我凭直觉认为他在说谎。

Wǒ píng zhíjué rènwéi tā zài shuōhuǎng.

I instinctively think he's lying.

你凭什么教训我？

Nǐ píng shénme jiàoxun wǒ?

What gives you the right to lecture me?

你会凭良心做事。

Nǐ huì píng liángxīn zuòshì.

You’ll act according to your conscience.