What is a exeple of demonstrative?

The demonstrative pronouns take the place of a noun, indicating nearness or distance in place or time.

The demonstrative pronouns are this, that, these, and those.

Examples:

• This is the video that I've been looking for.
• That is a good video also.
• Do you like these or do you like those better?

The demonstrative pronouns are adjectives when used to describe a noun and placed just before the noun in a sentence.

• This video is the one I've been looking for. That video is good also.