I think the way of the students are changing with the change of the generation. Let me give an example of the way to say ''May I come in sir?''
In my grandfather's time, students used to stand straight at the door. Then they used to join their hands and speak politely, ''Excuse me sir, may I come in please?'' It changed with generation change. In my father's time, students did not join hands. They directly asked, ''Excuse me sir, may I come in please?'' In my time, we asked like this, ''May I come in sir?'' We removed the words ''Excuse me'' and ''Please'''
Now what does the present students do? You wonder they ask like this, ''Sir, I came inside, OK? and then the teacher finds the student inside the class before he permits. I think the next upcoming generation will ask more amazingly, '' Sir, will you carry me inside?''
In my grandfather's time, students used to stand straight at the door. Then they used to join their hands and speak politely, ''Excuse me sir, may I come in please?'' It changed with generation change. In my father's time, students did not join hands. They directly asked, ''Excuse me sir, may I come in please?'' In my time, we asked like this, ''May I come in sir?'' We removed the words ''Excuse me'' and ''Please'''
Now what does the present students do? You wonder they ask like this, ''Sir, I came inside, OK? and then the teacher finds the student inside the class before he permits. I think the next upcoming generation will ask more amazingly, '' Sir, will you carry me inside?''