我最近都在忙于完成这项任务，所以很抱歉不能参加你的聚会。

I have been occupied in finishing this task recently, so sorry I can't go to your party.

youdao

我从上周开始就感觉不适，所以很抱歉我不能参加你的聚会。

I've been feeling ill since last week, so I am sorry that I can't go to your party.

youdao

我很抱歉，明天我不能参加那场关于美国国历史的演讲。

I am so sorry that I won't be able to attend tomorrow's lecture on American history.

youdao

他很抱歉地说他不能来参加这个聚会了。

He regretted to say he couldn't come to the party.

youdao

我很抱歉明天我不能参加那场关于美国历史的演讲。我很抱歉，明天我不能参加那场关于美国历史的演讲。

I am so sorry that I won't be able to attend tomorrow's lecture on American history.

youdao

是关于您跟我们经理的约会，很抱歉告诉您，他今天早上九点钟不能和您见面，你瞧，出现了意外的事情，他必须参加一个紧急会议。

It's about the appointment with our manager. I'm extremely sorry he can't see you at nine o 'clock this moring. You see, something unexpected has come up. He has to attend a very urgent meeting.

youdao

很抱歉，我不能参加聚会了，因为今晚我必须完成我的读书报告。

I'm sorry I can't com to the party because I'm going to finish my book report tonight.

youdao

李先生：很抱歉我不能参加下周六您和李夫人为您兄弟举行的晚宴，因为那天晚上我恰巧有约在先。

I am so sorry that I cannot come to the dinner you and Mrs. Lee are giving next Saturday for your brother because of a previous engagement that evening.

youdao

你好！很抱歉周五我不能和你一起去参加生日晚会了。

I'm very sorry I can't go to James birthday party with you on Friday.

youdao

你好！很抱歉周五我不能和你一起去参加生日晚会了。

I'm very sorry I can't go to James birthday party with you on Friday.

youdao