regret的形容词和副词
regret的副词 regrettably 遗憾地；抱歉地；可悲地；
regret
v.感到遗憾;惋惜;懊悔;有礼貌地或正式地表示抱歉、痛惜或悲伤；
n.痛惜;懊悔;遗憾;失望
The decision could be one he lives to regret.
这一决定也许会有让他后悔的一日。
He gave up teaching in 2001, much to the regret of his students.
他于2001年放弃了教学，这使他的学生深感遗憾。
She was to regret her words before the day was out.
她到不了天黑就会为自己说的话后悔。
She looked back on the pa