她说话的口气充满了自信。

tā shuōhuà de kǒuqì chōngmǎn le zìxìn.

Her tone of voice is full of confidence.

他的口气中透露着一丝不满。

tā de kǒuqì zhōng tòulù zhe yī sī bùmǎn.

There is a hint of dissatisfaction in his tone.

不要用那种傲慢的口气对待他人。

bùyào yòng nà zhǒng àomàn de kǒuqì duìdài tārén.

Don't treat others with that arrogant tone.