ABSTRACT
This chapter deals with words that belong to a number of word classes. All the word classes that they belong to are functional and closed in nature rather than open: word classes such as pronoun and determiner and prepositions, not to mention personal pronouns. The chapter also focuses on adverbs and conjunctions, which are traditionally recognised as content/open word classes. However, they do not admit new members as freely as the central open and content word classes: nouns, adjectives and verbs. A number of words in the chapter belong to the word class 'conjunction'. Conjunctions are words that join two clauses together. There are two types: coordinating conjunctions and subordinating conjunctions. The coordinating conjunctions, such as 'and', 'but' and 'or', which join two equal clauses together. The subordinating conjunctions place a subordinate clause inside another.
