sale,on sale,sell,sells有什么区别?要写仔细点,最好要举出例子.如果他讲打折拍卖应选哪个?

sale 、sell与 on sale有什么区别? sale sell与 on sale有什么区别? 选择填空There are many things( )A .sale B .sell C .on sale D.for sell sale ,sell 的区别 These clothes are very cheap.They are____________.A.on sell B.on sale C.at sale D.for sale on sale sale还有sell的用法不大懂,麻烦告诉一下 we have many things on sale.为什么sale不用成sell? 用each、sell、on sale造句 至少两个 用 anybody clothes we sale the on to sell造句 sale sell和sale的关系 sale和sell的区别. Sell 和sale的区别 The bags are ___ yuan 9.A、in sale for B、on sale at C、in sell for D、on sale for Can you help me to sell the computers?为什么 to sell ..不用 on sale sale和on sale和sell有何异同,句子中可以通用吗?好像都大概是出售的意思 on sale ,in sale ,for sale 的区别 on sale .at sale .for sale 的区别是什么?