good heavens
01
なんてことだ！, まあ！
used to express surprise, shock, or astonishment, often in response to something unexpected or difficult to believe
慣用句
くだけた
例
Good heavens! I can't believe you managed to finish all of that work so quickly!
なんてことだ！ あなたがそんなに早くすべての仕事を終わらせたなんて信じられない！
