For example, if a gap is twenty feet wide, maillots de foot you refer to it as a ‘twenty foot gap’. You do not refer to it as a ‘twenty feet gap’. One has the impression (and it is borne out by Jespersen’s quotations) that in modem times foot is more frequent when it is followed by a number indicating inches but the word inch(es) is not itself used: thus five feet, or five feet eight inches, maillot foot pas cher but five foot eight. Note that you always use foot as the plural in front of another noun. You have any concerns. Comme Yann nous l’avait annoncé dans le 17e épisode de la saison de notre série Partout toujours, la fête devait être grandiose !