--It leaves at 11 pm. You'd better hurry up if you want to catch the train.
Which platform is the train arriving on?
--I think it is arriving on Platform number 1. But look, it is an hour late.
You rushed me so as to reach here in time. But what is the use?
--Now we can relax until the train arrives. People will be pushing their way into the compartments even before the passengers detrain.
At what time does the train arrive? (At what time the train is supposed to arrive?)
--Sorry. I have no idea.
I left home early so that we should not miss the train.
--We too left home early lest we should miss the train.
[We left home early for fear that we should miss the train]