Demonstrative adjectives point out the person or thing concerned. Examples are: this, that, these and those.
- These mangoes are very sweet.
- Those days are unforgettable.
- This flower is very beautiful.
- I will never forget that experience.
Demonstrative adjectives are different from demonstrative pronouns. A demonstrative pronoun can stand alone. It is used to avoid the repetition of a noun.
- This is better than that.
A demonstrative adjective is followed by a noun. It is used to modify that noun.
- This colour is brighter than that colour.
This and that are used with singular nouns. These and those are used with plural nouns.