For example, my very good friend Peter is a phrase that can be used in a sentence as if it were a noun, and is therefore called a noun phrase. A phrase typically serves the same function as a word from some particular word class. The noun aerobics has recently given rise to the adjective aerobicized. This has the potential to give rise to new words. Words in one class can sometimes be derived from those in another. The lexeme run has the forms runs, ran, runny, runner, and running. Lexemes may be inflected to express different grammatical categories. For example, run can serve as either a verb or a noun (these are regarded as two different lexemes). On the other hand, most words belong to more than one-word class. It is not usually possible to tell from the form of a word which class it belongs to except, to some extent, in the case of words with inflectional endings or derivational suffixes. English words are not generally marked for word class. Linguists generally accept nine English word classes: nouns, verbs, adjectives, adverbs, pronouns, prepositions, conjunctions, determiners, and exclamations. Interjections are another word class, but these are not described here as they do not form part of the clause and sentence structure of the language. Determiners, traditionally classified along with adjectives, have not always been regarded as a separate part of speech. For example, it is rare for a new pronoun to enter the language. The others are considered to be closed classes.

Nouns, verbs, adjectives, and adverbs form open classes вЂ“ word classes that readily accept new members, such as the noun celebutante (a celebrity who frequents the fashion circles), and other similar relatively new words. Unlike nouns in almost all other Indo-European languages, English nouns do not have grammatical gender. Nouns form the largest word class, and verbs the second-largest. Д®ight 'word classes' or 'parts of speech' are commonly distinguished in English: nouns, determiners, pronouns, verbs, adjectives, adverbs, prepositions, and conjunctions. For other pronouns, and all nouns, adjectives, and articles, grammatical function is indicated only by word order, by prepositions, and by the ' Saxon genitive or English possessive' ( -'s). The personal pronouns retain morphological case more strongly than any other word class (a remnant of the more extensive Germanic case system of Old English). Modern English has largely abandoned the inflectional case system of Indo-European in favor of analytic constructions. Divergences from the grammar described here occur in some historical, social, cultural and regional varieties of English, although these are more minor than differences in pronunciation and vocabulary. This article describes a generalized, present-day Standard English вЂ“ a form of speech and writing used in public discourse, including broadcasting, education, entertainment, government, and news, over a range of registers, from formal to informal. This includes the structure of words, phrases, clauses, sentences, and whole texts. English grammar is the way in which meanings are encoded into wordings in the English language.

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