s the result of his research, Chomsky proposes that the grammar of all languages share mon framework, which he calls a transformational grammar. That is the transformational syntax we call here.РDealing with Transformational syntax here, we just follow Chomsky and try to prove our petence which enables us bine words into sentences in endlessly novel way.Р4.2 Categories范畴Р4.2.1 Word-level categories? Category refers to a group of linguistic items which fulfill the same or similar functions in a particular language e.g. a sentence ? a noun phrase? a verbРThe most central categories to the syntactic study are the word-level categories (traditionally, called parts of speech) . ? ? Here, word-level categories are divided into two kinds: ? major lexical categories and ? minor lexical categories.