Look at these adjectives:
Tom est beau, mais Henri et Bob sont très beaux.
Tom is handsome, but Henri and Bob are very handsome.
Yvette est belle, mais Leila et Belinda sont très belles.
Yvette is beautiful, but Leila and Belinda are very beautiful.
C'est un bel animal parmi de beaux animaux.
It's a beautiful animal among beautiful animals.
Note that to form the masculine plural, adjectives ending in -eau add -x, and vieux doesn't change.
As for the feminine plural, it is regular and simply takes an -s.
BUT
The masculine forms bel, nouvel and vieil (when in front of a vowel) become the regular masculine plural beaux, nouveaux and vieux.
Examples and resources
Ce vieil arbre est à côté de ces vieux arbres.
This old tree is next to these old trees.
Tom est beau, mais Henri et Bob sont très beaux.
Tom is handsome, but Henri and Bob are very handsome.
Mon nouvel ami s'entend bien avec mes nouveaux amis.
My new friend gets along with my new friends.
J'ai acheté de nouveaux bols et de nouvelles assiettes.
I bought some new bowls and some new plates.
"Plurals in French" by www.frenchspanishonline.com
C'est un bel animal parmi de beaux animaux.
It's a beautiful animal among beautiful animals.
Regarde ces vieux hommes et ces vieilles femmes.
Look at these old men and these old women.
Yvette est belle, mais Leila et Belinda sont très belles.
Yvette is beautiful, but Leila and Belinda are very beautiful.
Q&A
Laura
Kwiziq language super star
4/08/16
No, you're a bit mixed up.
Per the note at the bottom of the lesson: "The masculine forms bel, nouvel and vieil (when in front of a vowel) become the regular masculine plural beaux, nouveaux and vieux."
Feminine nouns always use their feminine forms; it's only singular masculine ones that have the special form.
Anne
Kwiziq community member
7 March 2017
3 replies
Pourquoi il n'est pas 'J'ai acheté des nouveaux bowls et des nouvelles assiettes?'
Anne
Kwiziq community member
7 March 2017
7/03/17
Sar
Kwiziq community member
8 March 2017
8/03/17
Aurélie
Kwiziq language super star
10 March 2017
10/03/17
Sar is right, and here is a link to our related lesson:
https://progress.lawlessfrench.com/revision/grammar/use-de-d-instead-of-des-in-front-of-adjectives-preceding-nouns-partitive-article
À bientôt !