adverb An adverb modifies or describes a verb, adjective, or another adverb. 'Sadly' is an adverb that expresses sorrow or regret.
interjection An interjection is a word or phrase that expresses emotion or exclamation. 'Sadly' can be used as an interjection to express sadness or disappointment.
The song lyrics conveyed a sense of sadness and longing, with lines like 'Sadly, I can't forget you.'
Sadly, the protagonist met a tragic end in the final chapter of the novel.
The patient spoke sadly about their childhood trauma during therapy.
The movie ended sadly with the main character's untimely death.
Sadly, the author passed away before finishing the final book in the series.
Sadly, the patient's condition has not improved despite our best efforts.
Sadly, the news of the tragic event spread quickly across social media.
Sadly, many students continue to struggle with basic math concepts.