Be nice. -> Soyez gentil. (sounds like: swah-yay zhah[n]-tee)
Of course you can change "soyez" to "sois" if speaking to someone you would call "tu". And don't forget to make "gentil" agree in gender and number with whomever you're addressing.
"Est-elle gentille?" is a translation of "Is she nice?".
To say very nice in French is:
Tres bien.
she is friendly - elle est gentille
That girl in french is "ce fille".
elle est de.... elle vient de.....
elle est polie
elle est de
Baby girl in French is: Bébé fille.
A lovely girl = une fille charmante.
fille intelligente
"une fille heureuse"
Bad is 'mauvaise' and girl is 'fille'.
My in French is 'Ma' if you were a girl.
Girl in french is fille
Française
Skinny girl is fille maigre in French.
gross girl
Baby girl in French is: Bébé fille.
"Good girl" in French is "brave fille" or "gentille fille".
un guide girl
Fille
Fille
fille
jolie