Meaning/Usage: To express something is not important to you. 表达一些东西对你来说并不重要。

Explanation: This phrase is usually used by itself when you are responding to a statement someone made. The example sentences below show a full sentence to provide more context, but it is normally used by itself.

"Who cares if they win or lose?"
"Who cares whether or not it rains."
"Who cares about what they think."

A. "Did you happen to watch the game last night?"
B. "No I was not home."
A. "I was just wondering who won?"
B. "Who cares, I don't really like either teams."

Other Common Sentences

"It doesn't matter."
"I do not care."