regret可數嗎

例句：

He was to regret that decision for the rest of his life.

他終生都將後悔作出了那一決定。

She has not shown any real regret for what she did.

她對自己做過的事還沒有表現出真正後悔的樣子。

The decision could be one he lives to regret.

這一決定也許會有讓他後悔的一日。

He gave up teaching in 2001, much to the regret of his students.

他於2001年放棄了教學，這使他的`學生深感遺憾。

She was to regret her words before the day was out.

她到不了天黑就會為自己說的話後悔。