some用于肯定句中,any用于否定句或疑问句中
eg：I have some books.
Do you have any books?
I don't have any books.
但也有特例,some用于疑问句中时表示委婉语气,希望得到对方的肯定回答
eg：May I have some juice?
Can you lend me some money
而any用于肯定句中,表示“任何一个”
eg:Tom is taller than any other one in our class.