an exclamation expressing surprise or admiration (e.g., 'my goodness', 'well, I'll be'); used to show strong feeling about something.
それはそれは、おめでとうございます。本当に良かったですね。
Well, my goodness — congratulations. I'm really happy for you.
それはそれは驚いた。こんなことが起きるとは思わなかった。
Goodness, I'm surprised. I never thought this would happen.
an adverb meaning 'very' or 'extremely' — used to emphasize degree, often with a slightly emphatic or polite tone.
その庭はそれはそれは美しく、秋の紅葉が見事だった。
The garden was truly beautiful; the autumn foliage was magnificent.
彼の話はそれはそれは面白くて、時間を忘れて聞いてしまった。
His story was so interesting that I lost track of time listening.