I'll give you the example.. One day i sent a written report and it is being corrected. I just used the Simple present tense and it is corrected in Present Perfect tense because they thought that my sentence (SImple present) were wrong...and she argue with me and didn't accept my explaination because she's the boss. Now, no wonder if they are not improving because their brain is just focusing on one thing only.
My Ego now is in down and now i'm just encouraging my self to continue teaching. I wanna slap those thai with the basic knowledge in english which is arrogant and to tell that..... Hey! Try to master and EXPLOre your self in English!!!