Mhm
（表示同意或在听对方说话）哦, 嗯
🗣️ 情景例句
What made you decide to study Economics?
你为什么决定修读经济学？
You forgot to fasten the collar buttons.
你忘了系鞋带。
As a matter of fact, it is the other way around.
事实上，情况正好相反。