French language Q&A Forum

The exercise says "When the main verb is in the passé composé, it is followed by the passé composé or plus que parfait" so why, in the following example, is the passé composé followed by the present tense.

Would "D'ailleurs" also be acceptable in the sentence  that starts, "De plus, je n'ai jamais été très patient..." ?

Pourquoi pas , "mon sac à dos"

Bonjour,

I noticed that in the video attached above, sometimes du is used rather than de with retard, for example - J'ai eu du retard / Le train a du retard.

While in this lesson, it mentions that "avoir (5 minutes) de retard". 

Is it when   "avoir ... de retard" uses with no specific time, the "de" can change to "du" ?  

Merci d'avance!

Tecla

I'm fully aware that student counts as an occupation, that the article comes in when there's an adjective, etc. What's confusing me is that is I've encountered people using the article with student (and only with student, no other occupations), with even some statements from native speakers online who say "X est un étudiant" feels more natural to them. I've also seen some other programs teach this as well; I'm well aware this is a different program, and am only stating how muddy waters seem on this! 

Is there a variation or shift occurring in the language (akin to the après que + subj. vs indic.)? Thanks!