Words which tell us something about nouns are called adjective. Adjectives tell us about the colour, shape, size or condition of nouns.
In a sentence, we place an adjective:
a) before a noun
e.g. It is tall building.
b) after a verb "to be" (is, are, was, were).
e.g. The market is noisy.
a) the positive degree to compare two
equal things or people.
e.g. Miss Lim is as young as Miss Yi.
b) the comparative degree to compare
two unequal things or people.
e.g. Miss Pei is younger than Miss Lim.
c) the superlative degree to compare
three or more unequal things or people.
e.g. Miss Yip is the youngest among them.
Some adjectives form their comparatives and superlatives with more and most.
有些形容词以 more 和 most 构成比较级和最高级。
Basic of Adjective