could someone please advise on how to maintain a moving center or base on court while playing singles depending on which corner of the court you push your opponent to .
if you push your opponent right into the corner, then move your base so that you can cover a 'down the line' smash
If you hit to one side, stand further to that side (with one foot on the centre line). If you hit deep into the court, or away from the net (you lift, or push, or smash), then stay further back. If you hit to the front, and the shuttle is close to the net, stand closer to the net. If you hit the shuttle and your opponent is able to take the shuttle very high, stay further back (regardless of whether they take it at the front or back or in the middle). If your opponent takes the shuttle late, below net height, stand further forwards. The lower it is, the further forwards you can stand. Almost all shots and scenarios can be broken down into these conditions. Good luck
Your base is also wherever you are when your opponent hits the shuttle. It may not be your optimum base, but under the circumstances, wherever you are will have to do. At advance level, if you anticipated, or constructed a lift from your opponent, your base is usually a bit further back (say opponent approaching late to return a neutral drop, and needs to lift just off the floor), the adjusted base gives you time to prepare for your jump smash.
