Hi,
In/Over the next few days, our athletes will arrive in Beijing.
Are both correct? If yes, I would like to see the suble differences. Please help me analyze them.
Here are a couple of comments on the general focus.
over - There will be more than one arrival, and these arrivals will be fairly evenly spread thoughout the next few days.
in - This does not focus on the above idea so strongly. There might even just be one arrival, which will occur at some point in the next few days.
Best wishes. Clive