Please don't address me (or indeed anybody else here) as 'Sir'. I appreciate that you are trying to be polite but we prefer to be addressed by our names or by nothing - which is acceptable in most English-speaking cultures. We are all members of this forum together. The fact that some of us happen to know a little more about English is just one of those things - it doesn'
Wow,what a level of modesty Mr.Fivejedjon.I would really like to learn this from you and I didnt know you had it so much in you and I had mistaken you so much,sorry.
In many cultures there is a prescribed mode for addressing people you don't know well enough to use their names (or don't know their names), for example, monsieur/madame/mademoiselle in French.
Ttanslating from their own language, many learners use sir/madam/miss when addressing people. This sounds a little strange in British En