你知道什么是

do you know what ... is

→ 你
phrase Rare #23,861
do you know what ... is Used to ask whether someone knows the meaning or nature of something. It is followed by the thing being defined, such as 爱情 (love) or 天堂 (heaven).
CH: 你知道什么是幸福吗?
EN: Do you know what happiness is?

你知道什么是天堂

Do you know what heaven is?

— 城市英雄 (1993)

你知道什么是?

Do you know what love is?

— 穆那大哥做医生 (2003)

你知道什么是爱情

Do you know what love is?

— 勇往直前 (2004)

你知道什么是厚颜无耻

Do you know what shamelessness is?

— 海德尔 (2014)