How to USE ADJECTIVES

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 and pronouns. 
Example: He is a good doctor.
They Rule: Adjectives describe nouns. The adjective is always invariable.

Example: beautiful trees,
              they are happy
Be careful!
Adjectives don't have a singular and plural form OR a masculine, femine and neuter form.
Adjectives are always the same! Never add a final -s to an adjective.
NOT!!: difficults books

Adjectives can also be placed at the end of a sentence if they describe the subject of a sentence. Example: My doctor is excellent.

Rule: Adjectives are placed before the noun.

Example: a wonderful book
             very interesting people

Be careful!
Don't place an adjective after the noun
NOT!!: an apple red