The HyperTextBooks Daniel Kies
Department of English
College of DuPage
Modern English Grammar
English 2126
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Form and Function of Word Classes in English


   

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Although the word seems to be a fundamental unit of language at first glance, one quickly discovers that words themselves have recognizable constituents, each one expressing a consistent meaning. Those constituents, morphemes, form the smallest units of language having significance in grammar. If we examine sentence (3) again, we see not only that the words are meaningful but also that parts of the last two words have meaning in themselves:

(3) The water evaporated quickly.

The verb evaporated and the adverb quickly each seem to possess two component parts:

The water evaporate (a verb) & ed (past tense ending) quick (adjective) & ly (adverb ending)

The word endings above have consistent meanings to English speakers, so that any -ed found on the end of a verb will be interpreted as the past tense of that verb, and form part of a system of word endings commonly used with verbs (verb inflections). Similarly, the word ending -ly expresses consistent meaning in that nearly any adjective joined by the ending -ly will function as an adverb. Secondly, the -ly ending forms part of a system of endings, all of which function to create new word types from old. For example, -ly creates adverbs from adjectives (quickly), -ness creates nouns from adjectives (greatness), -er/-or creates nouns from verbs (speaker/actor), -ate creates verbs from nouns (chlorinate), - able creates adjectives from verbs and nouns (disposable, fashionable), etc.

Whenever a constituent of a word satisfies both of those conditions (consistent meaning and systematic use), such a constituent is called a morpheme.

When we look closer at language, we further discover that morphemes can be subcategorized. Whenever we take a category of language, such as the morpheme, and subcategorize all the significant, meaningful distinctions within that category, we are moving along a scale called delicacy. That is, as we work at subcategorizing the relevant features of language, the finer will be our sense of all the important details, and more 'delicate' will be our description of language.

As the figure below illustrates, morphemes can be subcategorized into two large subgroups -- lexical morphemes and grammatical morphemes.

English Morphology

Lexical morphemes have consistent meaning beyond whatever grammatical information they also carry. The great bulk of a language's word stock is carried in its lexical morphemes. Lexical morphemes are subcategorized into bases (such as deny) and affixes (such as un- or -able). (Some morphemes often "stand alone" as words in a language, and when any morpheme can "stand alone" as a word, it is also called a free morpheme. Other morphemes do not occur as free words and can only occur in combination with other morphemes. Such morphemes are then known as bound morphemes, such as un- and -kempt in the word unkempt.) Affixes are subcategorized by the position they regularly occupy relative to a base morpheme. Those affixes that occur before a base are prefixes (such as un- in undeniable), those occurring after a base are suffixes (such as -able in undeniable), and those within a base are infixes. English does not use infixes in any great way, though there are several informal constructions in spoken English that resemble infixes, such as fan-damn-tastic, where the insertion of a middle element helps to add emphasis to the whole structure.

Some Examples of Lexical Morphemes in English
Bases Affixes
Nouns Verbs Adjectives Adverbs Prefixes Suffixes
dog have silly very anti ness
chart touch hot too con ion
word be strong now di ity
child stay new again pro or
student go quick then re al

Grammatical morphemes, on the other hand, function only to express grammatical information. Some grammatical morphemes are free morphemes such as prepositions like under, to, or of, and those are called function words. The meaning of the preposition by in the sentence The letter was written by Dave expresses only the grammatical information that Dave was the 'agent' responsible for writing the letter. Function words, like lexical morphemes, can be ambiguous; that is, they have more than one meaning. The preposition by in the sentence The letter is by the lamp has a different meaning (to indicate 'location'), although the preposition is still a function word.

Some Examples of Grammatical Morphemes in English
Function Words Inflections
Pronoun Preposition Auxiliary Conjunction Article Number Case Tense Aspect Comparison
Comparative Superlative
she of be and a -s -'s -s -ed -er -est
he to have but an -en -ed -ing
it on do or the -um -en
we under may so -a
our between might yet
them with shall when
their by should until
you in will that
any for would because
some from can since
someone over could when
everyone above must
that through ought to
who at need to

Each function word expresses a specific bit of grammatical information, which in isolation may seem small and insignificant, but is really quite important. Sometimes people believe that grammatical morphemes are relatively meaningless when compared to all the meaning expressed by lexical morphemes. But think about how hard it would be to communicate without function words: Oscar Wilde's aphorism "The cynic knows the price of everything, but the value of nothing" would read only "Cynic knows price, value" if we ignored the grammatical function words.

