true的副詞形式是什麼意思

The island is truly a heaven on earth.

那個島堪稱人間天堂。

Well, really and truly, things were better than expected.

啊，情況的的`確確比預計的要好。

I'm truly sorry that things had to end like this.

事情落到這樣的結局，我從內心裡感到歉疚。