An adjective is a part of speech. Adjectives describe or modify nouns and pronouns in a sentence. In regards to the noun, adjectives explain "Which one?" "How many?" "What kind?" "How much?" and "Whose." Colors, numbers and articles are all common adjectives.

Adjective Articles

There are two types of articles, definite and indefinite. "The" is the definite article. "A" and "an" are the indefinite articles. The definite article is used when you are discussing a specific noun, for example "the cat." The indefinite "a" or "an" is used for nonspecific nouns, for example "a cat." The definite article can be used to pluralize "the cats," but indefinite articles are singular only.

The simple rule for the indefinite article is that "a" precedes nouns that start with a consonant while "an" precedes nouns that begin with a vowel.

Countable Adjectives

Most adjectives can be used to describe both countable nouns, for example "the blue whale(s)," and uncountable nouns, for example "the blue sky." However there are some adjectives that change depending on whether the noun is countable or is uncountable. A common example of this are the words "little," used with uncountable nouns, and "few," which defines countable nouns. For example, "There is little hope, there are few quarters."

Demonstratives

There are four adjectives called "demonstratives." The first two, "this" and "that" are singular while "these" and "those" are the plural demonstratives. Not only do they describe number, they also describe distance. For instance "this man" would describe a man nearby, while "that man" indicates distance. "These women," indicates closeness while "those women" indicates distance from the observer.

Agreement of Number

Numbers can also be adjectives but must also agree with the noun. The number "one" is always followed by a singular noun. You cannot say "one cats." While subsequent numbers must be followed by a plural noun. You cannot say "two dog."

Quantifiers

Quantifiers are adjectives that state amount without using a specific number. These are used with plural or uncountable nouns and must agree in tense. Examples of these include "plenty" and "enough."

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