【文章內(nèi)容簡介】 l and derivational affixes. Affixes attached to the end of words to indicate grammatical relationships are inflectional, thus known as inflectional morphemes. The number of inflectional affixes is small and stable.Derivational affixes. As the term indicates, derivational affixes are affixes added to other morphemes to create new words. Derivational affixes can be further divided into prefixes and suffixes. Prefixes e before the ward and the suffixes after the word.9 A root is the basic form of a word which cannot be further analysed without total loss of identity. The root, whether free or bound, generally carries the main ponent of meaning in a word. Root is that part of a wordform that remains when all inflectional and derivational affixes have been removed. 10 A stem may consist of a single root morpheme as in iron or of two root morphemes as in a pound like handcuff. It can be a root morpheme plus one or more affixational morphemes as in mouthful. A stem can be defined as a form to which affixes of any kind can be added. Chapter 4 Word Formation Ⅱ 1 Wordformation: affixation(30%40%), panding(28%30%), conversion(26%), shortening(8%10%), blending(1%) 2 Affixation is generally defined as the formation of words by adding wordforming or derivational affixes to stems. This process is also known as derivation, for new words created in this way are derived from old forms. The words formed in this way are called derivatives. Prefixation is the formation of new words by adding prefixes to stems. Prefixes do not generally change the wordclass of the stem but only modify its meaning. Nine groups: Negative prefixes, Reversative prefixes, Pejorative prefixes, Prefixes of degree or size, Prefixes of orientation and attitude, Locative prefixes, Prefixes of time and order, Number prefixes, Miscellaneous prefixes. Suffixation is the formation of new words by adding suffixes to stems. Suffixes have only a small semantic role, their primary function being to change the grammatical function of stems. In other words, they mainly change the word class. When the suffix under discussion is added to the stem, whatever class it belongs to, the result will be a noun or an adjective. Noun suffixes 1) Denominal nouns: a. Concrete, b. Abstract.2) Deverbal nouns: a. The following suffixes bine with verb stems to create largely nouns denoting people, b. Suffixes of this group added to verb stems to produce largely abstract nouns, denoting action, result, process, state, etc3) Deadjective nouns4) Noun and adjective suffixes Adjective suffixes 1) Denominal suffixes2) Deverbal suffixesAdverb suffixesVerb suffixes3 Compounding, also called position, is the formation of new words by joining two or more stems. Words formed in this way are called pounds. So a pound is a lexical unit consisting of more than one stem and functioning both grammatically and semantically as a single word. 4 Compounds differ from free phrases in the following three aspects: 1). Phonetic features In pounds the word stress usually occurs on the first element whereas in noun phrases the second element is generally stressed if there is only one stress. In cases of two stresses, the pound has the primary stress on the first element and the secondary stress, if any, on the second whereas the opposite is true of free phrases 2). Semantic features Compounds are different from free phrases in semantic unity. Every pound should express a single idea just as one word. 3). Grammatical features A pound tends to play a single grammatical role in a sentence, for example, a verb, a noun, or an adjective. In adjectivenoun pounds, the adjective element cannot take inflectional suffixes. 5 Conversion is the formation of new words by converting words of one class to another class. Since the words do not change in morphological structure but in function, this process is also known as functional shift. Conversion is generally considered to be a derivational process whereby an item is adapted or converted to a new word class, without the addition of an affix. Hence the name zeroderivation. 6 Many simple nouns convened from verbs can be used with have, take, make, give etc. to form phrases to replace the verb or denote a brief action. Words like handout, standby, layby, teachin, shutdown are all converted from phrasal verbs. 7 Unlike verbs, not all adjectives which are converted can achieve a full noun status. Some are pletely converted, thus known as full conversion, others are only partially converted, hence partial conversion. Words fully converted. A noun fully converted from an adjective has all the characteristics of nouns. It can take an indefinite article or (e)s to indicate singular or plural number. Words partially converted. Nouns partially converted from adjectives do not possess all the qualities a noun does. They must be used together with definite articles. 8 Blending is the formation of new words by bining parts of two words or a word plus a part of another word. Words formed in this way are called blends or pormanteau words. The overwhelming majority of blends are nouns。 very few are verbs and adjectives are even fewer. Blends are mostly used in writing related to science and technology, and to newspapers and magazines. 9 Another mon way of making a word is to shorten a longer word by cutting a part off the original and using what remains instead. This is called clipping. 10 Acronymy is the process of forming new words by joining the initial letters of names of social and political organizations or special noun phrases and technical terms. Words formed in this way are called initialisms or acronyms, depending on the pronunciation of the words. Initialisms are words pronounced letter by letter. Letters represent full words: VOAVoice of America Letters represent constituents in a pound or just parts of a word: TVtelevision Acr