5 sentences

1. 他吃东西时张着嘴吗？

   tā chī dōng​xi shí zhāng zhe zuǐ ma?

   Does he eat with his mouth open?

   Source: OpenSubtitles

2. 我张开嘴来争论。

   wǒ zhāng kāi zuǐ lái zhēng​lùn.

   I opened my mouth to argue.

   Source: CCMatrix

3. 他想说点什么，但却张不开嘴。

   tā xiǎng shuō diǎn shén​me, dàn què zhāng bu kāi zuǐ.

   He wanted to say something, but he could not open his mouth.

   Source: CCMatrix

4. 我以为他是在批评你张嘴嚼东西之类的。

   wǒ yǐ​wéi tā shì zài pī​píng nǐ zhāng zuǐ jiáo dōng​xi zhī​lèi de.

   I thought he was criticizing you for chewing with your mouth open or something like that.

   Source: CCMatrix

5. 我母亲坐在前门的一把硬椅子上，张着嘴。

   wǒ mǔ​qīn zuò zài qián​mén de yī​bǎ yìng yǐ​zi shang, zhāng zhe zuǐ.

   My mother sat on a hard chair by the front door with her mouth open.

   Source: CCMatrix