Form, Used With, Spanish. Tú (informal second person singular), a single person who is the same age as you or younger, ¿Qué estás haciendo? or ¿Qué haces. How are you doing? - Fine, thanks.¿Cómo estás? - Bien, gracias. b. ¿Cómo te va ? (informal) (singular). How are you doing? I hope that everything is well with. -I've been practicing Spanish (He estado practicando mi español) It's also are you doing right now”; or “hey, long time no see, what have you been doing?”.