"Perhaps you!!" is an English equivalent of the French phrase Peut-être vous! Context makes clear whether one "you" or two or more "you all" suits. The pronunciation will be "puh-tet voo" in northerly French and "puh-teh-truh voo" in southerly French.
Avez-vous...? in French is "Do you have... ?" in English.
Qui, vous? in French means "Who, you?" in English.
Vous allez! in French is "You go!" in English.
Allez-vous...? in French is "Are you going...?" in English.
Reviendrez-vous? in French means "Will you return?" in English.
Que faites-vous? in French is "What do you do?" in English.
Parlez-vous français? in French is "Do you speak French?" in English.
Où êtes-vous? in French means "Where are you?" in English.
Que vous êtes... in French means "That you are..." in English.
Vous venez in French is "Are you coming?" or "You're coming" in English.
"How are you?" in English is Comment allez-vous? in French.
will you be ...?