本题应该把by去掉,变成I am so sorry to invite you,not knowing that you will be a judge on Tudesday. 那么本题中的not knowing 考察是非谓语动词表伴随的结构.not knowing是I 发出的动作,所以用主动形式.
我很抱歉,因为我不知道你周二要当评委 而再次邀请你 I'm sorry, because I don't know you on Tuesday when the judges and once again invite you I am so sorry to invite you by not knowing that you will be a judge on Tudesday. Tudesday. 是星期二吗? tuesday