PARTS OF SPEECH The structures realizing sentence elements are composed of units which can be referred to as parts of speech. They include: CLOSED-SYSTEM ITEMS These items are closed in the sense that they cannot normally be extended by the creation of additional members. Article: the, a, an Demonstrative: this, that Pronoun: he, she, one, anybody, which Preposition: of, at, in, without, off Conjunction: that, and, when, although Interjection: oh, ah, ugh, phew OPEN-CLASS ITEMS This class of items is open in the sense that it is indefinitely extendable. New items can be created at any time. Noun: Denise, answer, chair, box Adjective: happy, steady, round Adverb: steadily, really, very Verb: search, grow, chat, play RANGE OF POSSIBILITIES FOR CLOSED-SYSTEM AND OPEN-CLASS ITEMS: John George Henry Dennis Fabiola Vickie Oscar Viridiana Daniel … may can will must should … … ____ sit jump eat run hurry … … … by at from on along … … ___ this that ___ fountain tree window blckboard girl path door … … Function & Content Words (From Wikipedia, the free encyclopedia) Function words (or grammatical words) are words that have little lexical meaning or have ambiguous meaning, but instead serve to express grammatical relationships with other words within a sentence, or specify the attitude or mood of the speaker. Words which are not function words are called content words (or lexical words): these include nouns, verbs, adjectives, and most adverbs, though some adverbs are function words (e.g. then, why). Dictionaries define the specific meanings of content words, but can only describe the general usages of function words. By contrast, grammars describe the use of function words in detail, but have little interest in lexical words. In English, only function words begin with voiced th- [ð] (see Pronunciation of English th). Lexical Density This is a measure of how much information there is in a particular piece of writing. Lexical words are perhaps more commonly known as content words or information words. They are the words that carry information. Consider the sentences below.:(The lexical words are in bold type) This is a measure of how much information there is in a particular piece of writing. Lexical words are perhaps more commonly known as content words or information words. They are the words that carry information. Consider the sentences below.:(The lexical words are in bold type) Halliday defines lexical density as '...a measure of the density of information in any passage of text, according to how tightly the lexical items (content words) have been packed into the grammatical structure. It can be measured, in English, as the number of lexical words per clause.' item viddy Part of speech verb Type Open-class