thanks a bunch

used to show you are annoyed when someone has done something you are unhappy about or has failed to help you in some way

(表示恼怒)多谢你干的好事，不劳你费神;(用作反话)多谢你的帮助

A: Have you seen my sandwich?

看见我的三明治了吗?

B: Ah! I found one on the table so I threw it away. I thought you had finished.

啊!我在桌子上发现了一个，所以我把它扔掉了。我以为你不要了。

A: Thanks a bunch! That was my lunch.

我还得谢谢你啊(帮我把我的食物扔掉)!这是我的午餐。