French language Q&A Forum

The very first example given of when to use "c'est" is:

"C'est une jolie robe."

This clearly refers to a specific dress.

But then we are told that the answer to "Tu aimes mon pull?"  should be "Oui, il est très beau."

Why is the rule for a specifc dress different than the rule for a specific sweater? Is it that "il/elle est" should be used when answering a question about a specific thing but that "c'est" can be used otherwise? 

Why does the last sentence use the impersonal construction, "Pourquoi se priver" instead of "nous priver"? 

Also, I translated "namely" as "en l'occurrence" but that wasn't one of the accepted answers (only "nommément" and "à savoir"). Is there a difference?

Leave my sister alone! 

Would Laissez-la! Carry a greater sense of gravity than Laisse-la! ?  

Est ce que la france va pouvoir gagner la coupe du monde sans Mbape?

Bonjour,

Can you explain how to determine which nouns are masculine and which are feminine?

Merci

Recently I got the question "C'est une ________ maison avec un beau jardin." which translates to:  This is a beautiful house with a beautiful garden. However, if this is truly translated it is C'est une belle maison avec un beau jardin. Please fix