小孩经常咬手指头。

Xiǎohái jīngcháng yǎo shǒuzhǐtóu.

The child often bites his fingers.

这个苹果很硬，你得用力咬。

Zhège píngguǒ hěn yìng, nǐ dé yònglì yǎo.

This apple is hard, you have to bite it hard.

狗咬了我的鞋子。

Gǒu yǎole wǒ de xiézi.

The dog bit my shoe.