Advanced Bilingual Ed. Subscribe to our newsletter. An adjective describes how something 'is'. For this reason, we usually use the verb 'to be' when using adjectives. Adjectives are used to describe nouns.
Adjectives describe nouns.
The adjective is always invariable. Adjectives don't have a singular and plural form OR a masculine, femine and neuter form. Never add a final -s to an adjective. Adjectives can also be placed at the end of a sentence if they describe the subject of a sentence. My doctor is excellent.