20. have a look 看一看;看一眼have a look at = look at 看21. on sale 廉价销售for sale 等待出售 备考句式: 1. How much be动词 …?询问某物价钱 How much is this T-shirt? = What’s the price of the T-shirt? How much are these socks? 2. It is /They are 数字 币种单位。表示某物多少钱 It’s seven dollars. They’retwo dollars. 3. can 引导的疑问句 Can I help you? 同义表达: What can I do for you? Is there anything I can do for you? 4. sb. want(s) sth.某人想买某物 I want a sweater. 相当于:I want to buy a sweater.