This document discusses how adjectives must agree in number and gender with the nouns they modify in Spanish. It provides examples of past participles used as adjectives that correctly match the feminine singular noun "casa" and feminine plural noun "puertas" in gender and number. Links are included for additional grammar exercises on using past participles as adjectives in Spanish.

2. What do you all remember learning about adjectives
in Spanish 1? Do you remember that adjectives must
match the nouns they modify in both # and
gender? When past participles function as
adjectives, this rule applies as well. Let’s take a look
at some examples below.
 La casa abandonada es muy vieja. --> The
abandoned house is very old. Abandonada is
feminine and singular because it is describing the
noun “house” which is also feminine and singular.
 Las puertas están abiertas.--> In this sentence,
abiertas is feminine and plural because “puertas” is a
feminine, plural noun.

3.  http://www.drlemon.com/Grammar/pastpart-
adj.html
 http://www.quia.com/quiz/110971.html
 https://www.conjuguemos.com/activity.php?i
d=23&source=public&language=spanish&typ
e=fillin