I'd like to know if I am right about these two sentences:
He was expelled because he had been misbehaving. This means he misbehaved on several occasions, probably over a period of time.
He was expelled because he had misbehaved. This means he misbehaved once, or a few times.
Yes, that's the general idea.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.