你的书包跟石头一样重！

Nǐ de shūbāo gēn shítou yíyàng zhòng!

Your backpack is as heavy as a rock!

我们来玩剪刀石头布吧。

Wǒmen lái wán jiǎndāo shítou bù ba.

Let's play rock-paper-scissors.

她捡起一块石头扔进湖里。

Tā jiǎn qǐ yī kuài shítou rēng jìn hú lǐ.

She picked up a stone and threw it into the lake.