Grammar
N2 connective

To my surprise 〜ことに(は)

Meaning

"To my surprise / delight / regret, …" — the speaker's reaction stated first.

Formation

Notes

Only emotion words fit in front — 驚いた, うれしい, 残念な, 困った. It always opens the sentence, framing the fact that follows, and never appears at the end.

Examples

To my astonishment, he climbed the mountain alone.

Breakdown
was surprised to my (surprise) alone mountain climbed

To my delight, I passed the exam.

Breakdown
happy to my (delight) exam passed

Unfortunately, the shop was closed.

Breakdown
regrettable to my (regret) shop was closed

Awkwardly enough, I have lost my key.

Breakdown
troubled to my (dismay) key have lost

Thankfully, everyone helped me.

Breakdown
grateful to my (gratitude) everyone helped me