Use of "have" and " have got"

The use of 'have' and 'have got' is little bit confusing for many students.Both of the words are express the same meaning : possession.
Example:
I have a car.
I have two brothers.
He has a goog mobile phone.
They have a resort near by the valley.
Here have have used as a main verb

Use of "Have got"

I have got two pencils.
She has got three children.
We have got ten computers.
Here 'have' used as 'Auxiliary' or 'helping verb'

We are going to understand this more deeply.
Can you make a question from the sentence " i have a car "
The question should be like this:

Do you have a car?( here we use 'DO' to make a question, because in the statment 'have used as a main verb)

I have got two pencils.
Question:
Have you got two pencils ?
In the above said statement 'Have" used as a helping verb or Auxiliary so there is no need of other helping verbs like "DO"

He has a mobile phone.
Question: Does he have a mobile phone?

She has got three children
Question; Does she have three children?

They have a resort in the valley.
Question :Do they have a resort near by the valley?

We have got ten computers.
Question : Have we got ten computers?