We were glad that by the time we got there the play ___yet

题目

We were glad that by the time we got there the play ___yet
选hasn't begun还是hadn't begun 为什么

答案

应该选择后者,即：hadn't begun hadn't begun 的完整形式应该是：had not begun,而 had not begun 是 has not begun 的过去式形式.has not begun 一般是完成时,表示现在已经做完的动作,题中的前一个选项 hasn't begu...