Passe compose for a reflexive verb.

Nous nous sommes brossés. Or alternatively, for an all female group: Nous nous sommes brossées  

-- Chris (not a native speaker). 

Nous nous sommes brossés. Or alternatively, for an all female group: Nous nous sommes brossées  

-- Chris (not a native speaker). 

Hi Deborah.  This caught me out too.  But I think the Kwiz answer (full answer: "Nous nous sommes brossé les cheveux") is correct.  According to e.g. http://la-conjugaison.nouvelobs.com/regles/orthographe/l-accord-du-participe-passe-des-verbes-pronominaux-188.php there is no agreement of the past participle with the subject when a direct object follows.  They give the example of "Ils se sont lavé les mains".  This would seem to apply here also.

Perhaps there is a lesson on this that I haven't found.  If not, it would be nice to have one.

ps. I read a recent article where it said that French school kids spend 80 hours on average learning the rules for past participle agreement!

Hi Deborah, I had this same question. Did a little research online, and it turns out there is agreement with the past participle IF the reflexive pronoun is a direct object of the verb, as in "Nous nous sommes habillés." But when the reflexive pronoun is an indirect object, as in "Il se sont acheté un chien" there is no agreement. The answer is here in this link under #5: http://www.leaflanguages.org/french-grammar-reflexive-verbs-passe-compose-past-tense/

I had the same problem. An explanation of this should be added to the lesson above.