This : Any thing near to you using this (यह : इसके प्रयोग से आपके आस-पास की कोई भी वस्तु)

That  : Anything Far from you using That (वह : जो कुछ भी आपसे दूर उस का उपयोग कर रहा है)

These:Many Thing near to you using These.( इनके इस्तेमाल से आपके आस-पास की कई चीजें।)

Those : Many thing far from you using those(वो : उन का उपयोग करने से आपसे बहुत कुछ दूर है)

Is this car ?     No  This is the camera.

Is this mobile ?  No This is Android Phone .

Is this a cow ? No this is dummy phone.

Is that a Mango ? Yes That is mango.

Is that a helicopter ? No That is Car.

Are these flowers ?  No These are not flowers. These are toy.

Are those Cars ?    No Those are not cars . Those are Cars.

Translation 

This is not pen This is apple. This is not mice This is my life. This is not car . This is government. Those are not Trees. Those are mountains. Those are not chair. Those are hitters .

I have two laptop.      I don't have  iPhone

I have AC.                  I don't have Sofa

I have Car.                 I don't have Train.

I have Good Business.  I don't have Airplane

I have care . I don't have TV. I have Flatt. I don't have sare.  

I have TV but I don't have Remote. 

I have Temple but I don't have Coconut .

I don't have pen but I have copy.

I don't have notebook but I don't have Book.

Had Use : I have in anything past 

I had many friend in childhood. 

I had cycle in Childhood. I had two girlfriend.

I did not have Cycle childhood. 

I did not have phone Childhood. 

I did not have much money childhood. 

I did not have good school in childhood.

This is mice but This is not my mice  but I had mice in childhood.

I had a car in childhood but Now i have only key.

Do you have Car . No I don't have car.

Did you had mobile phone in Childhood. No I did not had mobile phone.

Do you have helmet ? Yes I have helmet.

I did not had house in America in childhood . But Now I have New house in Delhi.