There are four main demonstrative pronouns in English:
* This - refers to a singular noun that is close by
* That - refers to a singular noun that is farther away
* These - refers to multiple nouns that are close by
* Those - refers to multiple nouns that are farther away
Here are some examples:
* This is my new car. (pointing to a car nearby)
* That is the tallest building in the city. (pointing to a building in the distance)
* These are my favorite shoes. (holding up a pair of shoes)
* Those are the books I need to return to the library. (referring to books across the room)
Remember:
* Demonstrative pronouns can also be used as adjectives (e.g., "this book", "those shoes").
* The choice between "this/these" and "that/those" depends on the proximity of the noun to the speaker.