Watching the French it is pretty obvious to see that if you hit a weak second serve then you get punished on the return.

To practice the return against a slower, shorter serve try this with your coach or a friend.

Server 1 only has a second serve, this is because the practice is based around the receiver, so we want any easier serve at this stage to practice against.

Receiver 2, must stand at least 1 meter inside the baseline(the green zone) to encourage an early ball that is attacked.

Receiver tries to hit to either point A or B.The point is not played out.

Try this against 20 serves from both sides, and see how accurate you are with the return - then you can change so the server now becomes the receiver.

If you did this for points, the receiver could score a point everytime the return lands in the A or B zone - and the second bounce is OUTSIDE the court - see how many points you can score off 40 serves.
Note: no faults on the serve, serve 40 ball in - this is a receivers practice.

Now get out there and try it!