French language Q&A Forum

What's the difference between the locations that can have preceding articles and those that can't?

très difficile, je ne comprends pas Jean-François

How could I say "I can go a day without you" (for example) using the same "se passer de"? I know we can say "Je peux me passer de toi pendant un jour" but could I eliminate the "pendant" and say something along the lines of "Je peux me passer de toi un jour" or "Je peux me passer un jour de toi" (but here you have to split them)?
If not, what would be the correct way to say it? Maybe "pendant" still has to be there in cases such as these?

The question in my lesson plan test was: "Il a vu Paul et Sam ? -Non, ________ ."

My answer, "Il n'a pas vu Paul et Sam." was marked wrong. And the correct answer given is: 

"Il n'a vu ni Paul ni Sam." "Has he seen Paul and Sam? -No, he hasn't seen Paul or Sam."

Wouldn't the more accurate English be: "No, he hasn't seen either Paul or Sam." ?

And, therefore "Il n'a pas vu Paul et Sam." would be the negation for "Il as vu Paul et Sam?"

Thank you for your explanation.

Is there a lesson on this apparent "être + [date]" phase? Can I say "je suis 2 décember" seemingly meaning "today is 2 December"? 

Cannot find anything on this topic on the Internet :( Thank you!

While the lesson is clear that the le passé composé is used here to use depuis for negation, I'm not sure how to ask the question that leads to this response: 

For example: When was the last time you your mother saw you? 

- Is it: Quelle était la dèrniere fois/Depuis quand ta mere t'a vu/te vois?

In either the case the answer would be in passé composé: for instance: Elle ne m'a pas vu depuis longtemps

Thanks!

The lesson indicateed Don't be afraid as "N'aie pas peur" but in test this was not accepted, only "N"ayez pas peur"