i got it on sale for 50 percent off 2400 dollars 那个off做什么成分?求翻译!

i got it on sale for 50 percent off 2400 dollars 那个off做什么成分?求翻译! I got this bike (cheap)on a bike sale. for sale 和on for sale comment on on sale和for sale区别 FOR SALE 与ON SALE的区别 on sale ,in sale ,for sale 的区别 on sale .at sale .for sale 的区别是什么? I got on the bus.I met him on it for the first time（合并为一句I got on the bus（）（）.I met him on it for the first time .I had been working on it for five years before we got to the shooting stagstage I got on the bus.I met him on it for the first time（合并为一句） It's not for sale. no sale 和 for sale有什么区别on sale 和 for sale 有什么区别 for sale ,on saleHow do you like the pizza for sale--very good.为什么是for sale不是on sale “I bought this shirt for 35 yuan yesterday.”“It’s on sale today for only 29.You should have waited.”“On really?But how _____ I know?” A:would B:can C:did D:do for sale 和on sale有什么区别 for sale和on sale有什么区别 the difference between for sale and on sale?english learning