There are different kinds of sales in the world, such as yard sales, Christmas sales and end-of-season sales.世界上有各種各樣的銷售會。 比如在院子里賣東西,在圣誕節(jié)的促銷以及季末促銷。Next Sunday, there will be a sale in our school.下個周日,我們學校將舉辦一場銷售會。It will be held on the playground.銷售會在操場上舉行。About 200 students from seven classes are going to take part in the activity.來自七個班級的兩百多名學生將要參加這次活動。We can sell used things, such as cars, toys and book marks.我們可以出售二手物品,比如小汽車、玩具和書簽。Also we can change used things for what we need.我們也可以用二手物品換取自己想要的東西。In this way, we can not only make full use of used things but also protect the environment.通過這種方式,我們不僅可以物盡其用,而且可以保護環(huán)境。