40%off sale 是4折还是6折

40%off sale 是4折还是6折 60％OFF SALE这个是打几折啊?如何区分是4折还是6折啊? 是on sale还是in sale SALE 30%off 大甩卖短语是great sale还是at great sale 打折 30%off 是打3折还是7折 30% off 与 30% sale up to 60% off是六折还是4折 是we at a great sale 还是 we are at a great sale 30%sale和30%off的区别,真正懂得再来答如题.不清楚的,拿不准的别来混淆视听.今天逛商场看见个30%off的牌子，以为是7折，结果一问，是3折，我就糊涂了…………标注：7折的说法现固定为全价 The sweaters are on sale 还是on the sale for 40 yuan sell的名词形式是sale还是seller? sale volume指的是数量还是金额同上 off是开还是关 off是关还是开 在“Come and buy your clothes at Huaxing's great sale.”中,at 修饰的是Huaxing还是sale? 是we have socks on sale for only ￥20.还是we have socks for only ￥20 on sale. turn off的off在这里是介词还是副词?