
Samuel B. answered 08/27/19
Expert French Tutor--Professional Teacher
This is a stylistic choice subjective to each person and situation. I understand your observation, and have witnessed the same occurrence. It often applies to the final word in a sentence or a single word, in which a certain fluidity serves to amplify the effect of word. For example, when asking someone the location of someone or something, if the response given was: ‘perdu’, meaning ‘lost’, with a breathy, fluid extension of the ‘u’ sound, especially as a single word in response to such question, the trailing, almost whistling musicality of the sound serves to illustrate the uncertainty embodied by the word, illustrating to what degree the responder is uncertain. Generally speaking, the liaison of French pronunciation lends itself to a greater fluidity in sound than in English pronunciation.