回答

・I went through all the trouble to...
・I shouldn't have made it for you

「費盡心思才做的」換一種說法「花了很多努力才做到」。
努力做○○：go through all the trouble ~

總之，
範例：I went through all the trouble to make it for you.
翻譯：費盡心思才做的。

我們也常用「should+have+過去分詞」這樣的表達方式來表達遺憾。
換句話說，在這裡，即使我做到了＝我也不應該做到。
範例：I shouldn't have made it for you.
翻譯：我希望我沒有為你做這件事。

我盡量不想說這樣的話。（苦笑）

有幫助｜0