I was trying to find some info about this construction but couldn't succeed, although I happen to encounter it here and there almost every day. So the construction is: auxiliary verb + subject + verb. Noteworthy that it looks like a question construction, but it actually isn't.
Example: Very rarely does she manage to handle her work.
This sentence can be replaced with She very rarely manages to handle her work.
So in what cases should we use it? And when would it be inappropriate to do it?