This Spanish Easy Review grammar quiz will challenge you on using the Spanish definite article - the. In English there is only one definite article. That article is the word 'the' which is also classified as an adjective. Why an adjective? Because it helps to describe or define another word. For example, let’s look at the word 'book'. What kind of a book? A blue book or a big book or a new book. The words blue, big and new are all adjectives as they describe the book. Now let’s ask the question: Which book? The book on the table. The definite article 'the' is describing what kind of a book.