something与some一样常用于肯定句,而anything与any一样常用于否定句和疑问句.不过,在表示请求、建议或征求意见的疑问句中常用some或something.在表达“任何”这一含义时肯定句中常用any或anything.例如：
1.——I feel a bit hungry.
——Why don't you have some bread?（86年高考题）
2.Would you like something to drink?
3.You can get it in any department store.这东西你在哪个百货商店都买得到,
4.I believe anything he says.