"Bloc-notes" is singular. The plural would be "blocs-notes".
Singular - eauPlural - eaux
In French, the word for trousers is "pantalon," which is singular. However, when referring to trousers as a pair, it is often treated as plural, as in "des pantalons." So, while "pantalon" is singular, the term for trousers is commonly used in the plural form in everyday language.
Tu as is singular is French. The plural French form is Vous êtes.
The plural form of rendezvous is rendezvous, with the "s" pronounced (it is silent in the singular). In the French language from which the word originates, the plural form is the same as the singular. In the globalized pidgin "English" of the Internet, you are free to innovate.
Hors d'oeuvres is the English plural, hors d'oeuvre is the English singular. Hors d'œuvre is the French plural and the French singular.
It is plural and French.
"went" in French is "allé" for masculine singular, "allée" for feminine singular, "allés" for masculine plural, and "allées" for feminine plural.
Cinéma is the singular form of a masculine noun in French. The plural form is cinémas and may be translated as "films," "movie theaters" or "movies" in English. The pronunciation will be the same for the singular and the plural forms in French: "see-ney-ma."
singular: un manteau, plural: des manteaux
A cat is "un chat", masculine noun and singular if there is only one. Use the plural "des chats" when there are several of them.
"Your" formal: singular = votre plural = vos "Your" informal: masculine singular = ton feminine singular = ta plural = tes
the word emphasis is already singular because when in foreign plural it is emphases