付款方式的说法：

直接付款 pay in cash

支票付款 pay by check

信用卡付款 pay with credit card

分期付款 pay by installment

头期款 down payment

打折的常见说法：

折扣 discount

打七折 to give a 30% discount

打九折 to offer a 10% discount

打五折 50% off

降价出售 on sale

便宜货 bargain

讨价还价 to bargain with sb.

常见商品的表达：

文具用品 stationery

化妆品 cosmetics

鞋类 shoes

男士服装 Me's Wear

女士服装 Women's Wear

牛仔裤 jeans

体育用品部 sportswear department

休闲服装 casual wear

体育用品 sports goods

电子类产品 eletronic products

播放机 DVD player

数码摄像机 digital video camera

二手车 second-hand car