vs
QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Tú qué haces" is a form of "tú qué haces", a phrase which is often translated as "what you do". Learn more about the difference between "si" and "tú qué haces" below.
si(
see
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
tú qué haces(
too
keh
ah
-
sehs
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (informal) (habitual action; in statements; singular)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
a. what you do
Me estaba preguntando tú qué haces para mantenerte tan en forma.I was wandering what you do to be so fit.
2. (informal) (specific action; in statements; singular)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
a. what you're doing
No sé tú qué haces, pero yo estoy muy cansado y me voy a casa.I don't know what you're doing, but I'm very tired and am going home.
3. (informal) (habitual action; in questions; singular)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
a. what do you do
¿Tú qué haces cuando te sientes solo? - Llamo a un amigo.What do you do when you feel lonely? - I call a friend.
4. (informal) (specific action; in questions; singular)
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
a. what are you doing
Nosotros esta tarde vamos al cine. ¿Tú qué haces? ¿Quieres venirte?We're going to the movies this evening. What are you doing? Do you want to come along?
