1．网上购物已很普遍；
2．网上购物的好处；
3．网上购物的缺点。
[写作导航)第一段宜开门见山，写因特网的发展和计算机的普及使网上购物日渐普遍；第二段谈网上购物的便利，如节约时间和精力，尤其对老人、病人和忙碌的人更是如此；第三段谈网上购物的缺点，其一是有时网上所见与实际所得不一致；其二是网上欺诈造成投诉困难。
[范文]
With the development of the Internet and the popularization of computers, shopping on the Internet has become a commonplace in our life. Here consumers can buy almost everything they need.
Shopping on the Internet has a lot of advantages, of which the most important is perhaps its convenience. People don＇t have to waste a lot of their energy and precious time to go from one shop to another to choose the commodities they like. This is especially desirable to the old, the sick and the busy people who cannot go to the shops in person. The goods come in all shapes, sizes and colors on the Internet. All they need to do is to sit in front of their computers and click the mouses. The commodities they order will be delivered to them promptly.
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However, shopping on the Internet also has its disadvantages. The first disadvantage is that the consumers can＇t see the goods or try them on personally. Sometimes, the real goods may not be the same as what they have seen on the computer. The second disadvantage is that some shops on the Internet are not registered. They will never deliver anything to you after they get the money from you. Once cheated, you will find that you have nowhere to go to complain.
