Articles (a, an, the) are part of a category of words known as noun markers or determiners. Standard English uses noun markers to help identify the nouns that follow. In addition to articles, noun markers include
Articles and other noun markers always appear before nouns. Sometimes other modifiers, such as adjectives, come between a noun marker and a noun.
In most cases, do not use an article with another noun marker, such as this.
EXCEPTION:Some expressions consist of an article and another noun marker: a few, the most, all the.
Exercise: Articles and types of nouns
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