the little girl's eyes were red.she___A.must be cried B.must have been crying
问题描述：
the little girl's eyes were red.she___A.must be cried B.must have been crying
答
就这两个选项?那就选B吧.个人觉得must have cried好一点.must have been crying这个怎么解释must在这里表示一种推测 就是说：有她的眼睛红红的推测出她可能哭了must have been crying这叫什么时态从语法上解释一下说时态的话。。。那就和must没什么关系了。。。。主要就是后面的have been crying have been doing这种结构是过去完成进行时。。。。。表示动作发生在过去。。。持续到现在。。。并且有可能延续到将来。例如：I have been working as a teacher since I graduated. 就是说我毕业后就从事教师工作，我现在也在做教师工作，在将来，我也可能继续做教师工作。。。。（这只是个例子。。。本人高三。。。别喷我。。。）