You can use unfortunately to introduce or refer to a statement when you consider that it is sad or disappointing, or when you want to express regret.
例句
Unfortunately, my time is limited...可惜的是,我的時間有限。Unfortunately for the Prince, his title brought obligations as well as privileges...可惜對于王子來說,封號賦予他特權(quán)的同時也給他帶來了義務(wù)。
英漢詞典釋義
adv.
遺憾地, 不幸地
Unfortunately, the war broke out.不幸的是戰(zhàn)爭爆發(fā)了。She had gone home, unfortunately.遺憾的是她已回家了。
英英詞典釋義
Adverb
1. by bad luck;
"unfortunately it rained all day""alas, I cannot stay"