this summer holiday, as in, during the summer holidays, is pendant les vacances d'été
if you had one vacation this summer, you would say my summer vacation. if you had like maybe a small, short one in may and then a long one out of state in July or something like that in the same year, you would say my summer vacations. so it basically depends on how many you had.
Summer holiday, we don't use the words vacation over here xxx
bonnes vacances d'été.
Ce sont les vacances d'été dans le sud de la France.
you give the answer
Vacaciones del verano.
Most french people either go to Canada or Israel on vacations in the summer.
Bon vacances
Sans vacances
On.
l'ete
暑假 (shu3 jia4)