What are some examples of demonstrative adjectives?

1) For breakfast, I had cereal, juice, and toast.

2) My best friends are Paul, Amanda, and Quinn.

3) The moon, the stars, and the sun all appear in the sky. hope it works

Demonstrative adjectives are words that modify nouns and identify a specific noun or nouns. Here is a sentence with a demonstrative adjective. That tree is beautiful.

This sentence clarifies any confusion and identifies a specific tree. Which tree is beautiful? That tree.