这个帽子多少钱用英语怎么说有两种：
"How much is this hat?"
"What is the price of this hat?"
来源：这两种表达都是常用的购物用语，在商店或市场中询问物品价格时常使用。
例句：
"How much is this hat?" (这顶帽子多少钱？)
"What is the price of this hat?" (这顶帽子的价格是多少？)
"Can you tell me the price of this hat?" (能告诉我这顶帽子的价格吗？)
Note: "How much" is more common to ask for the price of something. "What is the price" is more formal.