for sale on sale的区别：中文意思不同、用法不同、侧重点不同。for sale意为供出售、待售，可指抽象的出售的行为，也可指具体的出售的动作；on sale意为折价销售、减价出售，侧重于表述廉价、有折扣的销售。
一、for sale的意思及用法
for sale意为供出售;待售。例句有：
1、They've put their house up for sale.
他们的房子现在出售。
2、There are many boats, new and used, for sale
有很多新旧不一的船待售。
3、The company is not for sale.
该公司不准备出售。
4、There was a camera for sale in the window.
橱窗里有一架相机待售。
5、The beans are then ground and packaged for sale as ground coffee
然后那些咖啡豆被磨碎，包装好作为咖啡粉出售。
6、A tenant may have a right of first refusal if a property is offered for sale.
若房产要出售，承租人可以有优先购买权。
7、Only those homes offered for sale at competitive prices will secure interest from serious purchasers.
只有那些价格优惠的住房才会引起真想买房的人的兴趣。
二、on sale的意思及用法
on sale意为出售;上市;折价销售;减价出售。例句有：
1、The fish are on sale from our own coastal waters.
出售的鱼来自我们自己的近海水域。
2、English textbooks and dictionaries are on sale everywhere
英语教材和词典到处都有卖的。
3、He bought a sports jacket on sale at Gowings Men's Store.
他在高英斯男装店买了一件打折的运动上衣。
4、He was disgusted with the stodgy pizzas on sale in London.
他讨厌吃伦敦卖的难以下咽的比萨饼。
5、The new commemorative stamps will be put on sale next week.
新的纪念邮票将于下星期发售。
