In Lesson 8 of How to Read Biblical Greek, Dr. Abidan Shah introduces adjectives, how they modify nouns, the different types (quality, quantity, demonstrative, possessive, interrogative, identical), and the two ways they function in a sentence: attributively and predicatively.
The heart of the lesson is the second declension adjective agathos (good), declined fully in the masculine, feminine, and neuter, singular and plural. Dr. Shah then shows how the placement of the definite article changes meaning entirely in Greek, the good prophet versus the prophet is good, and introduces the substantival use, where the noun is implied rather than stated. The lesson closes with adjectives whose stems end in e, i, or r (using micros, meaning little), where the feminine declension shifts, and a vocabulary set of words occurring 95 to 109 times in the Greek New Testament.