I’d no sooner completed the report I was working on than my secretry put three more on my desk .
He'd no sooner begun to speak than the lights went out. = Konuşmaya başlar başlamaz ışıklar söndü.
No sooner had I started mowing the lawn than it started raining.
... about three years ago that it would be sooner than 20 years. ...
... sooner than it would otherwise occur. ...