French language Q&A Forum

Are "afin de" and "pour" interchangeable?

Are the words 'LE rose' in the 1st sentence in the lesson, in the masculine gender because 'le rose' is used as a noun?  If the answer is yes, are all colours used as nouns masculine? 

As I understand the lesson, faire du/de la is used for habitual activities and joue à is used for ongoing or current activities. Is this wrong?

If not, how come "Elle joue à la natation." is wrong for "She goes swimming"?

The lesson has "Tu fais de la natation" as an example where it means the person does this habitually/in a club or something. So wouldn't "Elle fait de la natation" mean "She swims", "She's in a swimming club" or something, i.e. that she swims habitually?

"Sais-tu que Amy est mort?" - "Je ne le sais pas" OR "Je ne sais pas"?

According to the lesson saying that le replace ideas that are introduced by que, but "je ne sais pas" seem more commonly used

Don’t you just use le weekend? Do the french say “le fin de semaine”? 

j'ai mangé la moitié du chocolat j'ai mangé un demi-chocolat