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"Si no" is a conjunction which is often translated as "unless", and "al tiempo" is a phrase which is often translated as "as". Learn more about the difference between "si no" and "al tiempo" below.
si no(
see
 
noh
)
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
conjunction
a. unless
No pueden pasar a la sala de conferencias si no son prensa.You cannot go into the conference room unless you are press.
a.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Si no cambia de actitud, va a tener muchos problemas en la vida.If he doesn't change his attitude, he's going to have a lot of trouble in life.
Si no fuera por Merche, nunca lo hubiéramos conseguido.If it weren't for Merche, we'd never have managed it.
b.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Si no nos hubieran ocultado información, podríamos haber hecho algo al respecto.Had they not hid information from us, we could have done something about it.
Hace tiempo que hubiera dejado mi puesto si no fuera por el profundo respeto que siento hacia el Presidente.I would have resigned my post long ago if it weren't for my profound respect for the president.
3. (or)
a. otherwise
Prueba a llamarlo por teléfono; si no, siempre puedes mandarle un email.Try calling him up; otherwise, you can always send him an email.
b. or else
Tendrás que ayudarme en la casa; si no, ya puedes despedirte de un celular nuevo estas Navidades.You'll have to help me with the house chores; or else, you can forget about getting a new cellphone for Christmas.
c. if not
Podemos ir esta tarde, o si no, mañana.We can go this afternoon, or if not, tomorrow.
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al tiempo(
ahl
 
tyehm
-
poh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. as
Al tiempo que almorzábamos, Ernesto estaba afuera tocando la guitarra.As we were having lunch, Ernesto was outside playing guitar.
b. while
Al tiempo que levantábamos la tienda de campaña, el guía prendía la fogata.While we were putting up the tent, the tour guide was lighting the bonfire.
a. to the time of
Ir a Chichén Itzá es como viajar al tiempo de los mayas.Going to Chichen Itza is like going on a journey to the time of the Mayas.
a. in time
Si no se logra implementar el cambio este año, no te preocupes. Al tiempo se logrará.If we can't get the change made this year, don't worry. In time, it will be done.
4. (at an ambient temperature)
Regionalism used in Mexico
(Mexico)
Regionalism used in Panama
(Panama)
a. at room temperature
Señor, ¿quiere la cerveza fría o al tiempo?Sir, do you want your beer cold or at room temperature?
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