Adjectives, countries and nationalities

Modification with adjective

yes/ no questions and short answers with be: 

Are you our teacher? Yes, I am

Are you and Andrea nurses?  No, we aren´t

Adjetives:

Adjective describes nouns and pronouns. they can go after the verb be or before and noun. 

Examples:

the girl was wearing a beautiful dress.

Adrien is a very spoiled baby.