l'on

[alan gould]

I'm aware that the letter "l" is added just because it sounds better.  However, I was just looking at some correspondence from a French university student who had a great command of French.  In the first sentence he didn't use the "l" whereas he did in the second.  I'm unable to see why it's used in one instance and not the other.  Did he make a mistake or do the French not stick to a rule about it?  Is it common not to use it?      

Les Français détestent qu'on leur donne des ordres! 

Arrogant veut dire que l'on se croit meilleur que les autres. 

merci d'avance

[Chantal Savignat]

Hello

I don't know a rule about that but ...

"l' " is used when there are 2 vowels side by side, or if there is the sound " CON"

but in the first sentence, after "on" there is a word beginning with "L" and the sound "que Lon Leur" is very weird. so I think I didn't write the "l".

"si l'on veut" is heard, and "si l'on la veut" is never heard. It's the same thing : a "l" after "on", and all sentences I know without "l'" before "on" are sentences with a "l" after "on".