1 我很想去，但我不能

I 'd love to , but I can't.

2 谢谢， 但不巧的是我已经有计划了

Thanks， but unfortunately I already have plans.

3 我希望我能去，但我那天还有个会议

I wish i could , but I will have a conference that day.

4 你真好，但我周五有个约会

It's very kind of you, but I have an appointment on Friday.

5 我已经答应今晚去见詹妮弗了， 不过还是要谢谢你。

I have already promised to meet Jannifer this evening, but thank you all the same

6 谢谢你邀请我，不过我实在是太累了。

Thank you very much for asking me, but I feel rather tired.

7 虽然我很想去 但恐怕下星期天我没空

Much as I should like to , I am afraid I won't be free next sunday.

8 我一整天都会很忙

I will be busy all day long.

9 我得加班

I have to work overtime.

来源:可可英语 http://www.kekenet.com/kouyu/201105/134695.shtml