vs
QUICK ANSWER
"If" is a conjunction which is often translated as "si", and "unless" is a conjunction which is often translated as "a menos que". Learn more about the difference between "if" and "unless" below.
if(
ihf
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
4. (assumption)
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
If he enters the race—and that's a big if—he could receive many votes.Si entra a la carrera—y está por verse—podría recibir muchos votos.
The success of this project depends on a lot of ifs.El éxito de este proyecto depende de muchas suposiciones.
ifs
A plural noun indicates that there is more than one person, place, thing, or idea.
5. (conditions)
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Do your homework now, or you can't go to the movies. No ifs or buts!Haz la tarea ahora, o no puedes ir al cine. ¡Nada de peros!
Don't worry about the ifs, just enjoy the moment.Olvídate de las dudas y disfruta el momento.
unless(
uhn
-
lehs
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
1. (except)
a. a menos que
It is not possible to understand binary unless you have studied it.Es imposible entender binario a menos que lo hayas estudiado.
b. a no ser que
Unless you arrive early in the morning, the wait for breakfast can be about an hour.A no ser que llegues temprano por la mañana, la fila para el desayuno será aproximadamente de una hora.