Если что-то определенное, то пишется "the", а если не определенное, то "a"
<span>Например, The girl has a doll. У девочки есть кукла. Имеется в виду какая-то одна конкретная девочка, известная например из текста, а вот кукла у нее, означает просто предмет, который у нее есть, может быть хоть мяч, хоть скакалка</span>
He has got a car . It is his car.
She has got a sister. It is her sister.
They have got a pet. It is their pet.
You have got a radio. It is your radio.
We have got a tree house. It is our tree house.
I have got a toy soldier. It is my toy soldier.
It has got a toy . It is its toy .
Сколько Вам (тебе ) лет ?
1) I must go home at 5 ' o clock.
2) I must go to school at 3 ' o clock.
3) You have to bring activity books tomorrow.
4) They have to stay at home, because it is going to rain.
Ben is as strong as his brother