Demonstrative pronouns
You use demonstrative pronouns to make statements about people, things and places. The pronouns are:
- this, these
- that, those
Use "this" with a single person, thing or place that is close to you: I like this park very much. This car has broken down. This is my sister.
Use "these" with many people, things or places that are close to you: These are my parents. These drinks taste great. I like these colours.
Use "that" with a single person, thing or place that is not close to you: I don't like that park in London very much. That car over there has broken down. That was my sister on the phone. That movie yesterday was great.
Use "those" with many people, things or places that are not close to you:
Those are my parents over there. Those books of yours were very good! Do you see those cars in front of that yellow house?
You can also use this/these and that/those to talk about time:
The weather is bad these days. 
now and the days before
Women had no rights in those days. many years ago
now and the days before
Women had no rights in those days. many years agoComplete the sentences by choosing the correct pronoun: this, these, that or those.
There is/are
There is a difference between "This is" and the chunk "There is".
You use the chunk "There is" when you say that something exists: There is a post office in town. There is a car in front of the house.
Use "There is" with one person, thing or place and "There are" with many people, things or places: There is only one glass left. There are three drinks on the table. There is a playground next to the house. There are many shops in town.
That's enough grammar for now!