Level A1
Some vs Any
Some goes in positive sentences (I have some apples) and in requests and offers (Can I have some tea?). With not we say any (I don't have any apples), and in yes/no questions usually any too (Do you have any apples?).
I have some apples.
Look: I have some apples. A positive sentence, so some.
Forms
I have some apples.— a positive sentence: someI don't have any apples.— with not, the word changesDo you have any apples?— in a yes/no question it usually changes too
A common mistake
Wrong: I don't have some money.
Right: I don't have any money.
Many people keep some after not. With not, the word changes, as in the right sentence.
More examples
Can I have some tea?
But when we ask for something or offer it, it's some again: Can I have some tea?
There aren't any parks in my city.
There aren't is a sentence with not, so the word changes here too.