她告诉我们很清晰的方向，并且我们很容易就找到了。从句中的“in the morning”和“during the night”可以知道break into这个动作发生在found动作之前，表示“过去的过去”，用过去完成时。
由have/has+ been + doing1.表示一个动作从过去某时开始，一直延续到说话时候结束；eg: I have been waiting for you for two hours.我等你有两个小时了。
例:I believed by the end of that year an advanced version of that software would have been developed， but I was wrong.
过去完成时是指，在过去的某一个时间里已经完成的动作，也就是说是“过去的过去”，其句型由“had done”构成，例如:When I woke up， it had already stopped raining.
