on sale, for sale的用法区别

 　　for sale(个人所有物)“出售的”“待售的”，a house for sale房屋出售，not for sale(告示)非卖品。He put his car up for sale.他把汽车拿出来卖。

on sale“销售中”“上市”“廉价的”“特价的”，如：They sell eggs on sale today.今天那家店鸡蛋大减价。on sale多指商品性质的东西。The summer wear is on sale.夏装正在销售。