Décembre est terminé.
To say "when I was finished" in French, you would say "quand j'avais fini."
You can say "J'ai terminé" in French to mean "I am finished".
To say "my favorite month is December" in French, you would say, "Mon mois préféré est décembre." This phrase captures your preference for the month of December.
Décembre
"finish" from English to French: fini to say " I am finished" in French it is: jai fini
Finished is 'fini' or 'terminé' in French.
"décembre"
"il a fini" or "elle a fini" if it is feminine.
Il est fini is more correct in the written French, but spoken French one can say C'est fini (not two n's)
Le 3 décembre
est tres manifique
In French, you would say "December fourth" as "le quatre décembre." In this case, "le" means "the," "quatre" means "four," and "décembre" means "December." French typically places the day before the month when stating dates.