price作名词时，意为“价格，价钱”，price根据句子意思可以用单数，也可以用复数。price常和at搭配构成短语at…price, 意为“以……的价格”。例如:
We sell all our clothes at very good prices.
我们卖所有的服装价格都很优惠。
I can buy this CD at a low price.
我能以低价买到这张光盘。
【注意】
（1）the price of …意为“……的价格”，作主语时谓语动词用单数。例如:
The price of the coat is 300 yuan.
这件外套的价格是300元。
（2）描述物品贵时用expensive,便宜时用cheap. 而表示价格高时用high, 价格低时用low.
This T-shirt is very cheap.
=The price of this T-shirt is very low.
这件T恤衫很便宜。
【拓展】
描述价格的句型:
What's the price of …?=How much is …?=How much does …cost?
What is the price of the iPhone 8 Plus?
=How much is the iPhone 8Plus?
=How much does the iPhone 8 cost?
谢谢！
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