"if you know what's good for you" in Chinese (Simplified)

• 要是你知道对自己有好处的话

Definition

用于警告或劝告某人为了自己的利益或安全应该做（或避免做）某事，通常带有紧迫感或轻微的威胁意味。

Usage Notes (Chinese (Simplified))

是非正式、带有一定威胁意味的表达，多用于警告别人注意后果。语气可轻松也可严肃，具体取决于上下文。不是字面意思。

Examples

You should listen to your doctor if you know what's good for you.

你应该听医生的话，**要是你知道对自己有好处的话**。

You'd better study for the exam if you know what's good for you.

**要是你知道对自己有好处的话**，你最好为考试学习。

Leave him alone if you know what's good for you.

**要是你知道对自己有好处的话**，不要惹他。

I'd back off now if you know what's good for you.

**要是你知道对自己有好处的话**，我现在就退一步。

Trust me, just apologize if you know what's good for you.

相信我，**要是你知道对自己有好处的话**，赶紧道歉。

Walk away now if you know what's good for you.

**要是你知道对自己有好处的话**，现在就离开。