 3) meaning.

 

Parts of speech are heterogeneous classes and the boundaries are not clearly cut especially in the area of meaning. Within a part of speech there are subclasses which have all the properties of a given class and subclasses which have only some of these properties and may have features of another class.

So a part of speech may be described as a field which includes both central, most typical members, and marginal, less typical members. Marginal areas of different parts of speech may overlap and there may be intermediary elements with contradictory features (statives, modal words, pronouns).

 

Words belonging to different parts of speech may be united by a common feature and constitute a class cutting across other classes (for example, determiners). So the part-of-speech classification involves overlapping criteria and scholars single out from 9 to 13 parts of speech in Modern English.

 

Alongside of the three-criteria principle of dividing words into grammatical classes there are classifications based on one principle, morphological or syntactic.

The founder of English scientific grammar H.Sweet finds the following classes of words: noun-words, including some pronouns and numerals; adjective-words, including pronouns and numerals; verbs and particles. The term particles denotes words of different classes which have no categories.

The opposite criterion, distributional, is used by the American scholar Ch.Fries. Each class of words is characterized by a set of positions in the sentence, which are defined by substitution testing.

As a result of distributional analysis Ch.Fries singles out four main classes of words, roughly corresponding to nouns, verbs, adjectives and adverbs, and 15 classes of function words.

 

2. Both the traditional and the syntactico-distributional classifications divide parts of speech into notional and functional- Notional parts of speech are open classes — new items can be added to them, they are indefinitely extendable. Functional parts of speech are closed systems, including a limited number of members. As a rule, they cannot be extended by creating new items.



The main notional parts of speech are nouns, verbs, adjectives and adverbs. Members of these four classes are often connected by derivational relations: strength strengthen; strong strongly.

Functional parts of speech are prepositions, conjunctions, articles, particles. The distinctive features of functional parts of speech are: 1) very general and weak lexical meaning; 2) obligatory combinability; 3) the function of linking and specifying words.

Pronouns constitute a class of words which takes an intermediary position between notional and functional words. On the one hand, they can substitute for nouns and adjectives, on the other hand, pronouns are used as connectives and specifiers.

There may be also groups of closed-system items within an open class (notional, functional and auxiliary verbs).

A word in English is very often not marked morphologically and it is easy for words to pass from one class to another (round as a noun, adjective, verb, preposition). Such words are treated either as lexico-grammatical homonyms or as words belonging to one class.

 


Date: 2016-01-03; view: 1442


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