French language Q&A Forum

Bonjour Cécile,

I have observed that while writing passé composé,two types of sentences are possible-

1.Où êtes-vous allé en vacances?

2.Où êtes-vous allés en vacances?

Why has the extra "s" been added in second sentence although both are congucated with "vous" form?

Pls guide with this rule.

Thanks in advance

Also Madame Pls spare some time of yours to answer the below query of mine asked 3 days ago-

https://progress.lawlessfrench.com/questions/view/doubt-in-comparative-form-of-bien-1

Merci beaucoup Madame.

In the Charles Aznavour song it's "On a tort de penser, je sais bien, aux lendemains". I'm confused by the lendemains as it is in the present tense and referring to the future. Why that word? Is this how one would say "tomorrows" in a poetic sense, referring to the future in a boader sense vs. just "tomorrow" as in the day after tomorrow. Could you replace lendemains with something else and still have it make sense?