此题为何选B不选A?
6.I regret ( ) you that I can't go to Hangzhou for a visit next Sunday with you because I've caught a bad cold. A.telling B.to tell C.tell D.having told
regret to do sth 遗憾要做某事(动作还没发生) regret doing sth 后悔做过某事(动作已发生) regret to tell you that... 遗憾要告诉你... regret telling you that... 后悔告诉了你...
答：不需要一下子问这么多吧？？详情>>
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问：working hard vs. hard working
答：there are no defferent.详情>>
