This, That, These, Those
This, That, These, Those are called demonstratives and they are used to show the relative distance between the speaker and the noun.
We use this (singular) and these (plural) to refer to something that is here / near.
This is my cat. (singular)
These are our animals. (plural)
We use that (singular) and those (plural) to refer to something that is there / far.
That is our car. (singular)
Those are my jeans. (plural)