写作思路：可以写和妈妈去购物的时候都购买了什么，比如随手拿了维达，一整包有十卷，价格是二十七元。妈妈提醒“我”说，“清风在搞促销，十二卷一包，只卖二十五，很合算。”于是我又把维达换成了清风，小心翼翼地放进推车里等等。
正文：
To Carrefour supermarket, I saw a high shelf full of a variety of goods, dazzling. To the daily necessities area, I saw toilet paper neatly placed on the shelf, there are many brands of Qingfeng, Shujie and Weida.
到了家乐福超市，我看到高高的货架上摆满了各种各样的商品，琳琅满目。到了日用品区，我看到了卫生纸整齐地摆在货架上，有清风、舒洁、维达很多品牌。
I took Vader with me. There are ten rolls in a whole package. The price is 27 yuan. My mother reminded me, "Qingfeng is promoting sales. It's a pack of twelve rolls, and it's only 25. It's a good deal." So I replaced Vader with breeze and put it carefully into the cart.
我随手拿了维达，一整包有十卷，价格是二十七元。妈妈提醒我说，“清风在搞促销，十二卷一包，只卖二十五，很合算。”于是我又把维达换成了清风，小心翼翼地放进推车里。
Leaving the tissue area, we went shopping for garbage bags. I took a roll of garbage bag to my mother, but my mother shook her head and said, "our garbage can is 60 * 50cm, this is 60 * 40cm, it can't be put on. So I helped my mother find a roll of 60 * 50cm, the price was seven yuan. We also selected toothpaste, toothbrush, towel and so on to put into the shopping cart.
离开纸巾区，我们去选购垃圾袋。我拿了一卷垃圾袋给妈妈，可是妈妈摇摇头说：“我们家的垃圾桶时60*50cm的，这是60*40cm的，肯定套不上去。于是我又帮妈妈找了一卷60*50cm的，价格是七元。我们还挑选了牙膏、牙刷、毛巾等放进购物车。
Pick out the daily necessities and we'll come to the cashier. "The total is 80 yuan," said the cashier's aunt We paid the money and went home happily. Walking on the road, I thought: "the original shopping to compare three, to buy the most cost-effective."
挑好日用品，我们来到收银台。收银员阿姨说：“共计八十元。”我们付好了钱，就高高兴兴地回家了。走在路上，我想：“原来买东西要货比三家，要买性价比最高的。”