French language Q&A Forum

I teach Spanish and French.  In the preterit Spanish, SABER (their equivalent of savoir) carries the idea of someone finding out a fact or knowing it for a short time.  Is this true in French in the passé composé?

In other words, does "j'ai su son nom" carry the idea "I found out his name"?  Or even "I knew his name; but forgot it"?

why use "'on a dégusté " when you can use the imperfect or irregular version "on dégustait" without the a? because i find that way more confusing..

How to form interrogative?

Near the bottom of the lesson, the green box says ‘-CER and -GER verbs take ç and extra e in front of -a, but not in front of -è’ then is followed by an example with commença. I know that’s the correct spelling; so I don’t understand the ‘extra e’ bit. Please explain. Hang on, the penny is dropping...it’s an extra ‘e’ just after -ger and not -cer ? Perhaps this could be made clearer ?

I have a question why do we put an arrival before a sport such as je faire du tennis isn’t du means some or off what does mean if we put it before the sport?

When to use a, au and chez?