Demonstrating How to Use Demonstratives

http://learningenglish.voanews.com/a/grammar-demonstrative-pronouns-determiners/3347315.html

Have you ever wondered about the differences between the words this, that, these and those?

These words are called demonstratives. Demonstratives tell who or what you are talking about. They are often a source of confusion for English learners, because other languages use demonstratives in different ways than English does.

Demonstratives can act as pronouns or as determiners. A pronoun is a word that is used instead of a noun or noun phrase.

A determiner is a word that comes before a noun and is used to show which thing is being referred to. In the second sentence of this story, you heard these as a determiner, when I said “Thesewords are called demonstratives.”