The French word a is the conjugated il/elle/on form of avoir - to have. For example:avoir - "to have"j'ai nous avonstu as vous avezil/elle/on a ils/elles ontIl a une voiture verte -- "He has a green...
you is not a french word. The English word 'you' may be translated either 'tu' or 'vous' in French. 'Tu' is familiar AND singular. 'Vous' is used in more formal relationships OR as the plural you.