Definition
Used to express disapproval or annoyance about something that has happened or been done.
（表示不贊同）竟然做了…，居然做出…
She's gone and told everyone my secret, which is completely out of line.
她竟然把我的秘密告訴了所有人，這真是太過分了。
They've gone and used my tools without asking, which is really disappointing.
他們居然沒問我就用了我的工具，這真讓人失望。
He’s gone and spilled coffee all over my new shirt, how awful!
他竟然把咖啡灑在我的新襯衫上，太糟糕了！