The recurring girl brushing her teeth at a bathroom sink in warm evening light.

Big question

为什么我一定要刷牙？

Wèishénme wǒ yídìng yào shuāyá?

Why do I have to brush my teeth?

我们刷牙，是为了把小小的食物碎屑刷掉，也帮助牙齿保持健康结实。

Wǒmen shuāyá, shì wèile bǎ xiǎoxiǎo de shíwù suìxiè shuādiào, yě bāngzhù yáchǐ bǎochí jiànkāng jiēshi.

我们吃完东西以后，小小的食物会留在牙齿上。刷牙会把它们清干净，让嘴巴更舒服，也让牙齿可以继续认真工作。

Wǒmen chī wán dōngxi yǐhòu, xiǎoxiǎo de shíwù huì liú zài yáchǐ shàng. Shuāyá huì bǎ tāmen qīng gānjìng, ràng zuǐba gèng shūfu, yě ràng yáchǐ kěyǐ jìxù rènzhēn gōngzuò.

你可以想一想，哪一些牙齿负责大口咬，哪一些牙齿负责小口嚼吗？

Nǐ kěyǐ xiǎng yì xiǎng, nǎ yìxiē yáchǐ fùzé dàkǒu yǎo, nǎ yìxiē yáchǐ fùzé xiǎokǒu jiáo ma?

We brush our teeth to wash away tiny bits of food and help keep teeth strong.

After we eat, little bits can stay on our teeth. Brushing helps clean them off so our mouths stay fresh and our teeth can keep doing their hard work.

Can you think of which teeth do the big crunching and which do the little nibbling?