The second category of grammatical morphemes are called inflections. Inflections are word endings, like suffixes, but unlike suffixes, inflections express only grammatical information. For examples, number inflections on nouns and verbs in English distinguish singular and plural forms. The -s ending is the regular noun inflection to distinguish the singular noun house from the plural noun houses. The -s inflection on the verb indicates the third person, singular, present tense, such He hits hard. Other inflections indicate the grammatical case of nouns, such as the genitive ending -'s to indicate "possessive" meaning as in Dave's letter, or their gender. Modern English no longer distinguishes nouns on the basis of grammatical gender, but English does have a lexical morpheme, a suffix, that marks nouns a feminine forms, such as the use of -ess to indicate the feminine, as in hostess, waitress, stewardess, and poetess. In English, adjectives and adverbs are marked for comparison, using the -er inflection for the comparative, as in faster, and the -est inflection for the superlative, as in fastest.

Unlike inflections, affixes carry more information than grammatical information alone. For example, the suffix -ful means "to be full of," as in the words careful, sorrowful, and joyful. Although affixes are known by the lexical information they carry, affixes also carry grammatical information. The suffix -ful, for instance, also marks the word grammatically as an adjective. In other words, when nouns like sorrow, joy, or care add the -ful suffix, they function as adjectives. This phenomenon is a common process in language called derivation, and the study of how affixes 'convert' one word into another is called 'derivational morphology.'

Irregular morphemes differ from the regular morphemes in one of two ways: they may use inflections that are less common than the regular inflection, such as the use of -(r)en to indicate plural nouns in forms like children or oxen, or they may change the phonological (and graphic) form, in a process known as suppletion, as in went as the past tense of go, or feet as the plural of foot.

Word Classes

The word classes of traditional grammar are a combination of the bases and the function words. The bases are called the open classes, so named because it is relatively easy to create new words in each of those categories, while the function words are called the closed classes, since it is less common (though not impossible) for speakers of a language to create new vocabulary in those categories. Slang illustrates the creativity of speakers to invent new vocabulary in the open classes, such as the noun homeboy (a friend), or the verb to ralph (to vomit), or the adjective rad (good). But when was the last time someone invented new vocabulary in one of the closed classes?

Speakers recognize word classes through three different, but complementary, processes - the use of word endings, function words, and word order. As in many other languages, English employs a great number of word endings to signal different word classes.

Some Examples of Word Endings in English
Nouns Verbs Adjectives Adverbs
Suffixes
-ster gangster -ify beautify -ful useful -ly happily
-eer profiteer -ize symbolize -less speechless -ward onward
-er teenager -en ripen -ly manly -wise clockwise
-let booklet -y meaty -like childlike
-ette cigarette -ish foolish
-ess actress -able readable
-y daddy -ed tired
-hood childhood
-ship friendship
-dom kingdom
-ry rocketry
-ist stylist
-ism idealism
-ant inhabitant
-ment amazement
-age leverage
-ness meanness
-ity sanity
Inflections
-s caps -s helps -er shorter -er sooner
-en oxen -ed located -est quickest -est soonest
-'s Mike's -ing writing
-en taken

However, word endings are not sufficient to identify all members of a word class, nor can endings identify all word classes. Therefore, speakers also rely on function words and word order to distinguish one class from another. For example, consider the two quotes below. Can you tell which words are adjectives or adverbs, words that modify or describe?

'Twas brillig, and the slithy toves
Did gyre and gymble in the wabe

- Lewis Carroll, "The Jabberwocky" in Through the Looking Glass

The gloopy malchicks scattered razdrazily to the mesto.

- Anthony Burgess, A Clockwork Orange

Many people have the sense that the words brillig, slithy, gloopy, and razdrazily are the words that modify. That sense is a combination of factors, including the suffixes -y (also spelt -i- when a second ending is used on the same word, as in razdrazily) and -ly - two suffixes that mark adjectives and adverbs. But word endings are not the only clues to help us find the modifiers. Each sentence also gives us clues from function words and word order. In English, it is common to find noun phrases with a predictable structure of Determiner + Adjective + Noun (the clever children), so the combination of both determiners (the) marking the beginning of noun phrases and word order in the sentences above help us interpret slithy and gloopy as adjectives. It is also common in English to find adjectives after forms of the verb be when the verb functions as the 'copula' verb, the linking verb, as in Elizabeth is clever. So in the first sentence, the verb was (part of the poetic fusion of it was into 'twas) helps us to interpret brillig as an adjective. Finally, it is also common to find adverbs after verbs in English, as in Emily learns quickly. That fact helps us to interpret razdrazily as an adverb in the last example sentence.

In summary, then, it is fair to say that we look for patterns when we do grammar, patterns of word endings, function words, and word/morpheme order. Patterns are crucial in helping us discover the constituents of language: recognizing patterns in distribution and meaning becomes the process through which humans discover the grammatical structures of their languages.





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