Demonstrative pronouns

First, what are demonstrative pronouns? How we use them?

Demonstrative pronouns are those pronouns which refer to something specific within a sentence. Literary, they are used to point out at something which can be or it is far or near from our reach. Demonstrative prounouns can either be singular or plural. Have a look at this picture:

Let's say you have a book in your hands, which means that the book is close to you, so in this case you would say: This is my book. What if the book in on the table and you can't reach it? Then we would say: That book is mine.

So, we have this and that, both in singular but the difference between them is: this - is used to refer to things or people near whereas that- is used to refer to things or people far from us.

The same rule applies to the plural form of demonstrative pronouns. If you have some books in your hand and they are near to you, then you would say: These books are mine. If the books are far from you, like for example on the table, and you can't reach them, you would say: Those books are mine. Both these and those are in plural, the difference is that these refers to things or people near you whereas those refers to things or people far from you.

Have a look at these simple exercises to test yourself.