Definition
An expression used to convey annoyance or sarcasm when someone has failed to provide help or has done something unfavorable.
（反讽）多谢你喔
I was hoping you could fix my bike, but you made it worse; thanks for nothing.
我希望你能修好我的自行车，但你却把它弄得更糟；真是多谢了。
"I thought you were going to help me with the report." "Thanks for nothing."
「我以为你会帮我完成报告。」「真是多谢了。」
I really needed your assistance, but you ignored me, thanks for nothing.
我真的很需要你的帮助，但你却无视我，真是多谢了。