Very good. Well done. That's nice. You made a very good job of that.
That's much (a lot) better. You've improved a little.
You can't say that, I'm afraid.
You still have some trouble with your spelling (sounds, etc.).
You need some more practice with ...
I wasn't very satisfied with that. You can do better than that.
That was rather disappointing.
Try harder. A bit more effort. I hope you do better next time.
The following comments are often used on written work: Excellent work. Very well done. Good stuff. Keep it up. Adequate.
Much better. Shows some improvement. Great improvement.
Satisfactory. Could do better. Too many careless slips. Careless.
Needs to show more effort. Not up to your usual standard.
Disappointing. See me about this.
