French language Q&A Forum

Jus

Les autres modes de transport utilisent "dans". Un wagon du métro et un wagon du train sont similaires. Cependant, le métro utilise "dans" et le train utilise "sur". Pourquoi?

Using le gerondif seems simpler that using a more complex construction using qui. For instance: 

People don't eat the produce coming from farmers using pesticides. (Les gens ne mangent pas les produits des agriculteurs utilisant des pesticides)

People don't eat the produce coming from farmers that use pesticides. (Les gens ne mangent pas les produits des agriculteurs qui utilisent des pesticides)

Is there a preference? 

"marcher a l'ecole" translates to "walks/is walking to school" so why was this marked wrong?

Nous nous intéressons au sport. Nous nous yintéressons 

How would you say this in first person singular?

Je m’intéresse au sport. Je m’y intéresse. Is this correct?

Why would saying "Je suis faim" be incorrect, but "J'ai faim" is correct? aren't these both correct to say "I am hungry"?

I used "la" rather than "y," but that was considered wrong.  How do I know when to use which?