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"Si" is a form of "si", a conjunction which is often translated as "if". "Estoy listo" is a phrase which is often translated as "I'm ready". Learn more about the difference between "estoy listo" and "si" below.
estoy listo(
ehs
-
toy
 
lees
-
toh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. I'm ready
¡Date prisa! El taxi está esperando en la puerta. - Estoy casi listo. Solo me falta ponerme los zapatos.Hurry up! The taxi is waiting outside. - I'm almost ready. I only need to put on my shoes.
2.
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
(colloquial)
(I'm in trouble)
a. I'm done for
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
(colloquial)
Pues como todos los días tenga que quedarme en la oficina trabajando hasta las 9 pm, estoy listo.Well, if I have to stay in the office working until 9 pm everyday, I'm done for!
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si(
see
)
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
conjunction
a. if
Si llueve mañana, cancelaremos el pícnic.If it rains tomorrow, we will cancel the picnic.
a. whether
Preguntó si me estaba divirtiendo.He asked whether I was enjoying myself.
b. if
Paco quiere saber si Laura también va a asistir.Paco wants to know if Laura is also going to attend.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. B
Primero lo oí en si menor.I first heard it played in B minor.
b. ti (solfége)
Practiquemos las escalas en orden inverso: do, si, la...Let's practice scales in reverse order: do, ti, la...
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