嘴巴

In a sentence

• 他张开嘴巴说话。

  He opened his mouth to speak.

  Here, '嘴巴' (mouth) is used as a noun to refer to the physical feature that enables speaking.

• 妈妈总让我管好自己的嘴巴。

  Mom always tells me to watch my mouth.

  In this context, '嘴巴' (mouth) refers to one's speech or spoken language, implying the importance of careful verbal expression.

• 小猫用嘴巴咬食物。

  The kitten uses its mouth to bite the food.

  Here, '嘴巴' (mouth) is utilized to describe the tool the kitten uses to interact with food, emphasizing its functional aspect.