This might seem a little picky but I did some search and didn't find a proper answer for it. I'm just being curious, when saying this sentence:
He's out doing the shopping.
Should the addressee necessarily know the stuff that are being bought? Or does "the" imply that the shoppings are the daily usual necessities only(eggs, milk, bread and etc)?
Was it the same if I said:
He's out doing some shopping.
or they would have meant differently?