Use 'some' when talking about a small number or amount of things. The exact number is not clear or important. People use it for both countable and uncountable nouns.
I have some apples in my bag.
Can I have some water, please?
'Some' can mean an unknown or unimportant person. It is used when the speaker does not know or does not want to say the exact name of the person.
Some told me you are coming.
Some said it would rain today.
Used when offering or asking for an unspecified quantity. It shows a polite or friendly tone in questions and invitations.
Would you like some tea?
We need some help here.
'Some' can be used informally to show that something or someone is very good or powerful. It adds emphasis to a positive quality.
He is some player on the team!
She made some fast progress.
'Some' refers to an unknown or not exact part of a larger group. It shows that only part of a total is being talked about.
Some of the students passed the test.
Some like to read before bed.
Though usually 'any' is used in negatives and questions, 'some' appears in offers and polite questions. Sometimes 'some' is used in negatives for emphasis or style.
Do you want some cake?
I don't have some time now. (less common/casual)
'Some' can be used before numbers to show an approximate amount. It gives a rough estimate rather than an exact number.
It costs some ten dollars.
He arrived some twenty minutes ago.
'Some' can be used in formal or legal language to indicate specific but unnamed people or things. It shows a particular group without naming them.
Some documents must be signed today.
Some persons are exempt from this rule.
