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"Si" is a form of "si", a conjunction which is often translated as "if". "Pero no puedo" is a phrase which is often translated as "but I can't". Learn more about the difference between "si" and "pero no puedo" below.
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 picnic.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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pero no puedo(
peh
-
roh
 
noh
 
pweh
-
doh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. but I can't
Me gustaría ir al cine, pero no puedo: tengo que estudiar.I'd like to go to the movies, but I can't; I have to study.
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