Has & Have

Has/Have used for Possession, Eat& Drink

I have a car

He has a car

She has a car

We had a car when I was doing  my U.G

I'm having my lunch

We are having our tea

Have some water

Have this cake

She has eaten her lunch

She has had her lunch

I have drunk my tea

I have had my tea

They had eaten thier lunch

They had had Thier lunch before I called them out for lunch