询问价格的句型：
1.How much does /do +货物名+ cost？
例如：
---How much does the computer cost?这台电脑多少钱？
---It costs $500.500美元。
---How much do the shoes cost?这双鞋多少钱？
---They cost $40.40美元。
2.How much is/ are +货物名？
例如：
---How much is the car?这辆车多少钱？
---It is $8,000.8000美元。
---How much are the clothes?这衣服多少钱？
---They are 500 yuan.500元。
3.其他一些询问价格的方式：
How much do I owe you?我该付给你多少钱？
How much do you ask for it?这个你要卖多少钱？
How do you sell the water melons?这些西瓜怎么卖？
How much do you want for it?这个你要卖多少钱？
How much shall I pay for it?这我该付给多少钱？
What does it cost?这要多少钱？
What's the regular price?固定价格是多少？
