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?

iPhone 8多少钱？

Let's have a try.

谢谢！