在学习、工作、生活中，大家都写过作文吧，作文一定要做到主题集中，围绕同一主题作深入阐述，切忌东拉西扯，主题涣散甚至无主题。那要怎么写好作文呢？以下是小编整理的四级作文：Group Purchasing_团购，仅供参考，大家一起来看看吧。
In recent years, a new type of online shopping is rapidly gaining popularity — group purchasing, which was originally introduced from foreign countries but is now widely accepted all over China. People can buy not only goods, but also all kinds of services on group purchasing sites.
Group purchasing is very convenient, and saves people a lot of money. But it also has some problems. Since group purchasing is nothing more than another form of online shopping, the nature of it is no different from other online shopping patterns. Problems that exist in online shopping also can be found in group purchasing, like deceptive advertisements or poor after-sale services.
In my opinion, we should treat group purchasing as a way of shopping and nothing more. We must be careful not to buy something we don’t need only to follow the fashion.
