At one point the lights went off for several days.

It might be fun to go off for the day.

Or maybe she would change, and go off the idea for good.

Tom went off for a conference with his father before leaving.

So I went off for a walk to think it over.

Go off by yourself for the next six hours and think about all I've just said.

Every year he goes off on his own for five or six weeks.

When exactly does the red light go off for you, Steve?

Finally, I went off by myself for a few weeks.

They won't go off for another 6 months or so - just eat them later.