French language Q&A Forum

feelings at the time....why am I wrong?

I don't quite follow what the "But only" is meaning in the following text from the lesson:

You can also use any of those with ne ... plus (not anymore / not again):plus jamais / jamais plusbut ONLY plus rienplus personneplus nulle part. 

After more than a year of these lessons, I'd not learned "ce n'est pas" is how you say it is not "something" - for example - "Ce n'est pas une bonne taille."  Great discovery (I found it in a weekend writing lesson) !  Great course !

Why is it "J'aime le français" (with le) and "Je parle français" (without le)?