A demonstrative pronoun is a type of pronoun used to point to specific things or people. The main demonstrative pronouns in English are this, that, these, and those. They help clarify which noun is being referred to, indicating proximity or distance. For example, this and these refer to items that are close, while that and those refer to items that are farther away. Demonstrative pronouns can also convey singular or plural meanings. This and that are singular, while these and those are plural. Using demonstrative pronouns correctly enhances communication by making it clear which specific items or individuals are being discussed.