问题
选择题
(2009·江苏高考)He did not regret saying what he did but felt that he________it differently.
A．could express
B．would express
C．could have expressed
D．must have expressed
答案
答案：C
选C 考查情态动词的用法。根据句意可知他觉得本来能够用别的方式表达的(却没有那样做)。显然是对过去的事表示遗憾，因此应该使用could have done，表示本来可以做却未做。