regret v.& n.遗憾；后悔

regret to do sth.遗憾地去做某事

regret doing/having done sth.后悔做了某事

regret that...后悔......

with regret非常懊悔/遗憾地

to one's regret令某人遗憾的是

(1)I regret to say that we can't stay here any longer.

我很抱歉地说，我们不能再待在这儿了。

(2)He said he regretted not being able to help.他说他为没能给予帮助深感遗憾。

(3)Much to my regret，I am unable to accept your invitation.非常遗憾，我不能接受你的邀请。

[单项填空]

(4)The detective didn't regret that to the local villagers，but wished he hadn't been that rude.(2018·如东高级中学高一上期中)

A．to say B．to have said

C．saying D．having been said

答案　C

解析　 句意为：这个侦探不后悔对当地的村民说过那些话，但他希望自己没有那么粗鲁。regret doing sth.后悔做了某事。

(1)inform vt.通知，告知

inform sb.that...通知某人......

inform sb.of/about sth.通知某人某事

keep sb.informed of/about...通知某人关于......；使某人知道......

(2)information n．[U]信息；资料

a piece of information一则消息

(5)I am very glad to inform you that you get the award.我很高兴地通知您，您获奖了。

(6)They would inform him of/about any progress they had made.

他们会把他们取得的任何进步都告诉他。

[高级表达]

(7)Although he had been informed many times，he still forgot the meeting.(用分词短语作状语改写)