他的口气很温和。
tāde kǒuqì hěn wēnhé 。
His tone of voice is very gentle.
老师的口气让我感到很信任。
lǎoshī de kǒuqì ràng wǒ gǎndào hěn xìnrèn 。
The teacher's manner of expression makes me feel very trusted.
你说话的口气太生硬了。
nǐ shuōhuà de kǒuqì tài shēngyìng le 。
Your tone of voice is too harsh.