人家好心提醒你，你却一句谢谢都不说。

Rénjiā hǎoxīn tíxǐng nǐ, nǐ què yí jù xièxie dōu bù shuō.

Someone kindly reminded you, yet you didn’t even say thank you.

这可是人家的东西，用之前最好先问一声。

Zhè kě shì rénjiā de dōngxi, yòng zhīqián zuìhǎo xiān wèn yì shēng.

This is someone else’s stuff; you’d better ask first before using it.

人家都准备好了，你怎么还没出发？

Rénjiā dōu zhǔnbèi hǎo le, nǐ zěnme hái méi chūfā?

Everyone else is ready; why haven’t you set off yet?