How to express surprise (to a bad thing) in Chinese language?
For example:
1. Shit, I forgot to turn off the oven at home!
2. OMG, I failed the test?
3. Damn, I guess I need to go on a diet again...

Question

Answer

"哎呀" ，”完了“， ”糟糕“，”我的妈呀“， all of theses words are express a bad thing in Chinese.

Answer

1. 靠
2. 我的天啊 or just 天啊
3. 該死的 、天殺的，"damn" has a feeling of "curse" I think.

Answer

1. 糟了！我忘关炉子了！
2. 天呐！我考试没通过？
3. 真是的，看来又要节食了！

口语中类似的说法还有：唉哟！我靠！什么！不是吧！我去！啊呀！