Know what's what
有常识, 懂事, 有鉴别能力
🧩 词语组成解析
know
[no]
v. 知道;了解;认识;确信;
n. 知情;
what's
[[wɔts]]
（尤当 has 为助动词时, what is 或 what has 的常用口语形式）; 乌
what
[wɑt]
pron. （用以询问某人或某事物的词）什么，多少;…的事物;
adj. …的（事物或人）;
adv. （用于感叹句中）;
int. （用以表示不相信或惊奇）;（用以表示未听清楚对方说的话）;
🗣️ 情景例句
He complained to me about the food.
他向我抱怨伙食不佳。
I understand completely.
我完全明白。
What was wrong?
有什么问题吗？