第1个回答 2010-11-27
I regret not to tell you this message ahead of time.本回答被提问者采纳
第2个回答 2010-11-27
I 'm regretting that I didn't tell him this message in advance.
第3个回答 2010-11-27
I am so regretful that I didn't tell him the news in advance.
希望能够帮到楼主
第4个回答 2010-11-27
I regret not having told him the news in advance