French language Q&A Forum

What's the difference in french between saying I took my exams and I finished my exams?

Je M'appelle Jongsoo, Kim et Je viens de Seoul, Coree du Sud.

The above is quoted from the lesson.  I wonder if the "past participle" now serves as an adjective and that is the reason for the agreement, not the use of the verb être per se.  If that is the case it seems to me to be a much easier way to understand the construction of the passive voice.  

The explanation seems to focus on the verb être with the use of bold for être rather than the subject agreement, so it's easy to get confused.  (I tried to use "bold" here but it didn't work, so pls. see statement as it appears in the lesson.)

Going back to an earlier lesson which had this sentence in a quiz question:

Je vais être dévoré par les morts vivants

I went round and round trying to figure out what part of speech dévoré was.  I finally decided it was being used as an adjective (but I admit I am not !00% sure).   Hence my question above.

see that question below (not from me)

Conjugate verbs in the near future in French using aller + infinitive (Le Futur Proche)

See below.   The use of être plus the past participle should be discussed/explained...just say'n :))Non ! Je ________ dévoré par les morts vivants !No! I'm going to be devoured by the living dead!HINT: Conjugate être (to be) in Le Futur Proche

I thought the marking was a bit odd as I have underlined the words I got wrong and one was a verb avertir I used in lieu of prèvenir?

" ce pull ne va pas du tout. je le retourne tout de suite"

I thought retourner shouldnt be used in the context of returning something to the shop,,, I hear " Retourner never means to return (something) in the context of a shop for example. In French, we use rapporter (to bring back) or échanger [quelque chose]  can you say je le rentre? and or je le rapporte"? , 

Someone mentioned "I don't think retourner means to return in English like returning an item to a store (render quelque chose au magasin pour un remboursement) or putting an item away. is it the same for returning an item anywhere else than a shop like say a library? 

Another mentioned 99% of the time retourner isn't used to say you returned something in general. So is: "J'ai rendu les livres a la bibliotheque"  & j'ai rapporte les livres a la bibliotheque more preferred than j'ai retourne les livres a la bibliotheque. is it just the matter of choosing what sounds better in this case? even though you could possibly use retourner

& what is the difference between s'en retourner and retourner

Nous avons froid/ ils ont froid/ elle a froid????

I've been marked wrong for using - Il est dix-neuf heures et demie. - for 7.30 PM

But it's shown as acceptable in the lesson above.

Why?