regret
1.I（或We）regret that...，I（或We）regret to say that...，I（或We）regret to have to announce that...等表达方式是用来报告不愉快的事的，语气可重可轻。例如：I regret to tell you that my brother died yesterday afternoon.和We regret to say that we cannot accept your kind offer.注意这两句里的regret都是动词，不可说I（或We）have the regret that...，I（或We）have the regret to say...等。
下面三句意思相同：
- I regret that I cannot accept your kind offer.
- I regret to say that I cannot accept your kind offer.
- I regret to have to say that I cannot accept your kind offer.
也有人说I regret it that I cannot accept your kind offer但不普通。
2.说“因…而感觉悲哀或不愉快”在regret（动词）后面通常接不定式，偶尔接动名词。例如：I regret to hear of your sister's death. I regret to have to trouble you again.和I regret having to trouble you again.说“因…而感觉懊悔”在regret（动词）后面接动名词，如I regret causing him so much inconvenience和I regret having caused him so much inconvenience。注意regret是及物动词，后面不可加上for。
比较下面三句：
- I regret to have to trouble you again.
- I regret having to trouble you again.（1.我［现在］不得不再麻烦你，感觉不安。2.我［以前］不得不再麻烦你，感觉懊悔。）
- I regret that I have to trouble you again.
3.比较下面每组里的两句：
- He regrets his happy youth.
He regrets, the loss of his happy youth. - He regrets the good training he did not receive.
He regrets the improper training he received.
4.下面第一句里用the regret，第二句里用his regrets或his regret：
- He expressed the regret that he could do nothing about it.
- He expressed his regret(s) that he could do nothing about it.
5.下面每组里的两句意思相同：
- On receiving our invitation Mrs Kerr sent a regret.
On receiving our invitation Mrs Kerr sent regrets. - He refused my offer with much regret.
He refused my offer with many regrets.
6.admit with regret用作regret或admit解，不是过分客气，便是不够诚恳。
