Adjectives are used to describe nouns. In English, an adjective usually comes before the noun it pertains to (for example a red apple). The kinds of adjectives are as follows:
Adjectives of Quantity are the words that tell us about the quantity of nouns.
Adjectives of Number tell us about the number of a noun.
Possessive Adjectives are used to indicate possession or ownership of something.
Interrogative Adjectives are used to ask questions with reference to a particular noun.
Demonstrative Adjectives are used to point out specific people or things.
Adjectives can be formed from other parts of speech like nouns, verbs and adjectives by adding suffixes after the words. Example: Colour + ful – Colourful, Decorate + ive – Decorative, Green + ish – Greenish.
There are three forms of comparisons used for comparing adjectives: positive, comparative and superlative. Examples: Bright----Brighter----Brightest; Difficult---More Difficult---Most Difficult; Good---Better---Best.
It is also possible to change the degree of comparison without changing the meaning of the degree. Following is an example:
Very few cities in Australia are as big as Sydney. – Positive
Sydney is bigger than most other cities in Australia. – Comparative
Sydney is the biggest city in Australia. – Superlative