Je fête / je célèbre mon vingtième anniversaire.
Tu célèbres ton vingtième anniversaire! and Vous fêtez votre vingtième anniversaire! are French equivalents of the English phrases "You are celebrating your twentieth anniversary!" and "You're celebrating your 20th anniversary!" Context makes clear whether one formal (case 2) or informal "you" (example 1) or two or more "you all" (instance 2) suits. The respective pronunciations will be "tyoo sey-leb to veh-tyeh-ma-nee-ver-ser" and "voo feh-tey vot veh-tyeh-ma-nee-ver-ser" in French.
the ninth anniversary is translated 'le neuvième anniversaire' in French.
"When's your birthday (anniversary)?" is an English equivalent of the French phrase C'est quand ton anniversaire? The question translates literally as "It's when, your anniversary (birthday)?" in English. The pronunciation will be "sey kaw to-na-nee-ver-ser" in French.
My name translated from English to french is Allen
The translation of 'a la tienne' from French to English is "to yours" or "to your health." It's a common toast used when raising glasses or celebrating.
Vendredi in French is "Friday" in English.
"Where?" in English is Où? in French.
"Out" in English is dehors in French.
Il in French is "he" in English.
Comment? in French is "How?" in English.
Quoi? in French is "What?" in English.
"Can I ...?" in English is Puis-je ...? in French.