A:Can I buy books through Internet?

甲:我可以在网上买书吗？

B:Of course. There are some good websites selling books.

乙:当然。那有一些卖书的好网站。

A:Would you please recommend some?

甲:能给我推荐几个吗？

B:I think Amazon is really good.

乙:我觉得亚马逊（网站）不错。

A:How can I pay bills?

甲:我怎么付账呢？

B:There are different ways of payment:CODs, money order and bank transfer, etc.

乙:有好多不同的付款方式:货到付款、邮局汇款、银行电汇等等。

A:I prefer cash on delivery.

甲:我更喜欢货到付款的方式。

shopping on the Internet 意思是“网上购物”，也可以说 shopping online.