French language Q&A Forum

Hello!

In the lesson re: 

“Use il/elle est for statements and opinions related to specific things.”

Tu aimes mon pull?  Oui, il est très beau.

My question: do you ever use il/elle est in the plural, ie., ils/elles sont, in these instances?

How would you answer: Tu aimes mes pulls?  

Would it be: Oui, ils sont beaux. If not, can you explain why?

Thank you for your help! 

I noticed that for the two verbs that have to do with thoughts croire and savoir, the example phrases are negated. Are you able to use these verbs in positive sentences with passé composé or is it more appropriate to use the imparfait since it’s hard to know how long and how many times something was thought or believed?

the statement was just je....... rentre, as there was nothing(chez,dansetc) after rentre i used avoir but it was wrong, so why is there sometimes nothing after rentrer when used with etre?please

My dictionary gave me two choices: de plus and en plus.  Qui plus est was not even a choice.  I always seem to make the wrong choice.  Can someone explain the nuances of the translation of besides?